vendor raymenu dependencies

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_amd64.h

@@ -0,0 +1,99 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Macros for transitioning from the host ABI to Go ABI0.
+//
+// These save the frame pointer, so in general, functions that use
+// these should have zero frame size to suppress the automatic frame
+// pointer, though it's harmless to not do this.
+
+#ifdef GOOS_windows
+
+// REGS_HOST_TO_ABI0_STACK is the stack bytes used by
+// PUSH_REGS_HOST_TO_ABI0.
+#define REGS_HOST_TO_ABI0_STACK (28*8 + 8)
+
+// PUSH_REGS_HOST_TO_ABI0 prepares for transitioning from
+// the host ABI to Go ABI0 code. It saves all registers that are
+// callee-save in the host ABI and caller-save in Go ABI0 and prepares
+// for entry to Go.
+//
+// Save DI SI BP BX R12 R13 R14 R15 X6-X15 registers and the DF flag.
+// Clear the DF flag for the Go ABI.
+// MXCSR matches the Go ABI, so we don't have to set that,
+// and Go doesn't modify it, so we don't have to save it.
+#define PUSH_REGS_HOST_TO_ABI0()	\
+	PUSHFQ			\
+	CLD			\
+	ADJSP	$(REGS_HOST_TO_ABI0_STACK - 8)	\
+	MOVQ	DI, (0*0)(SP)	\
+	MOVQ	SI, (1*8)(SP)	\
+	MOVQ	BP, (2*8)(SP)	\
+	MOVQ	BX, (3*8)(SP)	\
+	MOVQ	R12, (4*8)(SP)	\
+	MOVQ	R13, (5*8)(SP)	\
+	MOVQ	R14, (6*8)(SP)	\
+	MOVQ	R15, (7*8)(SP)	\
+	MOVUPS	X6, (8*8)(SP)	\
+	MOVUPS	X7, (10*8)(SP)	\
+	MOVUPS	X8, (12*8)(SP)	\
+	MOVUPS	X9, (14*8)(SP)	\
+	MOVUPS	X10, (16*8)(SP)	\
+	MOVUPS	X11, (18*8)(SP)	\
+	MOVUPS	X12, (20*8)(SP)	\
+	MOVUPS	X13, (22*8)(SP)	\
+	MOVUPS	X14, (24*8)(SP)	\
+	MOVUPS	X15, (26*8)(SP)
+
+#define POP_REGS_HOST_TO_ABI0()	\
+	MOVQ	(0*0)(SP), DI	\
+	MOVQ	(1*8)(SP), SI	\
+	MOVQ	(2*8)(SP), BP	\
+	MOVQ	(3*8)(SP), BX	\
+	MOVQ	(4*8)(SP), R12	\
+	MOVQ	(5*8)(SP), R13	\
+	MOVQ	(6*8)(SP), R14	\
+	MOVQ	(7*8)(SP), R15	\
+	MOVUPS	(8*8)(SP), X6	\
+	MOVUPS	(10*8)(SP), X7	\
+	MOVUPS	(12*8)(SP), X8	\
+	MOVUPS	(14*8)(SP), X9	\
+	MOVUPS	(16*8)(SP), X10	\
+	MOVUPS	(18*8)(SP), X11	\
+	MOVUPS	(20*8)(SP), X12	\
+	MOVUPS	(22*8)(SP), X13	\
+	MOVUPS	(24*8)(SP), X14	\
+	MOVUPS	(26*8)(SP), X15	\
+	ADJSP	$-(REGS_HOST_TO_ABI0_STACK - 8)	\
+	POPFQ
+
+#else
+// SysV ABI
+
+#define REGS_HOST_TO_ABI0_STACK (6*8)
+
+// SysV MXCSR matches the Go ABI, so we don't have to set that,
+// and Go doesn't modify it, so we don't have to save it.
+// Both SysV and Go require DF to be cleared, so that's already clear.
+// The SysV and Go frame pointer conventions are compatible.
+#define PUSH_REGS_HOST_TO_ABI0()	\
+	ADJSP	$(REGS_HOST_TO_ABI0_STACK)	\
+	MOVQ	BP, (5*8)(SP)	\
+	LEAQ	(5*8)(SP), BP	\
+	MOVQ	BX, (0*8)(SP)	\
+	MOVQ	R12, (1*8)(SP)	\
+	MOVQ	R13, (2*8)(SP)	\
+	MOVQ	R14, (3*8)(SP)	\
+	MOVQ	R15, (4*8)(SP)
+
+#define POP_REGS_HOST_TO_ABI0()	\
+	MOVQ	(0*8)(SP), BX	\
+	MOVQ	(1*8)(SP), R12	\
+	MOVQ	(2*8)(SP), R13	\
+	MOVQ	(3*8)(SP), R14	\
+	MOVQ	(4*8)(SP), R15	\
+	MOVQ	(5*8)(SP), BP	\
+	ADJSP	$-(REGS_HOST_TO_ABI0_STACK)
+
+#endif

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_arm64.h

@@ -0,0 +1,39 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Macros for transitioning from the host ABI to Go ABI0.
+//
+// These macros save and restore the callee-saved registers
+// from the stack, but they don't adjust stack pointer, so
+// the user should prepare stack space in advance.
+// SAVE_R19_TO_R28(offset) saves R19 ~ R28 to the stack space
+// of ((offset)+0*8)(RSP) ~ ((offset)+9*8)(RSP).
+//
+// SAVE_F8_TO_F15(offset) saves F8 ~ F15 to the stack space
+// of ((offset)+0*8)(RSP) ~ ((offset)+7*8)(RSP).
+//
+// R29 is not saved because Go will save and restore it.
+
+#define SAVE_R19_TO_R28(offset) \
+	STP	(R19, R20), ((offset)+0*8)(RSP) \
+	STP	(R21, R22), ((offset)+2*8)(RSP) \
+	STP	(R23, R24), ((offset)+4*8)(RSP) \
+	STP	(R25, R26), ((offset)+6*8)(RSP) \
+	STP	(R27, g), ((offset)+8*8)(RSP)
+#define RESTORE_R19_TO_R28(offset) \
+	LDP	((offset)+0*8)(RSP), (R19, R20) \
+	LDP	((offset)+2*8)(RSP), (R21, R22) \
+	LDP	((offset)+4*8)(RSP), (R23, R24) \
+	LDP	((offset)+6*8)(RSP), (R25, R26) \
+	LDP	((offset)+8*8)(RSP), (R27, g) /* R28 */
+#define SAVE_F8_TO_F15(offset) \
+	FSTPD	(F8, F9), ((offset)+0*8)(RSP) \
+	FSTPD	(F10, F11), ((offset)+2*8)(RSP) \
+	FSTPD	(F12, F13), ((offset)+4*8)(RSP) \
+	FSTPD	(F14, F15), ((offset)+6*8)(RSP)
+#define RESTORE_F8_TO_F15(offset) \
+	FLDPD	((offset)+0*8)(RSP), (F8, F9) \
+	FLDPD	((offset)+2*8)(RSP), (F10, F11) \
+	FLDPD	((offset)+4*8)(RSP), (F12, F13) \
+	FLDPD	((offset)+6*8)(RSP), (F14, F15)

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_loong64.h

@@ -0,0 +1,60 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Macros for transitioning from the host ABI to Go ABI0.
+//
+// These macros save and restore the callee-saved registers
+// from the stack, but they don't adjust stack pointer, so
+// the user should prepare stack space in advance.
+// SAVE_R22_TO_R31(offset) saves R22 ~ R31 to the stack space
+// of ((offset)+0*8)(R3) ~ ((offset)+9*8)(R3).
+//
+// SAVE_F24_TO_F31(offset) saves F24 ~ F31 to the stack space
+// of ((offset)+0*8)(R3) ~ ((offset)+7*8)(R3).
+//
+// Note: g is R22
+
+#define SAVE_R22_TO_R31(offset)	\
+	MOVV	g,   ((offset)+(0*8))(R3)	\
+	MOVV	R23, ((offset)+(1*8))(R3)	\
+	MOVV	R24, ((offset)+(2*8))(R3)	\
+	MOVV	R25, ((offset)+(3*8))(R3)	\
+	MOVV	R26, ((offset)+(4*8))(R3)	\
+	MOVV	R27, ((offset)+(5*8))(R3)	\
+	MOVV	R28, ((offset)+(6*8))(R3)	\
+	MOVV	R29, ((offset)+(7*8))(R3)	\
+	MOVV	R30, ((offset)+(8*8))(R3)	\
+	MOVV	R31, ((offset)+(9*8))(R3)
+
+#define SAVE_F24_TO_F31(offset)	\
+	MOVD	F24, ((offset)+(0*8))(R3)	\
+	MOVD	F25, ((offset)+(1*8))(R3)	\
+	MOVD	F26, ((offset)+(2*8))(R3)	\
+	MOVD	F27, ((offset)+(3*8))(R3)	\
+	MOVD	F28, ((offset)+(4*8))(R3)	\
+	MOVD	F29, ((offset)+(5*8))(R3)	\
+	MOVD	F30, ((offset)+(6*8))(R3)	\
+	MOVD	F31, ((offset)+(7*8))(R3)
+
+#define RESTORE_R22_TO_R31(offset)	\
+	MOVV	((offset)+(0*8))(R3),  g	\
+	MOVV	((offset)+(1*8))(R3), R23	\
+	MOVV	((offset)+(2*8))(R3), R24	\
+	MOVV	((offset)+(3*8))(R3), R25	\
+	MOVV	((offset)+(4*8))(R3), R26	\
+	MOVV	((offset)+(5*8))(R3), R27	\
+	MOVV	((offset)+(6*8))(R3), R28	\
+	MOVV	((offset)+(7*8))(R3), R29	\
+	MOVV	((offset)+(8*8))(R3), R30	\
+	MOVV	((offset)+(9*8))(R3), R31
+
+#define RESTORE_F24_TO_F31(offset)	\
+	MOVD	((offset)+(0*8))(R3), F24	\
+	MOVD	((offset)+(1*8))(R3), F25	\
+	MOVD	((offset)+(2*8))(R3), F26	\
+	MOVD	((offset)+(3*8))(R3), F27	\
+	MOVD	((offset)+(4*8))(R3), F28	\
+	MOVD	((offset)+(5*8))(R3), F29	\
+	MOVD	((offset)+(6*8))(R3), F30	\
+	MOVD	((offset)+(7*8))(R3), F31

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_ppc64x.h

@@ -0,0 +1,195 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Macros for transitioning from the host ABI to Go ABI
+//
+// On PPC64/ELFv2 targets, the following registers are callee
+// saved when called from C. They must be preserved before
+// calling into Go which does not preserve any of them.
+//
+//	R14-R31
+//	CR2-4
+//	VR20-31
+//	F14-F31
+//
+// xcoff(aix) and ELFv1 are similar, but may only require a
+// subset of these.
+//
+// These macros assume a 16 byte aligned stack pointer. This
+// is required by ELFv1, ELFv2, and AIX PPC64.
+
+#define SAVE_GPR_SIZE (18*8)
+#define SAVE_GPR(offset)               \
+	MOVD	R14, (offset+8*0)(R1)  \
+	MOVD	R15, (offset+8*1)(R1)  \
+	MOVD	R16, (offset+8*2)(R1)  \
+	MOVD	R17, (offset+8*3)(R1)  \
+	MOVD	R18, (offset+8*4)(R1)  \
+	MOVD	R19, (offset+8*5)(R1)  \
+	MOVD	R20, (offset+8*6)(R1)  \
+	MOVD	R21, (offset+8*7)(R1)  \
+	MOVD	R22, (offset+8*8)(R1)  \
+	MOVD	R23, (offset+8*9)(R1)  \
+	MOVD	R24, (offset+8*10)(R1) \
+	MOVD	R25, (offset+8*11)(R1) \
+	MOVD	R26, (offset+8*12)(R1) \
+	MOVD	R27, (offset+8*13)(R1) \
+	MOVD	R28, (offset+8*14)(R1) \
+	MOVD	R29, (offset+8*15)(R1) \
+	MOVD	g,   (offset+8*16)(R1) \
+	MOVD	R31, (offset+8*17)(R1)
+
+#define RESTORE_GPR(offset)            \
+	MOVD	(offset+8*0)(R1), R14  \
+	MOVD	(offset+8*1)(R1), R15  \
+	MOVD	(offset+8*2)(R1), R16  \
+	MOVD	(offset+8*3)(R1), R17  \
+	MOVD	(offset+8*4)(R1), R18  \
+	MOVD	(offset+8*5)(R1), R19  \
+	MOVD	(offset+8*6)(R1), R20  \
+	MOVD	(offset+8*7)(R1), R21  \
+	MOVD	(offset+8*8)(R1), R22  \
+	MOVD	(offset+8*9)(R1), R23  \
+	MOVD	(offset+8*10)(R1), R24 \
+	MOVD	(offset+8*11)(R1), R25 \
+	MOVD	(offset+8*12)(R1), R26 \
+	MOVD	(offset+8*13)(R1), R27 \
+	MOVD	(offset+8*14)(R1), R28 \
+	MOVD	(offset+8*15)(R1), R29 \
+	MOVD	(offset+8*16)(R1), g   \
+	MOVD	(offset+8*17)(R1), R31
+
+#define SAVE_FPR_SIZE (18*8)
+#define SAVE_FPR(offset)               \
+	FMOVD	F14, (offset+8*0)(R1)  \
+	FMOVD	F15, (offset+8*1)(R1)  \
+	FMOVD	F16, (offset+8*2)(R1)  \
+	FMOVD	F17, (offset+8*3)(R1)  \
+	FMOVD	F18, (offset+8*4)(R1)  \
+	FMOVD	F19, (offset+8*5)(R1)  \
+	FMOVD	F20, (offset+8*6)(R1)  \
+	FMOVD	F21, (offset+8*7)(R1)  \
+	FMOVD	F22, (offset+8*8)(R1)  \
+	FMOVD	F23, (offset+8*9)(R1)  \
+	FMOVD	F24, (offset+8*10)(R1) \
+	FMOVD	F25, (offset+8*11)(R1) \
+	FMOVD	F26, (offset+8*12)(R1) \
+	FMOVD	F27, (offset+8*13)(R1) \
+	FMOVD	F28, (offset+8*14)(R1) \
+	FMOVD	F29, (offset+8*15)(R1) \
+	FMOVD	F30, (offset+8*16)(R1) \
+	FMOVD	F31, (offset+8*17)(R1)
+
+#define RESTORE_FPR(offset)            \
+	FMOVD	(offset+8*0)(R1), F14  \
+	FMOVD	(offset+8*1)(R1), F15  \
+	FMOVD	(offset+8*2)(R1), F16  \
+	FMOVD	(offset+8*3)(R1), F17  \
+	FMOVD	(offset+8*4)(R1), F18  \
+	FMOVD	(offset+8*5)(R1), F19  \
+	FMOVD	(offset+8*6)(R1), F20  \
+	FMOVD	(offset+8*7)(R1), F21  \
+	FMOVD	(offset+8*8)(R1), F22  \
+	FMOVD	(offset+8*9)(R1), F23  \
+	FMOVD	(offset+8*10)(R1), F24 \
+	FMOVD	(offset+8*11)(R1), F25 \
+	FMOVD	(offset+8*12)(R1), F26 \
+	FMOVD	(offset+8*13)(R1), F27 \
+	FMOVD	(offset+8*14)(R1), F28 \
+	FMOVD	(offset+8*15)(R1), F29 \
+	FMOVD	(offset+8*16)(R1), F30 \
+	FMOVD	(offset+8*17)(R1), F31
+
+// Save and restore VR20-31 (aka VSR56-63). These
+// macros must point to a 16B aligned offset.
+#define SAVE_VR_SIZE (12*16)
+#define SAVE_VR(offset, rtmp)         \
+	MOVD	$(offset+16*0), rtmp  \
+	STVX	V20, (rtmp)(R1)       \
+	MOVD	$(offset+16*1), rtmp  \
+	STVX	V21, (rtmp)(R1)       \
+	MOVD	$(offset+16*2), rtmp  \
+	STVX	V22, (rtmp)(R1)       \
+	MOVD	$(offset+16*3), rtmp  \
+	STVX	V23, (rtmp)(R1)       \
+	MOVD	$(offset+16*4), rtmp  \
+	STVX	V24, (rtmp)(R1)       \
+	MOVD	$(offset+16*5), rtmp  \
+	STVX	V25, (rtmp)(R1)       \
+	MOVD	$(offset+16*6), rtmp  \
+	STVX	V26, (rtmp)(R1)       \
+	MOVD	$(offset+16*7), rtmp  \
+	STVX	V27, (rtmp)(R1)       \
+	MOVD	$(offset+16*8), rtmp  \
+	STVX	V28, (rtmp)(R1)       \
+	MOVD	$(offset+16*9), rtmp  \
+	STVX	V29, (rtmp)(R1)       \
+	MOVD	$(offset+16*10), rtmp \
+	STVX	V30, (rtmp)(R1)       \
+	MOVD	$(offset+16*11), rtmp \
+	STVX	V31, (rtmp)(R1)
+
+#define RESTORE_VR(offset, rtmp)      \
+	MOVD	$(offset+16*0), rtmp  \
+	LVX	(rtmp)(R1), V20       \
+	MOVD	$(offset+16*1), rtmp  \
+	LVX	(rtmp)(R1), V21       \
+	MOVD	$(offset+16*2), rtmp  \
+	LVX	(rtmp)(R1), V22       \
+	MOVD	$(offset+16*3), rtmp  \
+	LVX	(rtmp)(R1), V23       \
+	MOVD	$(offset+16*4), rtmp  \
+	LVX	(rtmp)(R1), V24       \
+	MOVD	$(offset+16*5), rtmp  \
+	LVX	(rtmp)(R1), V25       \
+	MOVD	$(offset+16*6), rtmp  \
+	LVX	(rtmp)(R1), V26       \
+	MOVD	$(offset+16*7), rtmp  \
+	LVX	(rtmp)(R1), V27       \
+	MOVD	$(offset+16*8), rtmp  \
+	LVX	(rtmp)(R1), V28       \
+	MOVD	$(offset+16*9), rtmp  \
+	LVX	(rtmp)(R1), V29       \
+	MOVD	$(offset+16*10), rtmp \
+	LVX	(rtmp)(R1), V30       \
+	MOVD	$(offset+16*11), rtmp \
+	LVX	(rtmp)(R1), V31
+
+// LR and CR are saved in the caller's frame. The callee must
+// make space for all other callee-save registers.
+#define SAVE_ALL_REG_SIZE (SAVE_GPR_SIZE+SAVE_FPR_SIZE+SAVE_VR_SIZE)
+
+// Stack a frame and save all callee-save registers following the
+// host OS's ABI. Fortunately, this is identical for AIX, ELFv1, and
+// ELFv2. All host ABIs require the stack pointer to maintain 16 byte
+// alignment, and save the callee-save registers in the same places.
+//
+// To restate, R1 is assumed to be aligned when this macro is used.
+// This assumes the caller's frame is compliant with the host ABI.
+// CR and LR are saved into the caller's frame per the host ABI.
+// R0 is initialized to $0 as expected by Go.
+#define STACK_AND_SAVE_HOST_TO_GO_ABI(extra)                       \
+	MOVD	LR, R0                                             \
+	MOVD	R0, 16(R1)                                         \
+	MOVW	CR, R0                                             \
+	MOVD	R0, 8(R1)                                          \
+	MOVDU	R1, -(extra)-FIXED_FRAME-SAVE_ALL_REG_SIZE(R1)     \
+	SAVE_GPR(extra+FIXED_FRAME)                                \
+	SAVE_FPR(extra+FIXED_FRAME+SAVE_GPR_SIZE)                  \
+	SAVE_VR(extra+FIXED_FRAME+SAVE_GPR_SIZE+SAVE_FPR_SIZE, R0) \
+	MOVD	$0, R0
+
+// This unstacks the frame, restoring all callee-save registers
+// as saved by STACK_AND_SAVE_HOST_TO_GO_ABI.
+//
+// R0 is not guaranteed to contain $0 after this macro.
+#define UNSTACK_AND_RESTORE_GO_TO_HOST_ABI(extra)                     \
+	RESTORE_GPR(extra+FIXED_FRAME)                                \
+	RESTORE_FPR(extra+FIXED_FRAME+SAVE_GPR_SIZE)                  \
+	RESTORE_VR(extra+FIXED_FRAME+SAVE_GPR_SIZE+SAVE_FPR_SIZE, R0) \
+	ADD 	$(extra+FIXED_FRAME+SAVE_ALL_REG_SIZE), R1            \
+	MOVD	16(R1), R0                                            \
+	MOVD	R0, LR                                                \
+	MOVD	8(R1), R0                                             \
+	MOVW	R0, CR

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_386.s

@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+TEXT crosscall2(SB), NOSPLIT, $28-16
+	MOVL BP, 24(SP)
+	MOVL BX, 20(SP)
+	MOVL SI, 16(SP)
+	MOVL DI, 12(SP)
+
+	MOVL ctxt+12(FP), AX
+	MOVL AX, 8(SP)
+	MOVL a+4(FP), AX
+	MOVL AX, 4(SP)
+	MOVL fn+0(FP), AX
+	MOVL AX, 0(SP)
+	CALL runtime·cgocallback(SB)
+
+	MOVL 12(SP), DI
+	MOVL 16(SP), SI
+	MOVL 20(SP), BX
+	MOVL 24(SP), BP
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_amd64.s

@@ -0,0 +1,39 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+#include "abi_amd64.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+// This signature is known to SWIG, so we can't change it.
+TEXT crosscall2(SB), NOSPLIT, $0-0
+	PUSH_REGS_HOST_TO_ABI0()
+
+	// Make room for arguments to cgocallback.
+	ADJSP $0x18
+
+#ifndef GOOS_windows
+	MOVQ DI, 0x0(SP) // fn
+	MOVQ SI, 0x8(SP) // arg
+
+	// Skip n in DX.
+	MOVQ CX, 0x10(SP) // ctxt
+
+#else
+	MOVQ CX, 0x0(SP) // fn
+	MOVQ DX, 0x8(SP) // arg
+
+	// Skip n in R8.
+	MOVQ R9, 0x10(SP) // ctxt
+
+#endif
+
+	CALL runtime·cgocallback(SB)
+
+	ADJSP $-0x18
+	POP_REGS_HOST_TO_ABI0()
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_arm.s

@@ -0,0 +1,52 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
+	SUB $(8*9), R13 // Reserve space for the floating point registers.
+
+	// The C arguments arrive in R0, R1, R2, and R3. We want to
+	// pass R0, R1, and R3 to Go, so we push those on the stack.
+	// Also, save C callee-save registers R4-R12.
+	MOVM.WP [R0, R1, R3, R4, R5, R6, R7, R8, R9, g, R11, R12], (R13)
+
+	// Finally, save the link register R14. This also puts the
+	// arguments we pushed for cgocallback where they need to be,
+	// starting at 4(R13).
+	MOVW.W R14, -4(R13)
+
+	// Save VFP callee-saved registers D8-D15 (same as S16-S31).
+	// Note: We always save these since we target hard-float ABI.
+	MOVD F8, (13*4+8*1)(R13)
+	MOVD F9, (13*4+8*2)(R13)
+	MOVD F10, (13*4+8*3)(R13)
+	MOVD F11, (13*4+8*4)(R13)
+	MOVD F12, (13*4+8*5)(R13)
+	MOVD F13, (13*4+8*6)(R13)
+	MOVD F14, (13*4+8*7)(R13)
+	MOVD F15, (13*4+8*8)(R13)
+
+	BL runtime·load_g(SB)
+
+	// We set up the arguments to cgocallback when saving registers above.
+	BL runtime·cgocallback(SB)
+
+	MOVD (13*4+8*1)(R13), F8
+	MOVD (13*4+8*2)(R13), F9
+	MOVD (13*4+8*3)(R13), F10
+	MOVD (13*4+8*4)(R13), F11
+	MOVD (13*4+8*5)(R13), F12
+	MOVD (13*4+8*6)(R13), F13
+	MOVD (13*4+8*7)(R13), F14
+	MOVD (13*4+8*8)(R13), F15
+
+	MOVW.P   4(R13), R14
+	MOVM.IAW (R13), [R0, R1, R3, R4, R5, R6, R7, R8, R9, g, R11, R12]
+	ADD      $(8*9), R13
+	MOVW     R14, R15

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_arm64.s

@@ -0,0 +1,36 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+#include "abi_arm64.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
+/*
+ * We still need to save all callee save register as before, and then
+ *  push 3 args for fn (R0, R1, R3), skipping R2.
+ * Also note that at procedure entry in gc world, 8(RSP) will be the
+ *  first arg.
+ */
+	SUB  $(8*24), RSP
+	STP  (R0, R1), (8*1)(RSP)
+	MOVD R3, (8*3)(RSP)
+
+	SAVE_R19_TO_R28(8*4)
+	SAVE_F8_TO_F15(8*14)
+	STP (R29, R30), (8*22)(RSP)
+
+	// Initialize Go ABI environment
+	BL runtime·load_g(SB)
+	BL runtime·cgocallback(SB)
+
+	RESTORE_R19_TO_R28(8*4)
+	RESTORE_F8_TO_F15(8*14)
+	LDP (8*22)(RSP), (R29, R30)
+
+	ADD $(8*24), RSP
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_loong64.s

@@ -0,0 +1,40 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+#include "abi_loong64.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
+/*
+ * We still need to save all callee save register as before, and then
+ * push 3 args for fn (R4, R5, R7), skipping R6.
+ * Also note that at procedure entry in gc world, 8(R29) will be the
+ *  first arg.
+ */
+
+	ADDV $(-23*8), R3
+	MOVV R4, (1*8)(R3) // fn unsafe.Pointer
+	MOVV R5, (2*8)(R3) // a unsafe.Pointer
+	MOVV R7, (3*8)(R3) // ctxt uintptr
+
+	SAVE_R22_TO_R31((4*8))
+	SAVE_F24_TO_F31((14*8))
+	MOVV R1, (22*8)(R3)
+
+	// Initialize Go ABI environment
+	JAL runtime·load_g(SB)
+
+	JAL runtime·cgocallback(SB)
+
+	RESTORE_R22_TO_R31((4*8))
+	RESTORE_F24_TO_F31((14*8))
+	MOVV (22*8)(R3), R1
+
+	ADDV $(23*8), R3
+
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_ppc64le.s

@@ -0,0 +1,82 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+#include "abi_ppc64x.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+//
+// This is a simplified version that only saves GPR and FPR registers,
+// not vector registers. This keeps the stack frame smaller to avoid
+// exceeding the nosplit stack limit.
+//
+// On PPC64LE ELFv2, callee-save registers are:
+//   R14-R31 (18 GPRs = 144 bytes)
+//   F14-F31 (18 FPRs = 144 bytes)
+//   CR2-CR4 (saved in CR field)
+//
+// Stack layout (must be 16-byte aligned):
+//   32 (FIXED_FRAME) + 24 (args) + 144 (GPR) + 144 (FPR) = 344
+//   Rounded to 352 for 16-byte alignment.
+
+#define FIXED_FRAME 32
+#define SAVE_SIZE    352
+#define GPR_OFFSET   (FIXED_FRAME+24)
+#define FPR_OFFSET   (GPR_OFFSET+SAVE_GPR_SIZE)
+
+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
+	// Save LR and CR in caller's frame per ELFv2 ABI
+	MOVD LR, R0
+	MOVD R0, 16(R1)
+	MOVW CR, R0
+	MOVD R0, 8(R1)
+
+	// Allocate our stack frame
+	MOVDU R1, -SAVE_SIZE(R1)
+
+	// Save TOC (R2) in case needed
+	MOVD R2, 24(R1)
+
+	// Save callee-save GPRs
+	SAVE_GPR(GPR_OFFSET)
+
+	// Save callee-save FPRs
+	SAVE_FPR(FPR_OFFSET)
+
+	// Initialize R0 to 0 as expected by Go
+	MOVD $0, R0
+
+	// Load the current g.
+	BL runtime·load_g(SB)
+
+	// Set up arguments for cgocallback
+	MOVD R3, FIXED_FRAME+0(R1) // fn unsafe.Pointer
+	MOVD R4, FIXED_FRAME+8(R1) // a unsafe.Pointer
+
+	// Skip R5 = n uint32
+	MOVD R6, FIXED_FRAME+16(R1)  // ctxt uintptr
+	BL   runtime·cgocallback(SB)
+
+	// Restore callee-save FPRs
+	RESTORE_FPR(FPR_OFFSET)
+
+	// Restore callee-save GPRs
+	RESTORE_GPR(GPR_OFFSET)
+
+	// Restore TOC
+	MOVD 24(R1), R2
+
+	// Deallocate stack frame
+	ADD $SAVE_SIZE, R1
+
+	// Restore LR and CR from caller's frame
+	MOVD 16(R1), R0
+	MOVD R0, LR
+	MOVD 8(R1), R0
+	MOVW R0, CR
+
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_riscv64.s

@@ -0,0 +1,78 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
+/*
+ * Push arguments for fn (X10, X11, X13), along with all callee-save
+ * registers. Note that at procedure entry the first argument is at
+ * 8(X2).
+ */
+	ADD  $(-8*29), X2
+	MOV  X10, (8*1)(X2)  // fn unsafe.Pointer
+	MOV  X11, (8*2)(X2)  // a unsafe.Pointer
+	MOV  X13, (8*3)(X2)  // ctxt uintptr
+	MOV  X8, (8*4)(X2)
+	MOV  X9, (8*5)(X2)
+	MOV  X18, (8*6)(X2)
+	MOV  X19, (8*7)(X2)
+	MOV  X20, (8*8)(X2)
+	MOV  X21, (8*9)(X2)
+	MOV  X22, (8*10)(X2)
+	MOV  X23, (8*11)(X2)
+	MOV  X24, (8*12)(X2)
+	MOV  X25, (8*13)(X2)
+	MOV  X26, (8*14)(X2)
+	MOV  g, (8*15)(X2)
+	MOV  X1, (8*16)(X2)
+	MOVD F8, (8*17)(X2)
+	MOVD F9, (8*18)(X2)
+	MOVD F18, (8*19)(X2)
+	MOVD F19, (8*20)(X2)
+	MOVD F20, (8*21)(X2)
+	MOVD F21, (8*22)(X2)
+	MOVD F22, (8*23)(X2)
+	MOVD F23, (8*24)(X2)
+	MOVD F24, (8*25)(X2)
+	MOVD F25, (8*26)(X2)
+	MOVD F26, (8*27)(X2)
+	MOVD F27, (8*28)(X2)
+
+	// Initialize Go ABI environment
+	CALL runtime·load_g(SB)
+	CALL runtime·cgocallback(SB)
+
+	MOV  (8*4)(X2), X8
+	MOV  (8*5)(X2), X9
+	MOV  (8*6)(X2), X18
+	MOV  (8*7)(X2), X19
+	MOV  (8*8)(X2), X20
+	MOV  (8*9)(X2), X21
+	MOV  (8*10)(X2), X22
+	MOV  (8*11)(X2), X23
+	MOV  (8*12)(X2), X24
+	MOV  (8*13)(X2), X25
+	MOV  (8*14)(X2), X26
+	MOV  (8*15)(X2), g
+	MOV  (8*16)(X2), X1
+	MOVD (8*17)(X2), F8
+	MOVD (8*18)(X2), F9
+	MOVD (8*19)(X2), F18
+	MOVD (8*20)(X2), F19
+	MOVD (8*21)(X2), F20
+	MOVD (8*22)(X2), F21
+	MOVD (8*23)(X2), F22
+	MOVD (8*24)(X2), F23
+	MOVD (8*25)(X2), F24
+	MOVD (8*26)(X2), F25
+	MOVD (8*27)(X2), F26
+	MOVD (8*28)(X2), F27
+	ADD  $(8*29), X2
+
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_s390x.s

@@ -0,0 +1,55 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
+	// Start with standard C stack frame layout and linkage.
+
+	// Save R6-R15 in the register save area of the calling function.
+	STMG R6, R15, 48(R15)
+
+	// Allocate 96 bytes on the stack.
+	MOVD $-96(R15), R15
+
+	// Save F8-F15 in our stack frame.
+	FMOVD F8, 32(R15)
+	FMOVD F9, 40(R15)
+	FMOVD F10, 48(R15)
+	FMOVD F11, 56(R15)
+	FMOVD F12, 64(R15)
+	FMOVD F13, 72(R15)
+	FMOVD F14, 80(R15)
+	FMOVD F15, 88(R15)
+
+	// Initialize Go ABI environment.
+	BL runtime·load_g(SB)
+
+	MOVD R2, 8(R15)  // fn unsafe.Pointer
+	MOVD R3, 16(R15) // a unsafe.Pointer
+
+	// Skip R4 = n uint32
+	MOVD R5, 24(R15)             // ctxt uintptr
+	BL   runtime·cgocallback(SB)
+
+	FMOVD 32(R15), F8
+	FMOVD 40(R15), F9
+	FMOVD 48(R15), F10
+	FMOVD 56(R15), F11
+	FMOVD 64(R15), F12
+	FMOVD 72(R15), F13
+	FMOVD 80(R15), F14
+	FMOVD 88(R15), F15
+
+	// De-allocate stack frame.
+	MOVD $96(R15), R15
+
+	// Restore R6-R15.
+	LMG 48(R15), R6, R15
+
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/callbacks.go

@@ -0,0 +1,93 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+package fakecgo
+
+import (
+	_ "unsafe"
+)
+
+// TODO: decide if we need _runtime_cgo_panic_internal
+
+//go:linkname x_cgo_init_trampoline x_cgo_init_trampoline
+//go:linkname _cgo_init _cgo_init
+var x_cgo_init_trampoline byte
+var _cgo_init = &x_cgo_init_trampoline
+
+// Creates a new system thread without updating any Go state.
+//
+// This method is invoked during shared library loading to create a new OS
+// thread to perform the runtime initialization. This method is similar to
+// _cgo_sys_thread_start except that it doesn't update any Go state.
+
+//go:linkname x_cgo_thread_start_trampoline x_cgo_thread_start_trampoline
+//go:linkname _cgo_thread_start _cgo_thread_start
+var x_cgo_thread_start_trampoline byte
+var _cgo_thread_start = &x_cgo_thread_start_trampoline
+
+// Notifies that the runtime has been initialized.
+//
+// We currently block at every CGO entry point (via _cgo_wait_runtime_init_done)
+// to ensure that the runtime has been initialized before the CGO call is
+// executed. This is necessary for shared libraries where we kickoff runtime
+// initialization in a separate thread and return without waiting for this
+// thread to complete the init.
+
+//go:linkname x_cgo_notify_runtime_init_done_trampoline x_cgo_notify_runtime_init_done_trampoline
+//go:linkname _cgo_notify_runtime_init_done _cgo_notify_runtime_init_done
+var x_cgo_notify_runtime_init_done_trampoline byte
+var _cgo_notify_runtime_init_done = &x_cgo_notify_runtime_init_done_trampoline
+
+// Indicates whether a dummy thread key has been created or not.
+//
+// When calling go exported function from C, we register a destructor
+// callback, for a dummy thread key, by using pthread_key_create.
+
+//go:linkname _cgo_pthread_key_created _cgo_pthread_key_created
+var x_cgo_pthread_key_created uintptr
+var _cgo_pthread_key_created = &x_cgo_pthread_key_created
+
+// Set the x_crosscall2_ptr C function pointer variable point to crosscall2.
+// It's for the runtime package to call at init time.
+func set_crosscall2() {
+	// nothing needs to be done here for fakecgo
+	// because it's possible to just call cgocallback directly
+}
+
+//go:linkname _set_crosscall2 runtime.set_crosscall2
+var _set_crosscall2 = set_crosscall2
+
+// Store the g into the thread-specific value.
+// So that pthread_key_destructor will dropm when the thread is exiting.
+
+//go:linkname x_cgo_bindm_trampoline x_cgo_bindm_trampoline
+//go:linkname _cgo_bindm _cgo_bindm
+var x_cgo_bindm_trampoline byte
+var _cgo_bindm = &x_cgo_bindm_trampoline
+
+// TODO: decide if we need x_cgo_set_context_function
+// TODO: decide if we need _cgo_yield
+
+var (
+	// In Go 1.20 the race detector was rewritten to pure Go
+	// on darwin. This means that when CGO_ENABLED=0 is set
+	// fakecgo is built with race detector code. This is not
+	// good since this code is pretending to be C. The go:norace
+	// pragma is not enough, since it only applies to the native
+	// ABIInternal function. The ABIO wrapper (which is necessary,
+	// since all references to text symbols from assembly will use it)
+	// does not inherit the go:norace pragma, so it will still be
+	// instrumented by the race detector.
+	//
+	// To circumvent this issue, using closure calls in the
+	// assembly, which forces the compiler to use the ABIInternal
+	// native implementation (which has go:norace) instead.
+	threadentry_call        = threadentry
+	x_cgo_init_call         = x_cgo_init
+	x_cgo_setenv_call       = x_cgo_setenv
+	x_cgo_unsetenv_call     = x_cgo_unsetenv
+	x_cgo_thread_start_call = x_cgo_thread_start
+)

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/doc.go

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+// Package fakecgo implements the Cgo runtime (runtime/cgo) entirely in Go.
+// This allows code that calls into C to function properly when CGO_ENABLED=0.
+//
+// # Goals
+//
+// fakecgo attempts to replicate the same naming structure as in the runtime.
+// For example, functions that have the prefix "gcc_*" are named "go_*".
+// This makes it easier to port other GOOSs and GOARCHs as well as to keep
+// it in sync with runtime/cgo.
+//
+// # Support
+//
+// Currently, fakecgo only supports macOS on amd64 & arm64. It also cannot
+// be used with -buildmode=c-archive because that requires special initialization
+// that fakecgo does not implement at the moment.
+//
+// # Usage
+//
+// Using fakecgo is easy just import _ "github.com/ebitengine/purego" and then
+// set the environment variable CGO_ENABLED=0.
+// The recommended usage for fakecgo is to prefer using runtime/cgo if possible
+// but if cross-compiling or fast build times are important fakecgo is available.
+// Purego will pick which ever Cgo runtime is available and prefer the one that
+// comes with Go (runtime/cgo).
+package fakecgo
+
+//go:generate go run gen.go

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/fakecgo.go

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2025 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+package fakecgo
+
+import _ "unsafe"
+
+// setg_trampoline calls setg with the G provided
+func setg_trampoline(setg uintptr, G uintptr)
+
+// call5 takes fn the C function and 5 arguments and calls the function with those arguments
+func call5(fn, a1, a2, a3, a4, a5 uintptr) uintptr

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/freebsd.go

@@ -0,0 +1,27 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build freebsd && !cgo
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+// Supply environ and __progname, because we don't
+// link against the standard FreeBSD crt0.o and the
+// libc dynamic library needs them.
+
+// Note: when building with cross-compiling or CGO_ENABLED=0, add
+// the following argument to `go` so that these symbols are defined by
+// making fakecgo the Cgo.
+//   -gcflags="github.com/ebitengine/purego/internal/fakecgo=-std"
+
+//go:linkname _environ environ
+//go:linkname _progname __progname
+
+//go:cgo_export_dynamic environ
+//go:cgo_export_dynamic __progname
+
+var _environ uintptr
+var _progname uintptr

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin.go

@@ -0,0 +1,88 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !cgo
+
+package fakecgo
+
+import "unsafe"
+
+//go:nosplit
+//go:norace
+func _cgo_sys_thread_start(ts *ThreadStart) {
+	var attr pthread_attr_t
+	var ign, oset sigset_t
+	var p pthread_t
+	var size size_t
+	var err int
+
+	sigfillset(&ign)
+	pthread_sigmask(SIG_SETMASK, &ign, &oset)
+
+	size = pthread_get_stacksize_np(pthread_self())
+	pthread_attr_init(&attr)
+	pthread_attr_setstacksize(&attr, size)
+	// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
+	ts.g.stackhi = uintptr(size)
+
+	err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts)
+
+	pthread_sigmask(SIG_SETMASK, &oset, nil)
+
+	if err != 0 {
+		print("fakecgo: pthread_create failed: ")
+		println(err)
+		abort()
+	}
+}
+
+// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function
+//
+//go:linkname x_threadentry_trampoline threadentry_trampoline
+var x_threadentry_trampoline byte
+var threadentry_trampolineABI0 = &x_threadentry_trampoline
+
+//go:nosplit
+//go:norace
+func threadentry(v unsafe.Pointer) unsafe.Pointer {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	// TODO: support ios
+	//#if TARGET_OS_IPHONE
+	//	darwin_arm_init_thread_exception_port();
+	//#endif
+	setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g)))
+
+	// faking funcs in go is a bit a... involved - but the following works :)
+	fn := uintptr(unsafe.Pointer(&ts.fn))
+	(*(*func())(unsafe.Pointer(&fn)))()
+
+	return nil
+}
+
+// here we will store a pointer to the provided setg func
+var setg_func uintptr
+
+// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c)
+// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us
+// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup
+// This function can't be go:systemstack since go is not in a state where the systemcheck would work.
+//
+//go:nosplit
+//go:norace
+func x_cgo_init(g *G, setg uintptr) {
+	var size size_t
+
+	setg_func = setg
+	size = pthread_get_stacksize_np(pthread_self())
+	g.stacklo = uintptr(unsafe.Add(unsafe.Pointer(&size), -size+4096))
+
+	//TODO: support ios
+	//#if TARGET_OS_IPHONE
+	//	darwin_arm_init_mach_exception_handler();
+	//	darwin_arm_init_thread_exception_port();
+	//	init_working_dir();
+	//#endif
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/go_freebsd.go

@@ -0,0 +1,100 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !cgo
+
+package fakecgo
+
+import "unsafe"
+
+//go:nosplit
+func _cgo_sys_thread_start(ts *ThreadStart) {
+	var attr pthread_attr_t
+	var ign, oset sigset_t
+	var p pthread_t
+	var size size_t
+	var err int
+
+	// fprintf(stderr, "runtime/cgo: _cgo_sys_thread_start: fn=%p, g=%p\n", ts->fn, ts->g); // debug
+	sigfillset(&ign)
+	pthread_sigmask(SIG_SETMASK, &ign, &oset)
+
+	pthread_attr_init(&attr)
+	pthread_attr_getstacksize(&attr, &size)
+	// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
+	ts.g.stackhi = uintptr(size)
+
+	err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts)
+
+	pthread_sigmask(SIG_SETMASK, &oset, nil)
+
+	if err != 0 {
+		print("fakecgo: pthread_create failed: ")
+		println(err)
+		abort()
+	}
+}
+
+// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function
+//
+//go:linkname x_threadentry_trampoline threadentry_trampoline
+var x_threadentry_trampoline byte
+var threadentry_trampolineABI0 = &x_threadentry_trampoline
+
+//go:nosplit
+func threadentry(v unsafe.Pointer) unsafe.Pointer {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g)))
+
+	// faking funcs in go is a bit a... involved - but the following works :)
+	fn := uintptr(unsafe.Pointer(&ts.fn))
+	(*(*func())(unsafe.Pointer(&fn)))()
+
+	return nil
+}
+
+// here we will store a pointer to the provided setg func
+var setg_func uintptr
+
+// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c)
+// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us
+// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup
+// This function can't be go:systemstack since go is not in a state where the systemcheck would work.
+//
+//go:nosplit
+func x_cgo_init(g *G, setg uintptr) {
+	var size size_t
+	var attr *pthread_attr_t
+
+	/* The memory sanitizer distributed with versions of clang
+	   before 3.8 has a bug: if you call mmap before malloc, mmap
+	   may return an address that is later overwritten by the msan
+	   library.  Avoid this problem by forcing a call to malloc
+	   here, before we ever call malloc.
+
+	   This is only required for the memory sanitizer, so it's
+	   unfortunate that we always run it.  It should be possible
+	   to remove this when we no longer care about versions of
+	   clang before 3.8.  The test for this is
+	   misc/cgo/testsanitizers.
+
+	   GCC works hard to eliminate a seemingly unnecessary call to
+	   malloc, so we actually use the memory we allocate.  */
+
+	setg_func = setg
+	attr = (*pthread_attr_t)(malloc(unsafe.Sizeof(*attr)))
+	if attr == nil {
+		println("fakecgo: malloc failed")
+		abort()
+	}
+	pthread_attr_init(attr)
+	pthread_attr_getstacksize(attr, &size)
+	// runtime/cgo uses __builtin_frame_address(0) instead of `uintptr(unsafe.Pointer(&size))`
+	// but this should be OK since we are taking the address of the first variable in this function.
+	g.stacklo = uintptr(unsafe.Pointer(&size)) - uintptr(size) + 4096
+	pthread_attr_destroy(attr)
+	free(unsafe.Pointer(attr))
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/go_libinit.go

@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+package fakecgo
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+var (
+	pthread_g pthread_key_t
+
+	runtime_init_cond = PTHREAD_COND_INITIALIZER
+	runtime_init_mu   = PTHREAD_MUTEX_INITIALIZER
+	runtime_init_done int
+)
+
+//go:nosplit
+//go:norace
+func x_cgo_notify_runtime_init_done() {
+	pthread_mutex_lock(&runtime_init_mu)
+	runtime_init_done = 1
+	pthread_cond_broadcast(&runtime_init_cond)
+	pthread_mutex_unlock(&runtime_init_mu)
+}
+
+// Store the g into a thread-specific value associated with the pthread key pthread_g.
+// And pthread_key_destructor will dropm when the thread is exiting.
+//
+//go:norace
+func x_cgo_bindm(g unsafe.Pointer) {
+	// We assume this will always succeed, otherwise, there might be extra M leaking,
+	// when a C thread exits after a cgo call.
+	// We only invoke this function once per thread in runtime.needAndBindM,
+	// and the next calls just reuse the bound m.
+	pthread_setspecific(pthread_g, g)
+}
+
+// _cgo_try_pthread_create retries pthread_create if it fails with
+// EAGAIN.
+//
+//go:nosplit
+//go:norace
+func _cgo_try_pthread_create(thread *pthread_t, attr *pthread_attr_t, pfn unsafe.Pointer, arg *ThreadStart) int {
+	var ts syscall.Timespec
+	// tries needs to be the same type as syscall.Timespec.Nsec
+	// but the fields are int32 on 32bit and int64 on 64bit.
+	// tries is assigned to syscall.Timespec.Nsec in order to match its type.
+	tries := ts.Nsec
+	var err int
+
+	for tries = 0; tries < 20; tries++ {
+		// inlined this call because it ran out of stack when inlining was disabled
+		err = int(call5(pthread_createABI0, uintptr(unsafe.Pointer(thread)), uintptr(unsafe.Pointer(attr)), uintptr(pfn), uintptr(unsafe.Pointer(arg)), 0))
+		if err == 0 {
+			// inlined this call because it ran out of stack when inlining was disabled
+			call5(pthread_detachABI0, uintptr(*thread), 0, 0, 0, 0)
+			return 0
+		}
+		if err != int(syscall.EAGAIN) {
+			return err
+		}
+		ts.Sec = 0
+		ts.Nsec = (tries + 1) * 1000 * 1000 // Milliseconds.
+		// inlined this call because it ran out of stack when inlining was disabled
+		call5(nanosleepABI0, uintptr(unsafe.Pointer(&ts)), 0, 0, 0, 0)
+	}
+	return int(syscall.EAGAIN)
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/go_linux.go

@@ -0,0 +1,100 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !cgo
+
+package fakecgo
+
+import "unsafe"
+
+//go:nosplit
+func _cgo_sys_thread_start(ts *ThreadStart) {
+	var attr pthread_attr_t
+	var ign, oset sigset_t
+	var p pthread_t
+	var size size_t
+	var err int
+
+	//fprintf(stderr, "runtime/cgo: _cgo_sys_thread_start: fn=%p, g=%p\n", ts->fn, ts->g); // debug
+	sigfillset(&ign)
+	pthread_sigmask(SIG_SETMASK, &ign, &oset)
+
+	pthread_attr_init(&attr)
+	pthread_attr_getstacksize(&attr, &size)
+	// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
+	ts.g.stackhi = uintptr(size)
+
+	err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts)
+
+	pthread_sigmask(SIG_SETMASK, &oset, nil)
+
+	if err != 0 {
+		print("fakecgo: pthread_create failed: ")
+		println(err)
+		abort()
+	}
+}
+
+// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function
+//
+//go:linkname x_threadentry_trampoline threadentry_trampoline
+var x_threadentry_trampoline byte
+var threadentry_trampolineABI0 = &x_threadentry_trampoline
+
+//go:nosplit
+func threadentry(v unsafe.Pointer) unsafe.Pointer {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g)))
+
+	// faking funcs in go is a bit a... involved - but the following works :)
+	fn := uintptr(unsafe.Pointer(&ts.fn))
+	(*(*func())(unsafe.Pointer(&fn)))()
+
+	return nil
+}
+
+// here we will store a pointer to the provided setg func
+var setg_func uintptr
+
+// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c)
+// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us
+// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup
+// This function can't be go:systemstack since go is not in a state where the systemcheck would work.
+//
+//go:nosplit
+func x_cgo_init(g *G, setg uintptr) {
+	var size size_t
+	var attr *pthread_attr_t
+
+	/* The memory sanitizer distributed with versions of clang
+	   before 3.8 has a bug: if you call mmap before malloc, mmap
+	   may return an address that is later overwritten by the msan
+	   library.  Avoid this problem by forcing a call to malloc
+	   here, before we ever call malloc.
+
+	   This is only required for the memory sanitizer, so it's
+	   unfortunate that we always run it.  It should be possible
+	   to remove this when we no longer care about versions of
+	   clang before 3.8.  The test for this is
+	   misc/cgo/testsanitizers.
+
+	   GCC works hard to eliminate a seemingly unnecessary call to
+	   malloc, so we actually use the memory we allocate.  */
+
+	setg_func = setg
+	attr = (*pthread_attr_t)(malloc(unsafe.Sizeof(*attr)))
+	if attr == nil {
+		println("fakecgo: malloc failed")
+		abort()
+	}
+	pthread_attr_init(attr)
+	pthread_attr_getstacksize(attr, &size)
+	// runtime/cgo uses __builtin_frame_address(0) instead of `uintptr(unsafe.Pointer(&size))`
+	// but this should be OK since we are taking the address of the first variable in this function.
+	g.stacklo = uintptr(unsafe.Pointer(&size)) - uintptr(size) + 4096
+	pthread_attr_destroy(attr)
+	free(unsafe.Pointer(attr))
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/go_netbsd.go

@@ -0,0 +1,106 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !cgo && (amd64 || arm64)
+
+package fakecgo
+
+import "unsafe"
+
+//go:nosplit
+func _cgo_sys_thread_start(ts *ThreadStart) {
+	var attr pthread_attr_t
+	var ign, oset sigset_t
+	var p pthread_t
+	var size size_t
+	var err int
+
+	// fprintf(stderr, "runtime/cgo: _cgo_sys_thread_start: fn=%p, g=%p\n", ts->fn, ts->g); // debug
+	sigfillset(&ign)
+	pthread_sigmask(SIG_SETMASK, &ign, &oset)
+
+	pthread_attr_init(&attr)
+	pthread_attr_getstacksize(&attr, &size)
+	// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
+	ts.g.stackhi = uintptr(size)
+
+	err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts)
+
+	pthread_sigmask(SIG_SETMASK, &oset, nil)
+
+	if err != 0 {
+		print("fakecgo: pthread_create failed: ")
+		println(err)
+		abort()
+	}
+}
+
+// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function
+//
+//go:linkname x_threadentry_trampoline threadentry_trampoline
+var x_threadentry_trampoline byte
+var threadentry_trampolineABI0 = &x_threadentry_trampoline
+
+//go:nosplit
+func threadentry(v unsafe.Pointer) unsafe.Pointer {
+	var ss stack_t
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	// On NetBSD, a new thread inherits the signal stack of the
+	// creating thread. That confuses minit, so we remove that
+	// signal stack here before calling the regular mstart. It's
+	// a bit baroque to remove a signal stack here only to add one
+	// in minit, but it's a simple change that keeps NetBSD
+	// working like other OS's. At this point all signals are
+	// blocked, so there is no race.
+	ss.ss_flags = SS_DISABLE
+	sigaltstack(&ss, nil)
+
+	setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g)))
+
+	// faking funcs in go is a bit a... involved - but the following works :)
+	fn := uintptr(unsafe.Pointer(&ts.fn))
+	(*(*func())(unsafe.Pointer(&fn)))()
+
+	return nil
+}
+
+// here we will store a pointer to the provided setg func
+var setg_func uintptr
+
+//go:nosplit
+func x_cgo_init(g *G, setg uintptr) {
+	var size size_t
+	var attr *pthread_attr_t
+
+	/* The memory sanitizer distributed with versions of clang
+	   before 3.8 has a bug: if you call mmap before malloc, mmap
+	   may return an address that is later overwritten by the msan
+	   library.  Avoid this problem by forcing a call to malloc
+	   here, before we ever call malloc.
+
+	   This is only required for the memory sanitizer, so it's
+	   unfortunate that we always run it.  It should be possible
+	   to remove this when we no longer care about versions of
+	   clang before 3.8.  The test for this is
+	   misc/cgo/testsanitizers.
+
+	   GCC works hard to eliminate a seemingly unnecessary call to
+	   malloc, so we actually use the memory we allocate.  */
+
+	setg_func = setg
+	attr = (*pthread_attr_t)(malloc(unsafe.Sizeof(*attr)))
+	if attr == nil {
+		println("fakecgo: malloc failed")
+		abort()
+	}
+	pthread_attr_init(attr)
+	pthread_attr_getstacksize(attr, &size)
+	// runtime/cgo uses __builtin_frame_address(0) instead of `uintptr(unsafe.Pointer(&size))`
+	// but this should be OK since we are taking the address of the first variable in this function.
+	g.stacklo = uintptr(unsafe.Pointer(&size)) - uintptr(size) + 4096
+	pthread_attr_destroy(attr)
+	free(unsafe.Pointer(attr))
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/go_setenv.go

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+package fakecgo
+
+//go:nosplit
+//go:norace
+func x_cgo_setenv(arg *[2]*byte) {
+	setenv(arg[0], arg[1], 1)
+}
+
+//go:nosplit
+//go:norace
+func x_cgo_unsetenv(arg *[1]*byte) {
+	unsetenv(arg[0])
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/go_util.go

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+package fakecgo
+
+import "unsafe"
+
+// _cgo_thread_start is split into three parts in cgo since only one part is system dependent (keep it here for easier handling)
+
+// _cgo_thread_start(ThreadStart *arg) (runtime/cgo/gcc_util.c)
+// This get's called instead of the go code for creating new threads
+// -> pthread_* stuff is used, so threads are setup correctly for C
+// If this is missing, TLS is only setup correctly on thread 1!
+// This function should be go:systemstack instead of go:nosplit (but that requires runtime)
+//
+//go:nosplit
+//go:norace
+func x_cgo_thread_start(arg *ThreadStart) {
+	var ts *ThreadStart
+	// Make our own copy that can persist after we return.
+	//	_cgo_tsan_acquire();
+	ts = (*ThreadStart)(malloc(unsafe.Sizeof(*ts)))
+	//	_cgo_tsan_release();
+	if ts == nil {
+		println("fakecgo: out of memory in thread_start")
+		abort()
+	}
+	// *ts = *arg would cause a writebarrier so copy using slices
+	const ptrSize = unsafe.Sizeof(uintptr(0))
+	s1 := unsafe.Slice((*uintptr)(unsafe.Pointer(ts)), unsafe.Sizeof(*ts)/ptrSize)
+	s2 := unsafe.Slice((*uintptr)(unsafe.Pointer(arg)), unsafe.Sizeof(*arg)/ptrSize)
+	for i := range s2 {
+		s1[i] = s2[i]
+	}
+	_cgo_sys_thread_start(ts) // OS-dependent half
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/iscgo.go

@@ -0,0 +1,19 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+// The runtime package contains an uninitialized definition
+// for runtime·iscgo. Override it to tell the runtime we're here.
+// There are various function pointers that should be set too,
+// but those depend on dynamic linker magic to get initialized
+// correctly, and sometimes they break. This variable is a
+// backup: it depends only on old C style static linking rules.
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+//go:linkname _iscgo runtime.iscgo
+var _iscgo bool = true

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo.go

@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+package fakecgo
+
+type (
+	size_t uintptr
+	// Sources:
+	// Darwin (32 bytes) - https://github.com/apple/darwin-xnu/blob/2ff845c2e033bd0ff64b5b6aa6063a1f8f65aa32/bsd/sys/_types.h#L74
+	// FreeBSD (32 bytes) - https://github.com/DoctorWkt/xv6-freebsd/blob/d2a294c2a984baed27676068b15ed9a29b06ab6f/include/signal.h#L98C9-L98C21
+	// Linux (128 bytes) - https://github.com/torvalds/linux/blob/ab75170520d4964f3acf8bb1f91d34cbc650688e/arch/x86/include/asm/signal.h#L25
+	sigset_t       [128]byte
+	pthread_attr_t [64]byte
+	pthread_t      int
+	pthread_key_t  uint64
+)
+
+// for pthread_sigmask:
+
+type sighow int32
+
+const (
+	SIG_BLOCK   sighow = 0
+	SIG_UNBLOCK sighow = 1
+	SIG_SETMASK sighow = 2
+)
+
+type G struct {
+	stacklo uintptr
+	stackhi uintptr
+}
+
+type ThreadStart struct {
+	g   *G
+	tls *uintptr
+	fn  uintptr
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_darwin.go

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+type (
+	pthread_mutex_t struct {
+		sig    int64
+		opaque [56]byte
+	}
+	pthread_cond_t struct {
+		sig    int64
+		opaque [40]byte
+	}
+)
+
+var (
+	PTHREAD_COND_INITIALIZER  = pthread_cond_t{sig: 0x3CB0B1BB}
+	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t{sig: 0x32AAABA7}
+)
+
+type stack_t struct {
+	/* not implemented */
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_freebsd.go

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+type (
+	pthread_cond_t  uintptr
+	pthread_mutex_t uintptr
+)
+
+var (
+	PTHREAD_COND_INITIALIZER  = pthread_cond_t(0)
+	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t(0)
+)
+
+type stack_t struct {
+	/* not implemented */
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_linux.go

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+type (
+	pthread_cond_t  [48]byte
+	pthread_mutex_t [48]byte
+)
+
+var (
+	PTHREAD_COND_INITIALIZER  = pthread_cond_t{}
+	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t{}
+)
+
+type stack_t struct {
+	/* not implemented */
+}

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_netbsd.go

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2025 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+type (
+	pthread_cond_t  uintptr
+	pthread_mutex_t uintptr
+)
+
+var (
+	PTHREAD_COND_INITIALIZER  = pthread_cond_t(0)
+	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t(0)
+)
+
+// Source: https://github.com/NetBSD/src/blob/613e27c65223fd2283b6ed679da1197e12f50e27/sys/compat/linux/arch/m68k/linux_signal.h#L133
+type stack_t struct {
+	ss_sp    uintptr
+	ss_flags int32
+	ss_size  uintptr
+}
+
+// Source: https://github.com/NetBSD/src/blob/613e27c65223fd2283b6ed679da1197e12f50e27/sys/sys/signal.h#L261
+const SS_DISABLE = 0x004

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/netbsd.go

@@ -0,0 +1,23 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build netbsd
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+// Supply environ and __progname, because we don't
+// link against the standard NetBSD crt0.o and the
+// libc dynamic library needs them.
+
+//go:linkname _environ environ
+//go:linkname _progname __progname
+//go:linkname ___ps_strings __ps_strings
+
+var (
+	_environ      uintptr
+	_progname     uintptr
+	___ps_strings uintptr
+)

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/setenv.go

@@ -0,0 +1,19 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+//go:linkname x_cgo_setenv_trampoline x_cgo_setenv_trampoline
+//go:linkname _cgo_setenv runtime._cgo_setenv
+var x_cgo_setenv_trampoline byte
+var _cgo_setenv = &x_cgo_setenv_trampoline
+
+//go:linkname x_cgo_unsetenv_trampoline x_cgo_unsetenv_trampoline
+//go:linkname _cgo_unsetenv runtime._cgo_unsetenv
+var x_cgo_unsetenv_trampoline byte
+var _cgo_unsetenv = &x_cgo_unsetenv_trampoline

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_386.s

@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2026 The Ebitengine Authors
+
+//go:build !cgo && (freebsd || linux)
+
+#include "textflag.h"
+#include "go_asm.h"
+
+// These trampolines map the gcc ABI to Go ABI0 and then call into the Go equivalent functions.
+// On i386, both GCC and Go use stack-based calling conventions.
+//
+// When C calls a function, the stack looks like:
+//   0(SP) = return address
+//   4(SP) = arg1
+//   8(SP) = arg2
+//   ...
+//
+// When we declare a Go function with frame size $N-0, Go's prologue
+// effectively does SUB $N, SP, so the C arguments shift up by N bytes:
+//   N+0(SP) = return address
+//   N+4(SP) = arg1
+//   N+8(SP) = arg2
+//
+// Go ABI0 on 386 expects arguments starting at 0(FP) which equals N+4(SP)
+// after the prologue (where N is the local frame size).
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT, $8-0
+	// C args at 12(SP) and 16(SP) after frame setup (8 bytes local + 4 bytes ret addr)
+	// Go function expects args at 0(SP) and 4(SP) in local frame
+	MOVL 12(SP), AX               // first C arg
+	MOVL 16(SP), BX               // second C arg
+	MOVL AX, 0(SP)                // Go arg 1
+	MOVL BX, 4(SP)                // Go arg 2
+	MOVL ·x_cgo_init_call(SB), CX
+	MOVL (CX), CX
+	CALL CX
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $4-0
+	// C args at 8(SP) after frame setup (4 bytes local + 4 bytes ret addr)
+	MOVL 8(SP), AX                        // first C arg
+	MOVL AX, 0(SP)                        // Go arg 1
+	MOVL ·x_cgo_thread_start_call(SB), CX
+	MOVL (CX), CX
+	CALL CX
+	RET
+
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $4-0
+	MOVL 8(SP), AX                  // first C arg
+	MOVL AX, 0(SP)                  // Go arg 1
+	MOVL ·x_cgo_setenv_call(SB), CX
+	MOVL (CX), CX
+	CALL CX
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $4-0
+	MOVL 8(SP), AX                    // first C arg
+	MOVL AX, 0(SP)                    // Go arg 1
+	MOVL ·x_cgo_unsetenv_call(SB), CX
+	MOVL (CX), CX
+	CALL CX
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0-0
+	CALL ·x_cgo_notify_runtime_init_done(SB)
+	RET
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_bindm(SB)
+	RET
+
+// func setg_trampoline(setg uintptr, g uintptr)
+// This is called from Go, so args are at normal FP positions
+TEXT ·setg_trampoline(SB), NOSPLIT, $4-8
+	MOVL g+4(FP), AX
+	MOVL setg+0(FP), BX
+
+	// setg expects g in 0(SP)
+	MOVL AX, 0(SP)
+	CALL BX
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT, $4-0
+	MOVL 8(SP), AX                 // first C arg
+	MOVL AX, 0(SP)                 // Go arg 1
+	MOVL ·threadentry_call(SB), CX
+	MOVL (CX), CX
+	CALL CX
+	RET
+
+TEXT ·call5(SB), NOSPLIT, $20-28
+	MOVL fn+0(FP), AX
+	MOVL a1+4(FP), BX
+	MOVL a2+8(FP), CX
+	MOVL a3+12(FP), DX
+	MOVL a4+16(FP), SI
+	MOVL a5+20(FP), DI
+
+	// Place arguments on local stack frame for C calling convention
+	MOVL BX, 0(SP)     // a1
+	MOVL CX, 4(SP)     // a2
+	MOVL DX, 8(SP)     // a3
+	MOVL SI, 12(SP)    // a4
+	MOVL DI, 16(SP)    // a5
+	CALL AX
+	MOVL AX, r1+24(FP)
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_amd64.s

@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || linux || freebsd)
+
+/*
+trampoline for emulating required C functions for cgo in go (see cgo.go)
+(we convert cdecl calling convention to go and vice-versa)
+
+C Calling convention cdecl used here (we only need integer args):
+1. arg: DI
+2. arg: SI
+3. arg: DX
+4. arg: CX
+5. arg: R8
+6. arg: R9
+We don't need floats with these functions -> AX=0
+return value will be in AX
+temporary register is R11
+*/
+#include "textflag.h"
+#include "go_asm.h"
+#include "abi_amd64.h"
+
+// these trampolines map the gcc ABI to Go ABI and then calls into the Go equivalent functions.
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT, $16
+	MOVQ DI, AX
+	MOVQ SI, BX
+	MOVQ ·x_cgo_init_call(SB), R11
+	MOVQ (R11), R11
+	CALL R11
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $8
+	MOVQ DI, AX
+	MOVQ ·x_cgo_thread_start_call(SB), R11
+	MOVQ (R11), R11
+	CALL R11
+	RET
+
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $8
+	MOVQ DI, AX
+	MOVQ ·x_cgo_setenv_call(SB), R11
+	MOVQ (R11), R11
+	CALL R11
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $8
+	MOVQ DI, AX
+	MOVQ ·x_cgo_unsetenv_call(SB), R11
+	MOVQ (R11), R11
+	CALL R11
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0
+	JMP ·x_cgo_notify_runtime_init_done(SB)
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0
+	JMP ·x_cgo_bindm(SB)
+
+// func setg_trampoline(setg uintptr, g uintptr)
+TEXT ·setg_trampoline(SB), NOSPLIT, $0-16
+	MOVQ G+8(FP), DI
+	MOVQ setg+0(FP), R11
+	XORL AX, AX
+	CALL R11
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT, $0
+	// See crosscall2.
+	PUSH_REGS_HOST_TO_ABI0()
+
+	// X15 is designated by Go as a fixed zero register.
+	// Calling directly into ABIInternal, ensure it is zero.
+	PXOR X15, X15
+
+	MOVQ DI, AX
+	MOVQ ·threadentry_call(SB), R11
+	MOVQ (R11), R11
+	CALL R11
+
+	POP_REGS_HOST_TO_ABI0()
+	RET
+
+TEXT ·call5(SB), NOSPLIT, $0-56
+	MOVQ fn+0(FP), R11
+	MOVQ a1+8(FP), DI
+	MOVQ a2+16(FP), SI
+	MOVQ a3+24(FP), DX
+	MOVQ a4+32(FP), CX
+	MOVQ a5+40(FP), R8
+
+	XORL AX, AX // no floats
+
+	PUSHQ BP       // save BP
+	MOVQ  SP, BP   // save SP inside BP bc BP is callee-saved
+	SUBQ  $16, SP  // allocate space for alignment
+	ANDQ  $-16, SP // align on 16 bytes for SSE
+
+	CALL R11
+
+	MOVQ BP, SP // get SP back
+	POPQ BP     // restore BP
+
+	MOVQ AX, ret+48(FP)
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_arm.s

@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2026 The Ebitengine Authors
+
+//go:build !cgo && (freebsd || linux)
+
+#include "textflag.h"
+#include "go_asm.h"
+
+// These trampolines map the gcc ABI to Go ABI0 and then call into the Go equivalent functions.
+// On ARM32, Go ABI0 uses stack-based calling convention.
+// Arguments are placed on the stack starting at 4(SP) after the prologue.
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT, $8-0
+	MOVW R0, 4(R13)
+	MOVW R1, 8(R13)
+	MOVW ·x_cgo_init_call(SB), R12
+	MOVW (R12), R12
+	CALL (R12)
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $8-0
+	MOVW R0, 4(R13)
+	MOVW ·x_cgo_thread_start_call(SB), R12
+	MOVW (R12), R12
+	CALL (R12)
+	RET
+
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $8-0
+	MOVW R0, 4(R13)
+	MOVW ·x_cgo_setenv_call(SB), R12
+	MOVW (R12), R12
+	CALL (R12)
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $8-0
+	MOVW R0, 4(R13)
+	MOVW ·x_cgo_unsetenv_call(SB), R12
+	MOVW (R12), R12
+	CALL (R12)
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0-0
+	CALL ·x_cgo_notify_runtime_init_done(SB)
+	RET
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_bindm(SB)
+	RET
+
+// func setg_trampoline(setg uintptr, g uintptr)
+TEXT ·setg_trampoline(SB), NOSPLIT, $0-8
+	MOVW G+4(FP), R0
+	MOVW setg+0(FP), R12
+	BL   (R12)
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT, $8-0
+	// See crosscall2.
+	MOVW R0, 4(R13)
+	MOVW ·threadentry_call(SB), R12
+	MOVW (R12), R12
+	CALL (R12)
+	RET
+
+TEXT ·call5(SB), NOSPLIT, $8-28
+	MOVW fn+0(FP), R12
+	MOVW a1+4(FP), R0
+	MOVW a2+8(FP), R1
+	MOVW a3+12(FP), R2
+	MOVW a4+16(FP), R3
+	MOVW a5+20(FP), R4
+
+	// Store 5th arg below SP (in local frame area)
+	MOVW R4, arg5-8(SP)
+
+	// Align SP to 8 bytes for call (required by ARM AAPCS)
+	SUB  $8, R13
+	CALL (R12)
+	ADD  $8, R13
+	MOVW R0, r1+24(FP)
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_arm64.s

@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux)
+
+#include "textflag.h"
+#include "go_asm.h"
+#include "abi_arm64.h"
+
+// These trampolines map the gcc ABI to Go ABIInternal and then calls into the Go equivalent functions.
+// Note that C arguments are passed in R0-R7, which matches Go ABIInternal for the first eight arguments.
+// R9 is used as a temporary register.
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT, $0-0
+	MOVD ·x_cgo_init_call(SB), R9
+	MOVD (R9), R9
+	CALL R9
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $0-0
+	MOVD ·x_cgo_thread_start_call(SB), R9
+	MOVD (R9), R9
+	CALL R9
+	RET
+
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $0-0
+	MOVD ·x_cgo_setenv_call(SB), R9
+	MOVD (R9), R9
+	CALL R9
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $0-0
+	MOVD ·x_cgo_unsetenv_call(SB), R9
+	MOVD (R9), R9
+	CALL R9
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0-0
+	CALL ·x_cgo_notify_runtime_init_done(SB)
+	RET
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_bindm(SB)
+	RET
+
+// func setg_trampoline(setg uintptr, g uintptr)
+TEXT ·setg_trampoline(SB), NOSPLIT, $0-16
+	MOVD G+8(FP), R0
+	MOVD setg+0(FP), R9
+	CALL R9
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT, $0-0
+	// See crosscall2.
+	SUB  $(8*24), RSP
+	STP  (R0, R1), (8*1)(RSP)
+	MOVD R3, (8*3)(RSP)
+
+	SAVE_R19_TO_R28(8*4)
+	SAVE_F8_TO_F15(8*14)
+	STP (R29, R30), (8*22)(RSP)
+
+	MOVD ·threadentry_call(SB), R9
+	MOVD (R9), R9
+	CALL R9
+	MOVD $0, R0                    // TODO: get the return value from threadentry
+
+	RESTORE_R19_TO_R28(8*4)
+	RESTORE_F8_TO_F15(8*14)
+	LDP (8*22)(RSP), (R29, R30)
+
+	ADD $(8*24), RSP
+	RET
+
+TEXT ·call5(SB), NOSPLIT, $0-0
+	MOVD fn+0(FP), R9
+	MOVD a1+8(FP), R0
+	MOVD a2+16(FP), R1
+	MOVD a3+24(FP), R2
+	MOVD a4+32(FP), R3
+	MOVD a5+40(FP), R4
+	CALL R9
+	MOVD R0, ret+48(FP)
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_loong64.s

@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2025 The Ebitengine Authors
+
+//go:build !cgo && linux
+
+#include "textflag.h"
+#include "go_asm.h"
+#include "abi_loong64.h"
+
+// these trampolines map the gcc ABI to Go ABI and then calls into the Go equivalent functions.
+// R23 is used as temporary register.
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT, $16
+	MOVV R4, 8(R3)
+	MOVV R5, 16(R3)
+	MOVV ·x_cgo_init_call(SB), R23
+	MOVV (R23), R23
+	CALL (R23)
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $8
+	MOVV R4, 8(R3)
+	MOVV ·x_cgo_thread_start_call(SB), R23
+	MOVV (R23), R23
+	CALL (R23)
+	RET
+
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $8
+	MOVV R4, 8(R3)
+	MOVV ·x_cgo_setenv_call(SB), R23
+	MOVV (R23), R23
+	CALL (R23)
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $8
+	MOVV R4, 8(R3)
+	MOVV ·x_cgo_unsetenv_call(SB), R23
+	MOVV (R23), R23
+	CALL (R23)
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_notify_runtime_init_done(SB)
+	RET
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_bindm(SB)
+	RET
+
+// func setg_trampoline(setg uintptr, g uintptr)
+TEXT ·setg_trampoline(SB), NOSPLIT, $0
+	MOVV G+8(FP), R4
+	MOVV setg+0(FP), R23
+	CALL (R23)
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT, $0
+	// See crosscall2.
+	ADDV $(-23*8), R3
+	MOVV R4, (1*8)(R3) // fn unsafe.Pointer
+	MOVV R5, (2*8)(R3) // a unsafe.Pointer
+	MOVV R7, (3*8)(R3) // ctxt uintptr
+
+	SAVE_R22_TO_R31((4*8))
+	SAVE_F24_TO_F31((14*8))
+	MOVV R1, (22*8)(R3)
+
+	MOVV ·threadentry_call(SB), R23
+	MOVV (R23), R23
+	CALL (R23)
+
+	RESTORE_R22_TO_R31((4*8))
+	RESTORE_F24_TO_F31((14*8))
+	MOVV (22*8)(R3), R1
+
+	ADDV $(23*8), R3
+	RET
+
+TEXT ·call5(SB), NOSPLIT, $0-0
+	MOVV fn+0(FP), R23
+	MOVV a1+8(FP), R4
+	MOVV a2+16(FP), R5
+	MOVV a3+24(FP), R6
+	MOVV a4+32(FP), R7
+	MOVV a5+40(FP), R8
+	CALL (R23)
+	MOVV R4, ret+48(FP)
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_ppc64le.s

@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2026 The Ebitengine Authors
+
+//go:build !cgo && linux
+
+#include "textflag.h"
+#include "go_asm.h"
+
+// These trampolines map the C ABI to Go ABI and call into the Go equivalent functions.
+//
+// PPC64LE ELFv2 ABI stack frame layout:
+//   0(R1)  = backchain (pointer to caller's frame)
+//   8(R1)  = CR save area
+//   16(R1) = LR save area
+//   24(R1) = reserved
+//   32(R1) = parameter save area (minimum 64 bytes for 8 args)
+//
+// Two patterns are used depending on call direction:
+//
+// C→Go trampolines: The C caller already provides a 32-byte linkage area.
+//   Save LR/CR into caller's frame at 16(R1)/8(R1) BEFORE allocating,
+//   then use MOVDU to allocate and set backchain atomically.
+//
+// Go→C trampolines: Go callers don't provide ELFv2 linkage area.
+//   Allocate frame first with MOVDU, then save LR/CR into OUR frame.
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT|NOFRAME, $0-0
+	MOVD LR, 16(R1)
+	MOVW CR, R0
+	MOVD R0, 8(R1)
+
+	MOVDU R1, -32(R1)
+
+	// R3, R4 already have the arguments
+	MOVD ·x_cgo_init_call(SB), R12
+	MOVD (R12), R12
+	MOVD R12, CTR
+	CALL CTR
+
+	ADD $32, R1
+
+	MOVD 16(R1), LR
+	MOVD 8(R1), R0
+	MOVW R0, CR
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT|NOFRAME, $0-0
+	MOVD LR, 16(R1)
+	MOVW CR, R0
+	MOVD R0, 8(R1)
+
+	MOVDU R1, -32(R1)
+
+	MOVD ·x_cgo_thread_start_call(SB), R12
+	MOVD (R12), R12
+	MOVD R12, CTR
+	CALL CTR
+
+	ADD $32, R1
+
+	MOVD 16(R1), LR
+	MOVD 8(R1), R0
+	MOVW R0, CR
+	RET
+
+// void (*_cgo_setenv)(char**)
+// C arg: R3 = pointer to env
+// This is C→Go: caller is C ABI.
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT|NOFRAME, $0-0
+	MOVD LR, 16(R1)
+	MOVW CR, R0
+	MOVD R0, 8(R1)
+
+	MOVDU R1, -32(R1)
+
+	MOVD ·x_cgo_setenv_call(SB), R12
+	MOVD (R12), R12
+	MOVD R12, CTR
+	CALL CTR
+
+	ADD $32, R1
+
+	MOVD 16(R1), LR
+	MOVD 8(R1), R0
+	MOVW R0, CR
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT|NOFRAME, $0-0
+	MOVD LR, 16(R1)
+	MOVW CR, R0
+	MOVD R0, 8(R1)
+
+	MOVDU R1, -32(R1)
+
+	MOVD ·x_cgo_unsetenv_call(SB), R12
+	MOVD (R12), R12
+	MOVD R12, CTR
+	CALL CTR
+
+	ADD $32, R1
+
+	MOVD 16(R1), LR
+	MOVD 8(R1), R0
+	MOVW R0, CR
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT|NOFRAME, $0-0
+	MOVD LR, 16(R1)
+	MOVW CR, R0
+	MOVD R0, 8(R1)
+
+	MOVDU R1, -32(R1)
+
+	CALL ·x_cgo_notify_runtime_init_done(SB)
+
+	ADD $32, R1
+
+	MOVD 16(R1), LR
+	MOVD 8(R1), R0
+	MOVW R0, CR
+	RET
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT|NOFRAME, $0-0
+	MOVD LR, 16(R1)
+	MOVW CR, R0
+	MOVD R0, 8(R1)
+
+	MOVDU R1, -32(R1)
+
+	CALL ·x_cgo_bindm(SB)
+
+	ADD $32, R1
+
+	MOVD 16(R1), LR
+	MOVD 8(R1), R0
+	MOVW R0, CR
+	RET
+
+TEXT ·setg_trampoline(SB), NOSPLIT|NOFRAME, $0-16
+	// Save LR, CR, and R31 to non-volatile registers (C ABI preserves R14-R31)
+	MOVD LR, R20
+	MOVW CR, R21
+	MOVD R31, R22 // save R31 because load_g clobbers it
+
+	// Load arguments from Go stack
+	MOVD 32(R1), R12 // setg function pointer
+	MOVD 40(R1), R3  // g pointer → first C arg
+
+	// Allocate ELFv2 frame for the C callee (32 bytes minimum)
+	MOVDU R1, -32(R1)
+
+	// Call setg_gcc which stores g to TLS
+	MOVD R12, CTR
+	CALL CTR
+
+	// setg_gcc stored g to TLS but restored old g in R30.
+	// Call load_g to reload g from TLS into R30.
+	// Note: load_g clobbers R31
+	CALL runtime·load_g(SB)
+
+	// Deallocate frame
+	ADD $32, R1
+
+	// Clear R0 before returning to Go code.
+	// Go uses R0 as a constant 0 for things like "std r0,X(r1)" to zero stack locations.
+	// C/assembly functions may leave garbage in R0.
+	XOR R0, R0, R0
+
+	// Restore LR, CR, and R31 from non-volatile registers
+	MOVD R22, R31 // restore R31
+	MOVD R20, LR
+	MOVW R21, CR
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT|NOFRAME, $0-0
+	MOVD LR, 16(R1)
+	MOVW CR, R0
+	MOVD R0, 8(R1)
+
+	MOVDU R1, -32(R1)
+
+	MOVD ·threadentry_call(SB), R12
+	MOVD (R12), R12
+	MOVD R12, CTR
+	CALL CTR
+
+	ADD $32, R1
+
+	MOVD 16(R1), LR
+	MOVD 8(R1), R0
+	MOVW R0, CR
+	RET
+
+TEXT ·call5(SB), NOSPLIT|NOFRAME, $0-56
+	MOVD LR, R20
+	MOVW CR, R21
+
+	// Load arguments from Go stack into C argument registers
+	// Go placed args at 32(R1), 40(R1), etc.
+	MOVD 32(R1), R12 // fn
+	MOVD 40(R1), R3  // a1 → first C arg
+	MOVD 48(R1), R4  // a2 → second C arg
+	MOVD 56(R1), R5  // a3 → third C arg
+	MOVD 64(R1), R6  // a4 → fourth C arg
+	MOVD 72(R1), R7  // a5 → fifth C arg
+
+	MOVDU R1, -32(R1)
+
+	MOVD R12, CTR
+	CALL CTR
+
+	// Store return value
+	// After MOVDU -32, original 80(R1) is now at 80+32=112(R1)
+	MOVD R3, (80+32)(R1)
+
+	// Deallocate frame
+	ADD $32, R1
+
+	// Clear R0 before returning to Go code.
+	// Go uses R0 as a constant 0 register for things like "std r0,X(r1)"
+	// to zero stack locations. C functions may leave garbage in R0.
+	XOR R0, R0, R0
+
+	// Restore LR/CR from non-volatile registers
+	MOVD R20, LR
+	MOVW R21, CR
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_riscv64.s

@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2026 The Ebitengine Authors
+
+//go:build !cgo && linux
+
+#include "textflag.h"
+#include "go_asm.h"
+
+// these trampolines map the gcc ABI to Go ABI and then calls into the Go equivalent functions.
+// X5 is used as temporary register.
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT, $16
+	MOV  X10, 8(SP)
+	MOV  X11, 16(SP)
+	MOV  ·x_cgo_init_call(SB), X5
+	MOV  (X5), X5
+	CALL X5
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $8
+	MOV  X10, 8(SP)
+	MOV  ·x_cgo_thread_start_call(SB), X5
+	MOV  (X5), X5
+	CALL X5
+	RET
+
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $8
+	MOV  X10, 8(SP)
+	MOV  ·x_cgo_setenv_call(SB), X5
+	MOV  (X5), X5
+	CALL X5
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $8
+	MOV  X10, 8(SP)
+	MOV  ·x_cgo_unsetenv_call(SB), X5
+	MOV  (X5), X5
+	CALL X5
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_notify_runtime_init_done(SB)
+	RET
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_bindm(SB)
+	RET
+
+// func setg_trampoline(setg uintptr, g uintptr)
+TEXT ·setg_trampoline(SB), NOSPLIT, $0
+	MOV  gp+8(FP), X10
+	MOV  setg+0(FP), X5
+	CALL X5
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT, $16
+	MOV  X10, 8(SP)
+	MOV  ·threadentry_call(SB), X5
+	MOV  (X5), X5
+	CALL X5
+	RET
+
+TEXT ·call5(SB), NOSPLIT, $0-48
+	MOV  fn+0(FP), X5
+	MOV  a1+8(FP), X10
+	MOV  a2+16(FP), X11
+	MOV  a3+24(FP), X12
+	MOV  a4+32(FP), X13
+	MOV  a5+40(FP), X14
+	CALL X5
+	MOV  X10, ret+48(FP)
+	RET

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/zsymbols.go

@@ -0,0 +1,165 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+package fakecgo
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+//go:nosplit
+//go:norace
+func malloc(size uintptr) unsafe.Pointer {
+	ret := call5(mallocABI0, uintptr(size), 0, 0, 0, 0)
+	// this indirection is to avoid go vet complaining about possible misuse of unsafe.Pointer
+	return *(*unsafe.Pointer)(unsafe.Pointer(&ret))
+}
+
+//go:nosplit
+//go:norace
+func free(ptr unsafe.Pointer) {
+	call5(freeABI0, uintptr(ptr), 0, 0, 0, 0)
+}
+
+//go:nosplit
+//go:norace
+func setenv(name *byte, value *byte, overwrite int32) int32 {
+	return int32(call5(setenvABI0, uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(value)), uintptr(overwrite), 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func unsetenv(name *byte) int32 {
+	return int32(call5(unsetenvABI0, uintptr(unsafe.Pointer(name)), 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func sigfillset(set *sigset_t) int32 {
+	return int32(call5(sigfillsetABI0, uintptr(unsafe.Pointer(set)), 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func nanosleep(ts *syscall.Timespec, rem *syscall.Timespec) int32 {
+	return int32(call5(nanosleepABI0, uintptr(unsafe.Pointer(ts)), uintptr(unsafe.Pointer(rem)), 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func abort() {
+	call5(abortABI0, 0, 0, 0, 0, 0)
+}
+
+//go:nosplit
+//go:norace
+func pthread_attr_init(attr *pthread_attr_t) int32 {
+	return int32(call5(pthread_attr_initABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_create(thread *pthread_t, attr *pthread_attr_t, start unsafe.Pointer, arg unsafe.Pointer) int32 {
+	return int32(call5(pthread_createABI0, uintptr(unsafe.Pointer(thread)), uintptr(unsafe.Pointer(attr)), uintptr(start), uintptr(arg), 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_detach(thread pthread_t) int32 {
+	return int32(call5(pthread_detachABI0, uintptr(thread), 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_sigmask(how sighow, ign *sigset_t, oset *sigset_t) int32 {
+	return int32(call5(pthread_sigmaskABI0, uintptr(how), uintptr(unsafe.Pointer(ign)), uintptr(unsafe.Pointer(oset)), 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_mutex_lock(mutex *pthread_mutex_t) int32 {
+	return int32(call5(pthread_mutex_lockABI0, uintptr(unsafe.Pointer(mutex)), 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_mutex_unlock(mutex *pthread_mutex_t) int32 {
+	return int32(call5(pthread_mutex_unlockABI0, uintptr(unsafe.Pointer(mutex)), 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_cond_broadcast(cond *pthread_cond_t) int32 {
+	return int32(call5(pthread_cond_broadcastABI0, uintptr(unsafe.Pointer(cond)), 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_setspecific(key pthread_key_t, value unsafe.Pointer) int32 {
+	return int32(call5(pthread_setspecificABI0, uintptr(key), uintptr(value), 0, 0, 0))
+}
+
+//go:linkname _malloc _malloc
+var _malloc uint8
+var mallocABI0 = uintptr(unsafe.Pointer(&_malloc))
+
+//go:linkname _free _free
+var _free uint8
+var freeABI0 = uintptr(unsafe.Pointer(&_free))
+
+//go:linkname _setenv _setenv
+var _setenv uint8
+var setenvABI0 = uintptr(unsafe.Pointer(&_setenv))
+
+//go:linkname _unsetenv _unsetenv
+var _unsetenv uint8
+var unsetenvABI0 = uintptr(unsafe.Pointer(&_unsetenv))
+
+//go:linkname _sigfillset _sigfillset
+var _sigfillset uint8
+var sigfillsetABI0 = uintptr(unsafe.Pointer(&_sigfillset))
+
+//go:linkname _nanosleep _nanosleep
+var _nanosleep uint8
+var nanosleepABI0 = uintptr(unsafe.Pointer(&_nanosleep))
+
+//go:linkname _abort _abort
+var _abort uint8
+var abortABI0 = uintptr(unsafe.Pointer(&_abort))
+
+//go:linkname _pthread_attr_init _pthread_attr_init
+var _pthread_attr_init uint8
+var pthread_attr_initABI0 = uintptr(unsafe.Pointer(&_pthread_attr_init))
+
+//go:linkname _pthread_create _pthread_create
+var _pthread_create uint8
+var pthread_createABI0 = uintptr(unsafe.Pointer(&_pthread_create))
+
+//go:linkname _pthread_detach _pthread_detach
+var _pthread_detach uint8
+var pthread_detachABI0 = uintptr(unsafe.Pointer(&_pthread_detach))
+
+//go:linkname _pthread_sigmask _pthread_sigmask
+var _pthread_sigmask uint8
+var pthread_sigmaskABI0 = uintptr(unsafe.Pointer(&_pthread_sigmask))
+
+//go:linkname _pthread_mutex_lock _pthread_mutex_lock
+var _pthread_mutex_lock uint8
+var pthread_mutex_lockABI0 = uintptr(unsafe.Pointer(&_pthread_mutex_lock))
+
+//go:linkname _pthread_mutex_unlock _pthread_mutex_unlock
+var _pthread_mutex_unlock uint8
+var pthread_mutex_unlockABI0 = uintptr(unsafe.Pointer(&_pthread_mutex_unlock))
+
+//go:linkname _pthread_cond_broadcast _pthread_cond_broadcast
+var _pthread_cond_broadcast uint8
+var pthread_cond_broadcastABI0 = uintptr(unsafe.Pointer(&_pthread_cond_broadcast))
+
+//go:linkname _pthread_setspecific _pthread_setspecific
+var _pthread_setspecific uint8
+var pthread_setspecificABI0 = uintptr(unsafe.Pointer(&_pthread_setspecific))

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/zsymbols_darwin.go

@@ -0,0 +1,59 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+import "unsafe"
+
+//go:cgo_import_dynamic purego_malloc malloc "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_free free "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_setenv setenv "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_unsetenv unsetenv "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_sigfillset sigfillset "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_nanosleep nanosleep "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_abort abort "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_create pthread_create "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_detach pthread_detach "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_self pthread_self "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_get_stacksize_np pthread_get_stacksize_np "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_attr_setstacksize pthread_attr_setstacksize "/usr/lib/libSystem.B.dylib"
+
+//go:nosplit
+//go:norace
+func pthread_self() pthread_t {
+	return pthread_t(call5(pthread_selfABI0, 0, 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_get_stacksize_np(thread pthread_t) size_t {
+	return size_t(call5(pthread_get_stacksize_npABI0, uintptr(thread), 0, 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_attr_setstacksize(attr *pthread_attr_t, size size_t) int32 {
+	return int32(call5(pthread_attr_setstacksizeABI0, uintptr(unsafe.Pointer(attr)), uintptr(size), 0, 0, 0))
+}
+
+//go:linkname _pthread_self _pthread_self
+var _pthread_self uint8
+var pthread_selfABI0 = uintptr(unsafe.Pointer(&_pthread_self))
+
+//go:linkname _pthread_get_stacksize_np _pthread_get_stacksize_np
+var _pthread_get_stacksize_np uint8
+var pthread_get_stacksize_npABI0 = uintptr(unsafe.Pointer(&_pthread_get_stacksize_np))
+
+//go:linkname _pthread_attr_setstacksize _pthread_attr_setstacksize
+var _pthread_attr_setstacksize uint8
+var pthread_attr_setstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_setstacksize))

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/zsymbols_freebsd.go

@@ -0,0 +1,48 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+import "unsafe"
+
+//go:cgo_import_dynamic purego_malloc malloc "libc.so.7"
+//go:cgo_import_dynamic purego_free free "libc.so.7"
+//go:cgo_import_dynamic purego_setenv setenv "libc.so.7"
+//go:cgo_import_dynamic purego_unsetenv unsetenv "libc.so.7"
+//go:cgo_import_dynamic purego_sigfillset sigfillset "libc.so.7"
+//go:cgo_import_dynamic purego_nanosleep nanosleep "libc.so.7"
+//go:cgo_import_dynamic purego_abort abort "libc.so.7"
+//go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_create pthread_create "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_detach pthread_detach "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "libpthread.so"
+
+//go:nosplit
+//go:norace
+func pthread_attr_getstacksize(attr *pthread_attr_t, stacksize *size_t) int32 {
+	return int32(call5(pthread_attr_getstacksizeABI0, uintptr(unsafe.Pointer(attr)), uintptr(unsafe.Pointer(stacksize)), 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_attr_destroy(attr *pthread_attr_t) int32 {
+	return int32(call5(pthread_attr_destroyABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0))
+}
+
+//go:linkname _pthread_attr_getstacksize _pthread_attr_getstacksize
+var _pthread_attr_getstacksize uint8
+var pthread_attr_getstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_getstacksize))
+
+//go:linkname _pthread_attr_destroy _pthread_attr_destroy
+var _pthread_attr_destroy uint8
+var pthread_attr_destroyABI0 = uintptr(unsafe.Pointer(&_pthread_attr_destroy))

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/zsymbols_linux.go

@@ -0,0 +1,48 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+import "unsafe"
+
+//go:cgo_import_dynamic purego_malloc malloc "libc.so.6"
+//go:cgo_import_dynamic purego_free free "libc.so.6"
+//go:cgo_import_dynamic purego_setenv setenv "libc.so.6"
+//go:cgo_import_dynamic purego_unsetenv unsetenv "libc.so.6"
+//go:cgo_import_dynamic purego_sigfillset sigfillset "libc.so.6"
+//go:cgo_import_dynamic purego_nanosleep nanosleep "libc.so.6"
+//go:cgo_import_dynamic purego_abort abort "libc.so.6"
+//go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_create pthread_create "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_detach pthread_detach "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "libpthread.so.0"
+
+//go:nosplit
+//go:norace
+func pthread_attr_getstacksize(attr *pthread_attr_t, stacksize *size_t) int32 {
+	return int32(call5(pthread_attr_getstacksizeABI0, uintptr(unsafe.Pointer(attr)), uintptr(unsafe.Pointer(stacksize)), 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_attr_destroy(attr *pthread_attr_t) int32 {
+	return int32(call5(pthread_attr_destroyABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0))
+}
+
+//go:linkname _pthread_attr_getstacksize _pthread_attr_getstacksize
+var _pthread_attr_getstacksize uint8
+var pthread_attr_getstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_getstacksize))
+
+//go:linkname _pthread_attr_destroy _pthread_attr_destroy
+var _pthread_attr_destroy uint8
+var pthread_attr_destroyABI0 = uintptr(unsafe.Pointer(&_pthread_attr_destroy))

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/zsymbols_netbsd.go

@@ -0,0 +1,59 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+import "unsafe"
+
+//go:cgo_import_dynamic purego_malloc malloc "libc.so"
+//go:cgo_import_dynamic purego_free free "libc.so"
+//go:cgo_import_dynamic purego_setenv setenv "libc.so"
+//go:cgo_import_dynamic purego_unsetenv unsetenv "libc.so"
+//go:cgo_import_dynamic purego_sigfillset sigfillset "libc.so"
+//go:cgo_import_dynamic purego_nanosleep nanosleep "libc.so"
+//go:cgo_import_dynamic purego_abort abort "libc.so"
+//go:cgo_import_dynamic purego_sigaltstack sigaltstack "libc.so"
+//go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_create pthread_create "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_detach pthread_detach "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "libpthread.so"
+
+//go:nosplit
+//go:norace
+func sigaltstack(ss *stack_t, old_ss *stack_t) int32 {
+	return int32(call5(sigaltstackABI0, uintptr(unsafe.Pointer(ss)), uintptr(unsafe.Pointer(old_ss)), 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_attr_getstacksize(attr *pthread_attr_t, stacksize *size_t) int32 {
+	return int32(call5(pthread_attr_getstacksizeABI0, uintptr(unsafe.Pointer(attr)), uintptr(unsafe.Pointer(stacksize)), 0, 0, 0))
+}
+
+//go:nosplit
+//go:norace
+func pthread_attr_destroy(attr *pthread_attr_t) int32 {
+	return int32(call5(pthread_attr_destroyABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0))
+}
+
+//go:linkname _sigaltstack _sigaltstack
+var _sigaltstack uint8
+var sigaltstackABI0 = uintptr(unsafe.Pointer(&_sigaltstack))
+
+//go:linkname _pthread_attr_getstacksize _pthread_attr_getstacksize
+var _pthread_attr_getstacksize uint8
+var pthread_attr_getstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_getstacksize))
+
+//go:linkname _pthread_attr_destroy _pthread_attr_destroy
+var _pthread_attr_destroy uint8
+var pthread_attr_destroyABI0 = uintptr(unsafe.Pointer(&_pthread_attr_destroy))

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/ztrampolines_darwin.s

@@ -0,0 +1,19 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+#include "textflag.h"
+
+// these stubs are here because it is not possible to go:linkname directly the C functions
+
+TEXT _pthread_self(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_self(SB)
+
+TEXT _pthread_get_stacksize_np(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_get_stacksize_np(SB)
+
+TEXT _pthread_attr_setstacksize(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_setstacksize(SB)

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/ztrampolines_freebsd.s

@@ -0,0 +1,16 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+#include "textflag.h"
+
+// these stubs are here because it is not possible to go:linkname directly the C functions
+
+TEXT _pthread_attr_getstacksize(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_getstacksize(SB)
+
+TEXT _pthread_attr_destroy(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_destroy(SB)

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/ztrampolines_linux.s

@@ -0,0 +1,16 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+#include "textflag.h"
+
+// these stubs are here because it is not possible to go:linkname directly the C functions
+
+TEXT _pthread_attr_getstacksize(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_getstacksize(SB)
+
+TEXT _pthread_attr_destroy(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_destroy(SB)

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/ztrampolines_netbsd.s

@@ -0,0 +1,19 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+#include "textflag.h"
+
+// these stubs are here because it is not possible to go:linkname directly the C functions
+
+TEXT _sigaltstack(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_sigaltstack(SB)
+
+TEXT _pthread_attr_getstacksize(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_getstacksize(SB)
+
+TEXT _pthread_attr_destroy(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_destroy(SB)

raymenu/vendor/github.com/ebitengine/purego/internal/fakecgo/ztrampolines_stubs.s

@@ -0,0 +1,55 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
+
+#include "textflag.h"
+
+// these stubs are here because it is not possible to go:linkname directly the C functions
+
+TEXT _malloc(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_malloc(SB)
+
+TEXT _free(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_free(SB)
+
+TEXT _setenv(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_setenv(SB)
+
+TEXT _unsetenv(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_unsetenv(SB)
+
+TEXT _sigfillset(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_sigfillset(SB)
+
+TEXT _nanosleep(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_nanosleep(SB)
+
+TEXT _abort(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_abort(SB)
+
+TEXT _pthread_attr_init(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_init(SB)
+
+TEXT _pthread_create(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_create(SB)
+
+TEXT _pthread_detach(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_detach(SB)
+
+TEXT _pthread_sigmask(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_sigmask(SB)
+
+TEXT _pthread_mutex_lock(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_mutex_lock(SB)
+
+TEXT _pthread_mutex_unlock(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_mutex_unlock(SB)
+
+TEXT _pthread_cond_broadcast(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_cond_broadcast(SB)
+
+TEXT _pthread_setspecific(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_setspecific(SB)