vendor raymenu dependencies

2026-05-10 01:49:00 +02:00
parent a2f05963bb
commit 35c229182b
346 changed files with 391647 additions and 1 deletions
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2026 The Ebitengine Authors
+
+//go:build linux
+
+#include "textflag.h"
+#include "go_asm.h"
+#include "funcdata.h"
+
+// Stack usage:
+//  0(SP)  - 56(SP):  stack args a9-a15 (7 * 8 bytes = 56)
+// 56(SP)  - 64(SP):  saved RA (x1)
+// 64(SP)  - 72(SP):  saved X9 (s1)
+// 72(SP)  - 80(SP):  saved X18 (s2)
+// 80(SP)  - 88(SP):  saved args pointer (original X10)
+// 88(SP)  - 96(SP):  padding
+#define STACK_SIZE 96
+#define SAVE_RA    56
+#define SAVE_X9    64
+#define SAVE_X18   72
+#define SAVE_ARGP  80
+
+GLOBL ·syscall15XABI0(SB), NOPTR|RODATA, $8
+DATA ·syscall15XABI0(SB)/8, $syscall15X(SB)
+
+TEXT syscall15X(SB), NOSPLIT, $0
+	// Allocate stack frame (keeps 16-byte alignment)
+	SUB $STACK_SIZE, SP
+
+	// Save callee-saved regs we clobber + return address
+	MOV X1, SAVE_RA(SP)
+	MOV X9, SAVE_X9(SP)
+	MOV X18, SAVE_X18(SP)
+
+	// Save original args pointer (in a0/X10)
+	MOV X10, SAVE_ARGP(SP)
+
+	// X9 := args pointer (syscall15Args*)
+	MOV X10, X9
+
+	// Load float args into fa0-fa7 (F10-F17)
+	MOVD syscall15Args_f1(X9), F10
+	MOVD syscall15Args_f2(X9), F11
+	MOVD syscall15Args_f3(X9), F12
+	MOVD syscall15Args_f4(X9), F13
+	MOVD syscall15Args_f5(X9), F14
+	MOVD syscall15Args_f6(X9), F15
+	MOVD syscall15Args_f7(X9), F16
+	MOVD syscall15Args_f8(X9), F17
+
+	// Load integer args into a0-a7 (X10-X17)
+	MOV syscall15Args_a1(X9), X10
+	MOV syscall15Args_a2(X9), X11
+	MOV syscall15Args_a3(X9), X12
+	MOV syscall15Args_a4(X9), X13
+	MOV syscall15Args_a5(X9), X14
+	MOV syscall15Args_a6(X9), X15
+	MOV syscall15Args_a7(X9), X16
+	MOV syscall15Args_a8(X9), X17
+
+	// Spill a9-a15 onto the stack (C ABI)
+	MOV syscall15Args_a9(X9), X18
+	MOV X18, 0(SP)
+	MOV syscall15Args_a10(X9), X18
+	MOV X18, 8(SP)
+	MOV syscall15Args_a11(X9), X18
+	MOV X18, 16(SP)
+	MOV syscall15Args_a12(X9), X18
+	MOV X18, 24(SP)
+	MOV syscall15Args_a13(X9), X18
+	MOV X18, 32(SP)
+	MOV syscall15Args_a14(X9), X18
+	MOV X18, 40(SP)
+	MOV syscall15Args_a15(X9), X18
+	MOV X18, 48(SP)
+
+	// Call fn
+	// IMPORTANT: preserve RA across this call (we saved it above)
+	MOV  syscall15Args_fn(X9), X18
+	CALL X18
+
+	// Restore args pointer (syscall15Args*) for storing results
+	MOV SAVE_ARGP(SP), X9
+
+	// Store results back
+	MOV X10, syscall15Args_a1(X9)
+	MOV X11, syscall15Args_a2(X9)
+
+	// Store back float return regs if used by your ABI contract
+	MOVD F10, syscall15Args_f1(X9)
+	MOVD F11, syscall15Args_f2(X9)
+	MOVD F12, syscall15Args_f3(X9)
+	MOVD F13, syscall15Args_f4(X9)
+
+	// Restore callee-saved regs and return address
+	MOV SAVE_X18(SP), X18
+	MOV SAVE_X9(SP), X9
+	MOV SAVE_RA(SP), X1
+
+	ADD $STACK_SIZE, SP
+	RET