| // 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. |
| |
| /* |
| * Apple still insists on underscore prefixes for C function names. |
| */ |
| #if defined(__APPLE__) |
| #define EXT(s) _##s |
| #else |
| #define EXT(s) s |
| #endif |
| |
| /* |
| * Because the assembler might target an earlier revision of the ISA |
| * by default, we must explicitly specify the ISA revision to ensure |
| * BLX is recognized as a valid instruction. |
| */ |
| .arch armv5t |
| |
| /* |
| * void crosscall_arm2(void (*fn)(void), void (*setmg_gcc)(void *m, void *g), void *m, void *g) |
| * |
| * Calling into the 5c tool chain, where all registers are caller save. |
| * Called from standard ARM EABI, where r4-r11 are callee-save, so they |
| * must be saved explicitly. |
| */ |
| .globl EXT(crosscall_arm2) |
| EXT(crosscall_arm2): |
| push {r4, r5, r6, r7, r8, r9, r10, r11, ip, lr} |
| mov r4, r0 |
| mov r5, r1 |
| mov r0, r2 |
| mov r1, r3 |
| blx r5 // setmg(m, g) |
| blx r4 // fn() |
| pop {r4, r5, r6, r7, r8, r9, r10, r11, ip, pc} |
| |
| .globl EXT(__stack_chk_fail_local) |
| EXT(__stack_chk_fail_local): |
| 1: |
| b 1b |
| |
| #ifdef __ELF__ |
| .section .note.GNU-stack,"",%progbits |
| #endif |
