diff options
Diffstat (limited to 'src/pkg/runtime/cgo/gcc_arm.S')
| -rw-r--r-- | src/pkg/runtime/cgo/gcc_arm.S | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/src/pkg/runtime/cgo/gcc_arm.S b/src/pkg/runtime/cgo/gcc_arm.S index 32d862984..809fcb9a0 100644 --- a/src/pkg/runtime/cgo/gcc_arm.S +++ b/src/pkg/runtime/cgo/gcc_arm.S @@ -1 +1,36 @@ -/* unimplemented */ +// 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 + +/* + * void crosscall_arm2(void (*fn)(void), void *g, void *m) + * + * 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 r10, r1 // g + mov r9, r2 // m + mov r3, r0 // save r0, cgo_tls_set_gm will clobber it + bl EXT(x_cgo_save_gm) // save current g and m into TLS variable + mov lr, pc + mov pc, r3 + 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 + |