diff options
Diffstat (limited to 'src/runtime/asm_arm.s')
| -rw-r--r-- | src/runtime/asm_arm.s | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/src/runtime/asm_arm.s b/src/runtime/asm_arm.s index 3e78d91143..36fb022f95 100644 --- a/src/runtime/asm_arm.s +++ b/src/runtime/asm_arm.s @@ -96,7 +96,7 @@ TEXT runtime·breakpoint(SB),NOSPLIT,$0-0 #ifdef GOOS_nacl WORD $0xe125be7f // BKPT 0x5bef, NACL_INSTR_ARM_BREAKPOINT #else - WORD $0xe1200071 // BKPT 0x0001 + WORD $0xe7f001f0 // undefined instruction that gdb understands is a software breakpoint #endif RET @@ -480,15 +480,13 @@ TEXT gosave<>(SB),NOSPLIT,$0 // Call fn(arg) on the scheduler stack, // aligned appropriately for the gcc ABI. // See cgocall.c for more details. -TEXT runtime·asmcgocall(SB),NOSPLIT,$0-8 - GO_ARGS +TEXT ·asmcgocall(SB),NOSPLIT,$0-8 MOVW fn+0(FP), R1 MOVW arg+4(FP), R0 BL asmcgocall<>(SB) RET -TEXT runtime·asmcgocall_errno(SB),NOSPLIT,$0-12 - GO_ARGS +TEXT ·asmcgocall_errno(SB),NOSPLIT,$0-12 MOVW fn+0(FP), R1 MOVW arg+4(FP), R0 BL asmcgocall<>(SB) @@ -551,8 +549,7 @@ TEXT runtime·cgocallback(SB),NOSPLIT,$12-12 // cgocallback_gofunc(void (*fn)(void*), void *frame, uintptr framesize) // See cgocall.c for more details. -TEXT runtime·cgocallback_gofunc(SB),NOSPLIT,$8-12 - GO_ARGS +TEXT ·cgocallback_gofunc(SB),NOSPLIT,$8-12 NO_LOCAL_POINTERS // Load m and g from thread-local storage. @@ -1303,3 +1300,20 @@ yieldloop: RET SUB $1, R1 B yieldloop + +// Called from cgo wrappers, this function returns g->m->curg.stack.hi. +// Must obey the gcc calling convention. +TEXT _cgo_topofstack(SB),NOSPLIT,$8 + // R11 and g register are clobbered by load_g. They are + // callee-save in the gcc calling convention, so save them here. + MOVW R11, saveR11-4(SP) + MOVW g, saveG-8(SP) + + BL runtime·load_g(SB) + MOVW g_m(g), R0 + MOVW m_curg(R0), R0 + MOVW (g_stack+stack_hi)(R0), R0 + + MOVW saveG-8(SP), g + MOVW saveR11-4(SP), R11 + RET |