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Diffstat (limited to 'src/runtime/asan_ppc64le.s')
| -rw-r--r-- | src/runtime/asan_ppc64le.s | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/runtime/asan_ppc64le.s b/src/runtime/asan_ppc64le.s new file mode 100644 index 0000000..d13301a --- /dev/null +++ b/src/runtime/asan_ppc64le.s @@ -0,0 +1,87 @@ +// 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. + +//go:build asan + +#include "go_asm.h" +#include "textflag.h" + +#define RARG0 R3 +#define RARG1 R4 +#define RARG2 R5 +#define RARG3 R6 +#define FARG R12 + +// Called from instrumented code. +// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr) +TEXT runtime·doasanread(SB),NOSPLIT|NOFRAME,$0-32 + MOVD addr+0(FP), RARG0 + MOVD sz+8(FP), RARG1 + MOVD sp+16(FP), RARG2 + MOVD pc+24(FP), RARG3 + // void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc); + MOVD $__asan_read_go(SB), FARG + BR asancall<>(SB) + +// func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr) +TEXT runtime·doasanwrite(SB),NOSPLIT|NOFRAME,$0-32 + MOVD addr+0(FP), RARG0 + MOVD sz+8(FP), RARG1 + MOVD sp+16(FP), RARG2 + MOVD pc+24(FP), RARG3 + // void __asan_write_go(void *addr, uintptr_t sz, void *sp, void *pc); + MOVD $__asan_write_go(SB), FARG + BR asancall<>(SB) + +// func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr) +TEXT runtime·asanunpoison(SB),NOSPLIT|NOFRAME,$0-16 + MOVD addr+0(FP), RARG0 + MOVD sz+8(FP), RARG1 + // void __asan_unpoison_go(void *addr, uintptr_t sz); + MOVD $__asan_unpoison_go(SB), FARG + BR asancall<>(SB) + +// func runtime·asanpoison(addr unsafe.Pointer, sz uintptr) +TEXT runtime·asanpoison(SB),NOSPLIT|NOFRAME,$0-16 + MOVD addr+0(FP), RARG0 + MOVD sz+8(FP), RARG1 + // void __asan_poison_go(void *addr, uintptr_t sz); + MOVD $__asan_poison_go(SB), FARG + BR asancall<>(SB) + +// func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr) +TEXT runtime·asanregisterglobals(SB),NOSPLIT|NOFRAME,$0-16 + MOVD addr+0(FP), RARG0 + MOVD n+8(FP), RARG1 + // void __asan_register_globals_go(void *addr, uintptr_t n); + MOVD $__asan_register_globals_go(SB), FARG + BR asancall<>(SB) + +// Switches SP to g0 stack and calls (FARG). Arguments already set. +TEXT asancall<>(SB), NOSPLIT, $0-0 + // LR saved in generated prologue + // Get info from the current goroutine + MOVD runtime·tls_g(SB), R10 // g offset in TLS + MOVD 0(R10), g + MOVD g_m(g), R7 // m for g + MOVD R1, R16 // callee-saved, preserved across C call + MOVD m_g0(R7), R10 // g0 for m + CMP R10, g // same g0? + BEQ call // already on g0 + MOVD (g_sched+gobuf_sp)(R10), R1 // switch R1 +call: + // prepare frame for C ABI + SUB $32, R1 // create frame for callee saving LR, CR, R2 etc. + RLDCR $0, R1, $~15, R1 // align SP to 16 bytes + MOVD FARG, CTR // address of function to be called + MOVD R0, 0(R1) // clear back chain pointer + BL (CTR) + MOVD $0, R0 // C code can clobber R0 set it back to 0 + MOVD R16, R1 // restore R1; + MOVD runtime·tls_g(SB), R10 // find correct g + MOVD 0(R10), g + RET + +// tls_g, g value for each thread in TLS +GLOBL runtime·tls_g+0(SB), TLSBSS+DUPOK, $8 |