From e8d417d272290027e10e348f81cbc6bb5fe0ec13 Mon Sep 17 00:00:00 2001 From: "Fangming.Fang" Date: Sun, 8 Apr 2018 07:32:43 +0000 Subject: runtime: enable memory sanitizer on arm64 Changes include: 1. open compilation option -msan for arm64 2. modify doc to explain -msan is also supported on linux/arm64 3. wrap msan lib API in msan_arm64.s 4. use libc for sigaction syscalls when cgo is enabled 5. use libc for mmap syscalls when cgo is enabled Change-Id: I26ebe61ff7ce1906125f54a0182a720f9d58ec11 Reviewed-on: https://go-review.googlesource.com/109255 Run-TryBot: Ian Lance Taylor TryBot-Result: Gobot Gobot Reviewed-by: Ian Lance Taylor --- src/runtime/sys_linux_arm64.s | 37 +++++++++++++++++++++++++++++++++++-- 1 file changed, 35 insertions(+), 2 deletions(-) (limited to 'src/runtime/sys_linux_arm64.s') diff --git a/src/runtime/sys_linux_arm64.s b/src/runtime/sys_linux_arm64.s index f930d1f044..c6afd76a65 100644 --- a/src/runtime/sys_linux_arm64.s +++ b/src/runtime/sys_linux_arm64.s @@ -292,6 +292,16 @@ TEXT runtime·rt_sigaction(SB),NOSPLIT|NOFRAME,$0-36 MOVW R0, ret+32(FP) RET +// Call the function stored in _cgo_sigaction using the GCC calling convention. +TEXT runtime·callCgoSigaction(SB),NOSPLIT,$0 + MOVD sig+0(FP), R0 + MOVD new+8(FP), R1 + MOVD old+16(FP), R2 + MOVD _cgo_sigaction(SB), R3 + BL R3 + MOVW R0, ret+24(FP) + RET + TEXT runtime·sigfwd(SB),NOSPLIT,$0-32 MOVW sig+8(FP), R0 MOVD info+16(FP), R1 @@ -320,7 +330,7 @@ TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0 MOVD $runtime·sigtramp(SB), R3 B (R3) -TEXT runtime·mmap(SB),NOSPLIT|NOFRAME,$0 +TEXT runtime·sysMmap(SB),NOSPLIT|NOFRAME,$0 MOVD addr+0(FP), R0 MOVD n+8(FP), R1 MOVW prot+16(FP), R2 @@ -341,7 +351,21 @@ ok: MOVD $0, err+40(FP) RET -TEXT runtime·munmap(SB),NOSPLIT|NOFRAME,$0 +// Call the function stored in _cgo_mmap using the GCC calling convention. +// This must be called on the system stack. +TEXT runtime·callCgoMmap(SB),NOSPLIT,$0 + MOVD addr+0(FP), R0 + MOVD n+8(FP), R1 + MOVW prot+16(FP), R2 + MOVW flags+20(FP), R3 + MOVW fd+24(FP), R4 + MOVW off+28(FP), R5 + MOVD _cgo_mmap(SB), R9 + BL R9 + MOVD R0, ret+32(FP) + RET + +TEXT runtime·sysMunmap(SB),NOSPLIT|NOFRAME,$0 MOVD addr+0(FP), R0 MOVD n+8(FP), R1 MOVD $SYS_munmap, R8 @@ -352,6 +376,15 @@ TEXT runtime·munmap(SB),NOSPLIT|NOFRAME,$0 cool: RET +// Call the function stored in _cgo_munmap using the GCC calling convention. +// This must be called on the system stack. +TEXT runtime·callCgoMunmap(SB),NOSPLIT,$0 + MOVD addr+0(FP), R0 + MOVD n+8(FP), R1 + MOVD _cgo_munmap(SB), R9 + BL R9 + RET + TEXT runtime·madvise(SB),NOSPLIT|NOFRAME,$0 MOVD addr+0(FP), R0 MOVD n+8(FP), R1 -- cgit v1.3-5-g9baa