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| author | Shenghou Ma <minux@golang.org> | 2016-08-05 19:16:07 -0400 |
|---|---|---|
| committer | Minux Ma <minux@golang.org> | 2016-08-05 23:56:07 +0000 |
| commit | 26015b95634de49bc5b4ac998e8a2d1fcb8eca79 (patch) | |
| tree | 971f0244510a0dd87057ecfa6034ccfcf8eefaff | |
| parent | 9fde86b0124b8c75000eb5d05887eff922a24566 (diff) | |
| download | go-26015b95634de49bc5b4ac998e8a2d1fcb8eca79.tar.gz go-26015b95634de49bc5b4ac998e8a2d1fcb8eca79.zip | |
runtime: make stack 16-byte aligned for external code in _rt0_amd64_linux_lib
Fixes #16618.
Change-Id: Iffada12e8672bbdbcf2e787782c497e2c45701b1
Reviewed-on: https://go-review.googlesource.com/25550
Run-TryBot: Minux Ma <minux@golang.org>
Reviewed-by: Arjan Van De Ven <arjan.van.de.ven@intel.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
| -rw-r--r-- | src/runtime/rt0_linux_amd64.s | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/runtime/rt0_linux_amd64.s b/src/runtime/rt0_linux_amd64.s index 564b51c0b3..ced471f5cb 100644 --- a/src/runtime/rt0_linux_amd64.s +++ b/src/runtime/rt0_linux_amd64.s @@ -12,13 +12,18 @@ TEXT _rt0_amd64_linux(SB),NOSPLIT,$-8 // When building with -buildmode=c-shared, this symbol is called when the shared // library is loaded. -TEXT _rt0_amd64_linux_lib(SB),NOSPLIT,$0x48 +// Note: This function calls external C code, which might required 16-byte stack +// alignment after cmd/internal/obj applies its transformations. +TEXT _rt0_amd64_linux_lib(SB),NOSPLIT,$0x50 + MOVQ SP, AX + ANDQ $-16, SP MOVQ BX, 0x10(SP) MOVQ BP, 0x18(SP) MOVQ R12, 0x20(SP) MOVQ R13, 0x28(SP) MOVQ R14, 0x30(SP) MOVQ R15, 0x38(SP) + MOVQ AX, 0x40(SP) MOVQ DI, _rt0_amd64_linux_lib_argc<>(SB) MOVQ SI, _rt0_amd64_linux_lib_argv<>(SB) @@ -50,6 +55,7 @@ restore: MOVQ 0x28(SP), R13 MOVQ 0x30(SP), R14 MOVQ 0x38(SP), R15 + MOVQ 0x40(SP), SP RET TEXT _rt0_amd64_linux_lib_go(SB),NOSPLIT,$0 |