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| author | Ian Lance Taylor <iant@golang.org> | 2017-10-09 11:31:20 -0700 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2017-10-11 20:07:31 +0000 |
| commit | cf3f771203c46d73a84d86e5ef7865d19e983150 (patch) | |
| tree | 2c430aa36b095ac9b8c149cdeb45ca878c9df03f /src/runtime/asm_amd64.s | |
| parent | e29efbcbcbcd7dde56ac0b4880ff8c13fdb6a89d (diff) | |
| download | go-git-cf3f771203c46d73a84d86e5ef7865d19e983150.tar.gz | |
runtime: unify amd64 -buildmode=exe entry point code
All of the amd64 entry point code is the same except for Plan 9.
Unify it all into asm_amd64.s.
Change-Id: Id47ce3a7bb2bb0fd48f326a2d88ed18b17dee456
Reviewed-on: https://go-review.googlesource.com/69292
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Diffstat (limited to 'src/runtime/asm_amd64.s')
| -rw-r--r-- | src/runtime/asm_amd64.s | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/runtime/asm_amd64.s b/src/runtime/asm_amd64.s index d87f454e03..838a1681da 100644 --- a/src/runtime/asm_amd64.s +++ b/src/runtime/asm_amd64.s @@ -7,6 +7,21 @@ #include "funcdata.h" #include "textflag.h" +// _rt0_amd64 is common startup code for most amd64 systems when using +// internal linking. This is the entry point for the program from the +// kernel for an ordinary -buildmode=exe program. The stack holds the +// number of arguments and the C-style argv. +TEXT _rt0_amd64(SB),NOSPLIT,$-8 + MOVQ 0(SP), DI // argc + LEAQ 8(SP), SI // argv + JMP runtime·rt0_go(SB) + +// main is common startup code for most amd64 systems when using +// external linking. The C startup code will call the symbol "main" +// passing argc and argv in the usual C ABI registers DI and SI. +TEXT main(SB),NOSPLIT,$-8 + JMP runtime·rt0_go(SB) + TEXT runtime·rt0_go(SB),NOSPLIT,$0 // copy arguments forward on an even stack MOVQ DI, AX // argc |