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| author | Russ Cox <rsc@golang.org> | 2013-03-06 15:03:04 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2013-03-06 15:03:04 -0500 |
| commit | 36b414f6397cadffab1a945eed645a3213f39d8a (patch) | |
| tree | 2a92db3349a329b963f4b776bf9e82dc77bcea98 /src/pkg/runtime/rt0_linux_amd64.s | |
| parent | cf8434fa3119d14abbc7f1ecec61f0cc947dfac4 (diff) | |
| download | go-36b414f6397cadffab1a945eed645a3213f39d8a.tar.xz | |
runtime: change amd64 startup convention
Now the default startup is that the program begins at _rt0_amd64_$GOOS,
which sets DI = argc, SI = argv and jumps to _rt0_amd64.
This makes the _rt0_amd64 entry match the expected semantics for
the standard C "main" function, which we can now provide for use when
linking against a standard C library.
R=golang-dev, devon.odell, minux.ma
CC=golang-dev
https://golang.org/cl/7525043
Diffstat (limited to 'src/pkg/runtime/rt0_linux_amd64.s')
| -rw-r--r-- | src/pkg/runtime/rt0_linux_amd64.s | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/pkg/runtime/rt0_linux_amd64.s b/src/pkg/runtime/rt0_linux_amd64.s index dac9ae181b..dfc9c0421b 100644 --- a/src/pkg/runtime/rt0_linux_amd64.s +++ b/src/pkg/runtime/rt0_linux_amd64.s @@ -2,9 +2,12 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// Darwin and Linux use the same linkage to main - TEXT _rt0_amd64_linux(SB),7,$-8 + LEAQ 8(SP), SI // argv + MOVQ 0(SP), DI // argc + MOVQ $main(SB), AX + JMP AX + +TEXT main(SB),7,$-8 MOVQ $_rt0_amd64(SB), AX - MOVQ SP, DI JMP AX |