diff options
Diffstat (limited to 'src/runtime/os_linux_386.c')
-rw-r--r-- | src/runtime/os_linux_386.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/runtime/os_linux_386.c b/src/runtime/os_linux_386.c new file mode 100644 index 000000000..dc89d04e2 --- /dev/null +++ b/src/runtime/os_linux_386.c @@ -0,0 +1,38 @@ +// Copyright 2009 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. + +#include "runtime.h" +#include "defs_GOOS_GOARCH.h" +#include "os_GOOS.h" +#include "textflag.h" + +#define AT_NULL 0 +#define AT_RANDOM 25 +#define AT_SYSINFO 32 +extern uint32 runtime·_vdso; + +#pragma textflag NOSPLIT +void +runtime·linux_setup_vdso(int32 argc, byte **argv) +{ + byte **envp; + uint32 *auxv; + + // skip envp to get to ELF auxiliary vector. + for(envp = &argv[argc+1]; *envp != nil; envp++) + ; + envp++; + + for(auxv=(uint32*)envp; auxv[0] != AT_NULL; auxv += 2) { + if(auxv[0] == AT_SYSINFO) { + runtime·_vdso = auxv[1]; + continue; + } + if(auxv[0] == AT_RANDOM) { + runtime·startup_random_data = (byte*)auxv[1]; + runtime·startup_random_data_len = 16; + continue; + } + } +} |