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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libgo/runtime/go-setenv.c | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libgo/runtime/go-setenv.c')
-rw-r--r-- | gcc-4.9/libgo/runtime/go-setenv.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gcc-4.9/libgo/runtime/go-setenv.c b/gcc-4.9/libgo/runtime/go-setenv.c new file mode 100644 index 000000000..6c7378c9e --- /dev/null +++ b/gcc-4.9/libgo/runtime/go-setenv.c @@ -0,0 +1,70 @@ +/* go-setenv.c -- set the C environment from Go. + + Copyright 2011 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 "config.h" + +#include <stddef.h> +#include <stdlib.h> + +#include "go-alloc.h" +#include "runtime.h" + +/* Set the C environment from Go. This is called by syscall.Setenv. */ + +void setenv_c (String, String) __asm__ (GOSYM_PREFIX "syscall.setenv_c"); + +void +setenv_c (String k, String v) +{ + const byte *ks; + unsigned char *kn; + const byte *vs; + unsigned char *vn; + + ks = k.str; + if (ks == NULL) + ks = (const byte *) ""; + kn = NULL; + + vs = v.str; + if (vs == NULL) + vs = (const byte *) ""; + vn = NULL; + +#ifdef HAVE_SETENV + + if (ks != NULL && ks[k.len] != 0) + { + kn = __go_alloc (k.len + 1); + __builtin_memcpy (kn, ks, k.len); + ks = kn; + } + + if (vs != NULL && vs[v.len] != 0) + { + vn = __go_alloc (v.len + 1); + __builtin_memcpy (vn, vs, v.len); + vs = vn; + } + + setenv ((const char *) ks, (const char *) vs, 1); + +#else /* !defined(HAVE_SETENV) */ + + kn = __go_alloc (k.len + v.len + 2); + __builtin_memcpy (kn, ks, k.len); + kn[k.len] = '='; + __builtin_memcpy (kn + k.len + 1, vs, v.len); + kn[k.len + v.len + 1] = '\0'; + putenv ((char *) kn); + +#endif /* !defined(HAVE_SETENV) */ + + if (kn != NULL) + __go_free (kn); + if (vn != NULL) + __go_free (vn); +} |