diff options
author | Ben Cheng <bccheng@google.com> | 2012-10-01 10:30:31 -0700 |
---|---|---|
committer | Ben Cheng <bccheng@google.com> | 2012-10-01 10:30:31 -0700 |
commit | 82bcbebce43f0227f506d75a5b764b6847041bae (patch) | |
tree | fe9f8597b48a430c4daeb5123e3e8eb28e6f9da9 /gcc-4.7/libgo/runtime/go-int-to-string.c | |
parent | 3c052de3bb16ac53b6b6ed659ec7557eb84c7590 (diff) | |
download | toolchain_gcc-82bcbebce43f0227f506d75a5b764b6847041bae.tar.gz toolchain_gcc-82bcbebce43f0227f506d75a5b764b6847041bae.tar.bz2 toolchain_gcc-82bcbebce43f0227f506d75a5b764b6847041bae.zip |
Initial check-in of gcc 4.7.2.
Change-Id: I4a2f5a921c21741a0e18bda986d77e5f1bef0365
Diffstat (limited to 'gcc-4.7/libgo/runtime/go-int-to-string.c')
-rw-r--r-- | gcc-4.7/libgo/runtime/go-int-to-string.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/gcc-4.7/libgo/runtime/go-int-to-string.c b/gcc-4.7/libgo/runtime/go-int-to-string.c new file mode 100644 index 000000000..e9645bf98 --- /dev/null +++ b/gcc-4.7/libgo/runtime/go-int-to-string.c @@ -0,0 +1,61 @@ +/* go-int-to-string.c -- convert an integer to a string in Go. + + 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 "go-string.h" +#include "runtime.h" +#include "arch.h" +#include "malloc.h" + +struct __go_string +__go_int_to_string (int v) +{ + char buf[4]; + int len; + unsigned char *retdata; + struct __go_string ret; + + if (v <= 0x7f) + { + buf[0] = v; + len = 1; + } + else if (v <= 0x7ff) + { + buf[0] = 0xc0 + (v >> 6); + buf[1] = 0x80 + (v & 0x3f); + len = 2; + } + else + { + /* If the value is out of range for UTF-8, turn it into the + "replacement character". */ + if (v > 0x10ffff) + v = 0xfffd; + + if (v <= 0xffff) + { + buf[0] = 0xe0 + (v >> 12); + buf[1] = 0x80 + ((v >> 6) & 0x3f); + buf[2] = 0x80 + (v & 0x3f); + len = 3; + } + else + { + buf[0] = 0xf0 + (v >> 18); + buf[1] = 0x80 + ((v >> 12) & 0x3f); + buf[2] = 0x80 + ((v >> 6) & 0x3f); + buf[3] = 0x80 + (v & 0x3f); + len = 4; + } + } + + retdata = runtime_mallocgc (len, FlagNoPointers, 1, 0); + __builtin_memcpy (retdata, buf, len); + ret.__data = retdata; + ret.__length = len; + + return ret; +} |