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[AArch64] Increase static buffer size in aarch64_rewrite_selected_cpu

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* common/config/aarch64/aarch64-common.c (AARCH64_CPU_NAME_LENGTH):
	Increase to 128.
	(aarch64_rewrite_selected_cpu): Do not chop off extensions starting
	at '.'.  Assert that there's enough space for everything.

From-SVN: r222258
This commit is contained in:
Kyrylo Tkachov 2015-04-21 08:14:22 +00:00 committed by Kyrylo Tkachov
parent d60dbb52fc
commit efb25f5443
2 changed files with 28 additions and 9 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2015-04-21 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* common/config/aarch64/aarch64-common.c (AARCH64_CPU_NAME_LENGTH):
Increase to 128.
(aarch64_rewrite_selected_cpu): Do not chop off extensions starting
at '.'. Assert that there's enough space for everything.
2015-04-21 Uros Bizjak <ubizjak@gmail.com>
PR tree-optimization/64950

30
gcc/common/config/aarch64/aarch64-common.c
View File

@ -27,6 +27,7 @@
#include "common/common-target-def.h"
#include "opts.h"
#include "flags.h"
#include "errors.h"
#ifdef TARGET_BIG_ENDIAN_DEFAULT
#undef TARGET_DEFAULT_TARGET_FLAGS
@ -89,23 +90,34 @@ aarch64_handle_option (struct gcc_options *opts,
struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
#define AARCH64_CPU_NAME_LENGTH 20
#define AARCH64_CPU_NAME_LENGTH 128
/* Truncate NAME at the first '.' character seen, or return
NAME unmodified. */
/* Truncate NAME at the first '.' character seen up to the first '+'
or return NAME unmodified. */
const char *
aarch64_rewrite_selected_cpu (const char *name)
{
static char output_buf[AARCH64_CPU_NAME_LENGTH + 1] = {0};
char *arg_pos;
const char *bL_sep;
const char *feats;
size_t pref_size;
size_t feat_size;
strncpy (output_buf, name, AARCH64_CPU_NAME_LENGTH);
arg_pos = strchr (output_buf, '.');
bL_sep = strchr (name, '.');
if (!bL_sep)
return name;
/* If we found a '.' truncate the entry at that point. */
if (arg_pos)
*arg_pos = '\0';
feats = strchr (name, '+');
feat_size = feats ? strnlen (feats, AARCH64_CPU_NAME_LENGTH) : 0;
pref_size = bL_sep - name;
if ((feat_size + pref_size) > AARCH64_CPU_NAME_LENGTH)
internal_error ("-mcpu string too large");
strncpy (output_buf, name, pref_size);
if (feats)
strncpy (output_buf + pref_size, feats, feat_size);
return output_buf;
}