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Remove open-coded ilog2() implementations

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When we need integer log2, use the new library routine.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
H. Peter Anvin 2010-04-21 16:46:57 -07:00
parent 084b13227e
commit 35c30da61b
3 changed files with 3 additions and 67 deletions
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8
output/outcoff.c
View File

@ -391,13 +391,7 @@ static int32_t coff_section_names(char *name, int pass, int *bits)
" to better than 64-byte boundaries");
else {
align_and = ~0x00F00000L;
align_or = (align == 1 ? 0x00100000L :
align == 2 ? 0x00200000L :
align == 4 ? 0x00300000L :
align == 8 ? 0x00400000L :
align == 16 ? 0x00500000L :
align ==
32 ? 0x00600000L : 0x00700000L);
align_or = ilog2_32(align) << 20;
}
}
}

31
output/outmacho32.c
View File

@ -229,35 +229,6 @@ uint32_t rel_padcnt = 0;
static void debug_reloc (struct reloc *);
static void debug_section_relocs (struct section *) _unused;
static int exact_log2 (uint32_t align)
{
if (align == 0) {
return 0;
} else if (align & (align-1)) {
return -1; /* Not a power of 2 */
} else {
#ifdef HAVE_GNUC_4
return __builtin_ctzl (align);
#else
uint32_t result = 0;
/* We know exactly one bit is set at this point. */
if (align & 0xffff0000)
result |= 16;
if (align & 0xff00ff00)
result |= 8;
if (align & 0xf0f0f0f0)
result |= 4;
if (align & 0xcccccccc)
result |= 2;
if (align & 0xaaaaaaaa)
result |= 1;
return result;
#endif
}
}
static struct section *get_section_by_name(const char *segname,
const char *sectname)
{
@ -569,7 +540,7 @@ static int32_t macho_section(char *name, int pass, int *bits)
int newAlignment, value;
value = strtoul(currentAttribute + 6, (char**)&end, 0);
newAlignment = exact_log2(value);
newAlignment = alignlog2_32(value);
if (0 != *end) {
nasm_error(ERR_PANIC,

31
output/outmacho64.c
View File

@ -235,35 +235,6 @@ uint64_t rel_padcnt64 = 0;
static void debug_reloc (struct reloc *);
static void debug_section_relocs (struct section *) _unused;
static int exact_log2 (uint32_t align)
{
if (align == 0) {
return 0;
} else if (align & (align-1)) {
return -1; /* Not a power of 2 */
} else {
#ifdef HAVE_GNUC_4
return __builtin_ctzl (align);
#else
uint32_t result = 0;
/* We know exactly one bit is set at this point. */
if (align & 0xffff0000)
result |= 16;
if (align & 0xff00ff00)
result |= 8;
if (align & 0xf0f0f0f0)
result |= 4;
if (align & 0xcccccccc)
result |= 2;
if (align & 0xaaaaaaaa)
result |= 1;
return result;
#endif
}
}
static struct section *get_section_by_name(const char *segname,
const char *sectname)
{
@ -704,7 +675,7 @@ static int32_t macho_section(char *name, int pass, int *bits)
int newAlignment, value;
value = strtoul(currentAttribute + 6, (char**)&end, 0);
newAlignment = exact_log2(value);
newAlignment = alignlog2_32(value);
if (0 != *end) {
nasm_error(ERR_PANIC,