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This commit is contained in:
YamaArashi 2016-11-01 08:35:13 -07:00
parent a793e62d83
commit 4db33778ad
2 changed files with 147 additions and 149 deletions
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4
data/graphics.s
View File

@ -716,21 +716,19 @@ gUnknown_08DC3A0C:: @ 8DC3A0C
gUnknown_08DC3CD4:: @ 8DC3CD4
.incbin "baserom.gba", 0xdc3cd4, 0x80
.align 2
gIntroCopyright_Pal:: @ 8DC3D54
.incbin "graphics/intro/copyright.gbapal"
.align 2
gIntroCopyright_Gfx:: @ 8DC3D74
.incbin "graphics/intro/copyright.4bpp.lz"
.align 2
gIntroCopyright_Tilemap:: @ 8DC3FD4
.incbin "graphics/intro/copyright.bin.lz"
.align 2
gUnknown_08DC4120:: @ 8DC4120
.incbin "baserom.gba", 0xdc4120, 0x20

292
src/libc.c
View File

@ -11,163 +11,163 @@
void *memcpy(void *dst0, const void *src0, size_t len0)
{
char *dst = dst0;
const char *src = src0;
long *aligned_dst;
const long *aligned_src;
unsigned int len = len0;
// If the size is small, or either src or dst is unaligned,
// then go to the byte copy loop. This should be rare.
if(len >= 16 && !(UNALIGNED(src) | UNALIGNED(dst)))
{
aligned_dst = (long *)dst;
aligned_src = (long *)src;
// Copy 4X long words at a time if possible.
while(len >= 16)
{
*aligned_dst++ = *aligned_src++;
*aligned_dst++ = *aligned_src++;
*aligned_dst++ = *aligned_src++;
*aligned_dst++ = *aligned_src++;
len -= 16;
}
// Copy one long word at a time if possible
while(len >= 4)
{
*aligned_dst++ = *aligned_src++;
len -= 4;
}
dst = (char *)aligned_dst;
src = (char *)aligned_src;
}
// Pick up any remaining bytes with a byte copier.
while(len--)
*dst++ = *src++;
return dst0;
char *dst = dst0;
const char *src = src0;
long *aligned_dst;
const long *aligned_src;
unsigned int len = len0;
// If the size is small, or either src or dst is unaligned,
// then go to the byte copy loop. This should be rare.
if(len >= 16 && !(UNALIGNED(src) | UNALIGNED(dst)))
{
aligned_dst = (long *)dst;
aligned_src = (long *)src;
// Copy 4X long words at a time if possible.
while(len >= 16)
{
*aligned_dst++ = *aligned_src++;
*aligned_dst++ = *aligned_src++;
*aligned_dst++ = *aligned_src++;
*aligned_dst++ = *aligned_src++;
len -= 16;
}
// Copy one long word at a time if possible
while(len >= 4)
{
*aligned_dst++ = *aligned_src++;
len -= 4;
}
dst = (char *)aligned_dst;
src = (char *)aligned_src;
}
// Pick up any remaining bytes with a byte copier.
while(len--)
*dst++ = *src++;
return dst0;
}
void *memset(void *m, int c, size_t n)
{
char *s = (char *)m;
int count, i;
unsigned long buffer;
unsigned long *aligned_addr;
unsigned char *unaligned_addr;
// If the size is small or m is unaligned,
// then go to the byte copy loop. This should be rare.
if(n >= LBLOCKSIZE && !UNALIGNED(m))
{
// We know that n is large and m is word-aligned.
aligned_addr = (unsigned long *)m;
// Store C into each char sized location in buffer so that
// we can set large blocks quickly.
c &= 0xFF;
if(LBLOCKSIZE == 4)
{
buffer = (c << 8) | c;
buffer |= (buffer << 16);
}
else
{
buffer = 0;
for(i = 0; i < LBLOCKSIZE; i++)
buffer = (buffer << 8) | c;
}
while(n >= LBLOCKSIZE * 4)
{
*aligned_addr++ = buffer;
*aligned_addr++ = buffer;
*aligned_addr++ = buffer;
*aligned_addr++ = buffer;
n -= LBLOCKSIZE * 4;
}
while(n >= LBLOCKSIZE)
{
*aligned_addr++ = buffer;
n -= LBLOCKSIZE;
}
s = (char *)aligned_addr;
}
// Pick up the remainder with a bytewise loop.
while(n--)
*s++ = (char)c;
return m;
char *s = (char *)m;
int count, i;
unsigned long buffer;
unsigned long *aligned_addr;
unsigned char *unaligned_addr;
// If the size is small or m is unaligned,
// then go to the byte copy loop. This should be rare.
if(n >= LBLOCKSIZE && !UNALIGNED(m))
{
// We know that n is large and m is word-aligned.
aligned_addr = (unsigned long *)m;
// Store C into each char sized location in buffer so that
// we can set large blocks quickly.
c &= 0xFF;
if(LBLOCKSIZE == 4)
{
buffer = (c << 8) | c;
buffer |= (buffer << 16);
}
else
{
buffer = 0;
for(i = 0; i < LBLOCKSIZE; i++)
buffer = (buffer << 8) | c;
}
while(n >= LBLOCKSIZE * 4)
{
*aligned_addr++ = buffer;
*aligned_addr++ = buffer;
*aligned_addr++ = buffer;
*aligned_addr++ = buffer;
n -= LBLOCKSIZE * 4;
}
while(n >= LBLOCKSIZE)
{
*aligned_addr++ = buffer;
n -= LBLOCKSIZE;
}
s = (char *)aligned_addr;
}
// Pick up the remainder with a bytewise loop.
while(n--)
*s++ = (char)c;
return m;
}
int strcmp(const char *s1, const char *s2)
{
unsigned long *a1;
unsigned long *a2;
// If s1 or s2 are unaligned, then skip this and compare bytes.
if(!(UNALIGNED(s1) | UNALIGNED(s2)))
{
// Compare them a word at a time.
a1 = (unsigned long *)s1;
a2 = (unsigned long *)s2;
while(*a1 == *a2)
{
// If *a1 == *a2, and we find a null in *a1,
// then the strings must be equal, so return zero.
if(CONTAINSNULL(*a1))
return 0;
a1++;
a2++;
}
s1 = (char *)a1;
s2 = (char *)a2;
}
// Check the remaining few bytes.
while(*s1 != '\0' && *s1 == *s2)
{
s1++;
s2++;
}
return (*(unsigned char *) s1) - (*(unsigned char *) s2);
unsigned long *a1;
unsigned long *a2;
// If s1 or s2 are unaligned, then skip this and compare bytes.
if(!(UNALIGNED(s1) | UNALIGNED(s2)))
{
// Compare them a word at a time.
a1 = (unsigned long *)s1;
a2 = (unsigned long *)s2;
while(*a1 == *a2)
{
// If *a1 == *a2, and we find a null in *a1,
// then the strings must be equal, so return zero.
if(CONTAINSNULL(*a1))
return 0;
a1++;
a2++;
}
s1 = (char *)a1;
s2 = (char *)a2;
}
// Check the remaining few bytes.
while(*s1 != '\0' && *s1 == *s2)
{
s1++;
s2++;
}
return (*(unsigned char *) s1) - (*(unsigned char *) s2);
}
char* strcpy(char *dst0, const char *src0)
{
char *dst = dst0;
const char *src = src0;
unsigned long *a1;
const unsigned long *a2;
/* If SRC or DEST is unaligned, then copy bytes. */
if(!(UNALIGNED(src) | UNALIGNED(dst)))
{
/* SRC and DEST are both "long int" aligned, try to do "long int"
sized copies. */
a1 = (unsigned long *)dst;
a2 = (unsigned long *)src;
while(!CONTAINSNULL(*a2))
{
*a1++ = *a2++;
}
dst = (char *)a1;
src = (char *)a2;
}
// Copy the remaining few bytes.
while(*dst++ = *src++);
return dst0;
char *dst = dst0;
const char *src = src0;
unsigned long *a1;
const unsigned long *a2;
// If SRC or DEST is unaligned, then copy bytes.
if(!(UNALIGNED(src) | UNALIGNED(dst)))
{
// SRC and DEST are both "long int" aligned, try to do "long int"
// sized copies.
a1 = (unsigned long *)dst;
a2 = (unsigned long *)src;
while(!CONTAINSNULL(*a2))
{
*a1++ = *a2++;
}
dst = (char *)a1;
src = (char *)a2;
}
// Copy the remaining few bytes.
while(*dst++ = *src++);
return dst0;
}