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Use asm code directly from src/pcm/pcm_dmix_i386.h

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This commit is contained in:
Jaroslav Kysela 2003-03-01 11:16:42 +00:00
parent 75d9142a83
commit e90d914915
1 changed files with 6 additions and 209 deletions
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215
test/code.c
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@ -56,7 +56,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
#define cmpxchg(ptr,o,n)\
((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
(unsigned long)(n),sizeof(*(ptr))))
(unsigned long)(n),sizeof(*(ptr))))
static inline void atomic_add(volatile int *dst, int v)
{
@ -135,214 +135,11 @@ void mix_areas0(unsigned int size,
}
}
void mix_areas1(unsigned int size,
volatile s16 *dst, s16 *src,
volatile s32 *sum, unsigned int dst_step,
unsigned int src_step, unsigned int sum_step)
{
/*
* ESI - src
* EDI - dst
* EBX - sum
* ECX - old sample
* EAX - sample / temporary
* EDX - temporary
*/
__asm__ __volatile__ (
"\n"
/*
* initialization, load ESI, EDI, EBX registers
*/
"\tmovl %1, %%edi\n"
"\tmovl %2, %%esi\n"
"\tmovl %3, %%ebx\n"
/*
* while (size-- > 0) {
*/
"\tcmp $0, %0\n"
"jz 6f\n"
"\t.p2align 4,,15\n"
"1:"
/*
* sample = *src;
* sum_sample = *sum;
* if (cmpxchg(*dst, 0, 1) == 0)
* sample -= sum_sample;
* xadd(*sum, sample);
*/
"\tmovw $0, %%ax\n"
"\tmovw $1, %%cx\n"
"\tmovl (%%ebx), %%edx\n"
"\t" LOCK_PREFIX "cmpxchgw %%cx, (%%edi)\n"
"\tmovswl (%%esi), %%ecx\n"
"\tjnz 2f\n"
"\tsubl %%edx, %%ecx\n"
"2:"
"\t" LOCK_PREFIX "addl %%ecx, (%%ebx)\n"
/*
* do {
* sample = old_sample = *sum;
* saturate(v);
* *dst = sample;
* } while (v != *sum);
*/
"3:"
"\tmovl (%%ebx), %%ecx\n"
"\tcmpl $0x7fff,%%ecx\n"
"\tjg 4f\n"
"\tcmpl $-0x8000,%%ecx\n"
"\tjl 5f\n"
"\tmovw %%cx, (%%edi)\n"
"\tcmpl %%ecx, (%%ebx)\n"
"\tjnz 3b\n"
/*
* while (size-- > 0)
*/
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
"\tdecl %0\n"
"\tjnz 1b\n"
"\tjmp 6f\n"
/*
* sample > 0x7fff
*/
"\t.p2align 4,,15\n"
"4:"
"\tmovw $0x7fff, (%%edi)\n"
"\tcmpl %%ecx,(%%ebx)\n"
"\tjnz 3b\n"
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
"\tdecl %0\n"
"\tjnz 1b\n"
"\tjmp 6f\n"
/*
* sample < -0x8000
*/
"\t.p2align 4,,15\n"
"5:"
"\tmovw $-0x8000, (%%edi)\n"
"\tcmpl %%ecx, (%%ebx)\n"
"\tjnz 3b\n"
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
"\tdecl %0\n"
"\tjnz 1b\n"
// "\tjmp 6f\n"
"6:"
: /* no output regs */
: "m" (size), "m" (dst), "m" (src), "m" (sum), "m" (dst_step), "m" (src_step), "m" (sum_step)
: "esi", "edi", "edx", "ecx", "ebx", "eax"
);
}
void mix_areas1_mmx(unsigned int size,
volatile s16 *dst, s16 *src,
volatile s32 *sum, unsigned int dst_step,
unsigned int src_step, unsigned int sum_step)
{
/*
* ESI - src
* EDI - dst
* EBX - sum
* ECX - old sample
* EAX - sample / temporary
* EDX - temporary
*/
__asm__ __volatile__ (
"\n"
/*
* initialization, load ESI, EDI, EBX registers
*/
"\tmovl %1, %%edi\n"
"\tmovl %2, %%esi\n"
"\tmovl %3, %%ebx\n"
/*
* while (size-- > 0) {
*/
"\tcmp $0, %0\n"
"\tjz 6f\n"
"\t.p2align 4,,15\n"
"1:"
/*
* sample = *src;
* sum_sample = *sum;
* if (cmpxchg(*dst, 0, 1) == 0)
* sample -= sum_sample;
* xadd(*sum, sample);
*/
"\tmovw $0, %%ax\n"
"\tmovw $1, %%cx\n"
"\tmovl (%%ebx), %%edx\n"
"\t" LOCK_PREFIX "cmpxchgw %%cx, (%%edi)\n"
"\tmovswl (%%esi), %%ecx\n"
"\tjnz 2f\n"
"\tsubl %%edx, %%ecx\n"
"2:"
"\t" LOCK_PREFIX "addl %%ecx, (%%ebx)\n"
/*
* do {
* sample = old_sample = *sum;
* saturate(v);
* *dst = sample;
* } while (v != *sum);
*/
"3:"
"\tmovl (%%ebx), %%ecx\n"
"\tmovd %%ecx, %%mm0\n"
"\tpackssdw %%mm1, %%mm0\n"
"\tmovd %%mm0, %%eax\n"
"\tmovw %%ax, (%%edi)\n"
"\tcmpl %%ecx, (%%ebx)\n"
"\tjnz 3b\n"
/*
* while (size-- > 0)
*/
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
"\tdecl %0\n"
"\tjnz 1b\n"
"\tjmp 6f\n"
"6:"
"\temms\n"
: /* no output regs */
: "m" (size), "m" (dst), "m" (src), "m" (sum), "m" (dst_step), "m" (src_step), "m" (sum_step)
: "esi", "edi", "edx", "ecx", "ebx", "eax"
);
}
#define MIX_AREAS1 mix_areas1
#define MIX_AREAS1_MMX mix_areas1_mmx
#include "../src/pcm/pcm_dmix_i386.h"
#undef MIX_AREAS1
#undef MIX_AREAS1_MMX
void mix_areas2(unsigned int size,
volatile s16 *dst, const s16 *src,