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- shm memory patch
- optimized a bit sample mixing routines in c and x_86 asm
This commit is contained in:
Jaroslav Kysela 2004-01-24 16:34:35 +00:00
parent 0f88788f8b
commit b798d89c0f
5 changed files with 86 additions and 83 deletions
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99
src/pcm/pcm_dmix_i386.h
View file

@ -51,16 +51,17 @@ static void MIX_AREAS1(unsigned int size,
"\tmovl %1, %%edi\n"
"\tmovl %2, %%esi\n"
"\tmovl %3, %%ebx\n"
"\tjmp 2f\n"
/*
* while (size-- > 0) {
* for (;;)
*/
"\tcmpl $0, %0\n"
"jz 6f\n"
"\t.p2align 4,,15\n"
"1:"
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
/*
* sample = *src;
@ -69,14 +70,17 @@ static void MIX_AREAS1(unsigned int size,
* sample -= sum_sample;
* xadd(*sum, sample);
*/
"\tmovw $0, %%ax\n"
"\tmovw $1, %%cx\n"
"2:"
"\txor %%ax, %%ax\n"
"\tmovw %%ax, %%cx\n"
"\tincw %%cx\n"
"\tmovl (%%ebx), %%edx\n"
"\t" LOCK_PREFIX "cmpxchgw %%cx, (%%edi)\n"
"\tmovswl (%%esi), %%ecx\n"
"\tjnz 2f\n"
"\tjnz 3f\n"
"\tsubl %%edx, %%ecx\n"
"2:"
"3:"
"\t" LOCK_PREFIX "addl %%ecx, (%%ebx)\n"
/*
@ -87,25 +91,22 @@ static void MIX_AREAS1(unsigned int size,
* } while (v != *sum);
*/
"3:"
"4:"
"\tmovl (%%ebx), %%ecx\n"
"\tcmpl $0x7fff,%%ecx\n"
"\tjg 4f\n"
"\tjg 5f\n"
"\tcmpl $-0x8000,%%ecx\n"
"\tjl 5f\n"
"\tjl 6f\n"
"\tmovw %%cx, (%%edi)\n"
"\tcmpl %%ecx, (%%ebx)\n"
"\tjnz 3b\n"
"\tjnz 4b\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"
"\tjz 7f\n"
"\tjmp 1b\n"
/*
* sample > 0x7fff
@ -113,16 +114,13 @@ static void MIX_AREAS1(unsigned int size,
"\t.p2align 4,,15\n"
"4:"
"5:"
"\tmovw $0x7fff, (%%edi)\n"
"\tcmpl %%ecx,(%%ebx)\n"
"\tjnz 3b\n"
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
"\tjnz 4b\n"
"\tdecl %0\n"
"\tjnz 1b\n"
"\tjmp 6f\n"
"\tjmp 7f\n"
/*
* sample < -0x8000
@ -130,18 +128,15 @@ static void MIX_AREAS1(unsigned int size,
"\t.p2align 4,,15\n"
"5:"
"6:"
"\tmovw $-0x8000, (%%edi)\n"
"\tcmpl %%ecx, (%%ebx)\n"
"\tjnz 3b\n"
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
"\tjnz 4b\n"
"\tdecl %0\n"
"\tjnz 1b\n"
// "\tjmp 6f\n"
"6:"
"7:"
: /* no output regs */
: "m" (size), "m" (dst), "m" (src), "m" (sum), "m" (dst_step), "m" (src_step), "m" (sum_step)
@ -174,17 +169,15 @@ static void MIX_AREAS1_MMX(unsigned int size,
"\tmovl %1, %%edi\n"
"\tmovl %2, %%esi\n"
"\tmovl %3, %%ebx\n"
/*
* while (size-- > 0) {
*/
"\tcmpl $0, %0\n"
"jz 6f\n"
"\tjmp 2f\n"
"\t.p2align 4,,15\n"
"1:"
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
"2:"
/*
* sample = *src;
* sum_sample = *sum;
@ -192,14 +185,15 @@ static void MIX_AREAS1_MMX(unsigned int size,
* sample -= sum_sample;
* xadd(*sum, sample);
*/
"\tmovw $0, %%ax\n"
"\tmovw $1, %%cx\n"
"\txor %%ax, %%ax\n"
"\tmovw %%ax, %%cx\n"
"\tincw %%cx\n"
"\tmovl (%%ebx), %%edx\n"
"\t" LOCK_PREFIX "cmpxchgw %%cx, (%%edi)\n"
"\tmovswl (%%esi), %%ecx\n"
"\tjnz 2f\n"
"\tjnz 3f\n"
"\tsubl %%edx, %%ecx\n"
"2:"
"3:"
"\t" LOCK_PREFIX "addl %%ecx, (%%ebx)\n"
/*
@ -210,27 +204,20 @@ static void MIX_AREAS1_MMX(unsigned int size,
* } while (v != *sum);
*/
"3:"
"4:"
"\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"
"\tjnz 4b\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 */
@ -265,12 +252,6 @@ static void MIX_AREAS2(unsigned int size,
"\tmovl %2, %%esi\n"
"\tmovl %3, %%ebx\n"
/*
* while (size-- > 0) {
*/
"\tcmpl $0, %0\n"
"jz 6f\n"
"\t.p2align 4,,15\n"
"1:"
@ -334,12 +315,12 @@ static void MIX_AREAS2(unsigned int size,
/*
* while (size-- > 0)
*/
"\tdecl %0\n"
"\tjz 6f\n"
"\tadd %4, %%edi\n"
"\tadd %5, %%esi\n"
"\tadd %6, %%ebx\n"
"\tdecl %0\n"
"\tjnz 1b\n"
// "\tjmp 6f\n"
"\tjmp 1b\n"
"6:"
: /* no output regs */