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Add timings to CpuSet and CpuFastSet

This commit is contained in:
Jeffrey Pfau 2013-10-09 01:57:53 -07:00
parent 09a0f95ed4
commit c19d1117f1
1 changed files with 35 additions and 14 deletions
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49
src/gba/gba-bios.c
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@ -28,16 +28,18 @@ static void _CpuSet(struct GBA* gba) {
if (wordsize == 4) {
source &= 0xFFFFFFFC;
dest &= 0xFFFFFFFC;
int32_t word = gba->memory.d.load32(&gba->memory.d, source, 0);
int32_t word = gba->memory.d.load32(&gba->memory.d, source, &gba->cpu.cycles);
for (i = 0; i < count; ++i) {
gba->memory.d.store32(&gba->memory.d, dest + (i << 2), word, 0);
gba->memory.d.store32(&gba->memory.d, dest + (i << 2), word, &gba->cpu.cycles);
gba->board.d.processEvents(&gba->board.d);
}
} else {
source &= 0xFFFFFFFE;
dest &= 0xFFFFFFFE;
uint16_t word = gba->memory.d.load16(&gba->memory.d, source, 0);
uint16_t word = gba->memory.d.load16(&gba->memory.d, source, &gba->cpu.cycles);
for (i = 0; i < count; ++i) {
gba->memory.d.store16(&gba->memory.d, dest + (i << 1), word, 0);
gba->memory.d.store16(&gba->memory.d, dest + (i << 1), word, &gba->cpu.cycles);
gba->board.d.processEvents(&gba->board.d);
}
}
} else {
@ -45,15 +47,17 @@ static void _CpuSet(struct GBA* gba) {
source &= 0xFFFFFFFC;
dest &= 0xFFFFFFFC;
for (i = 0; i < count; ++i) {
int32_t word = gba->memory.d.load32(&gba->memory.d, source + (i << 2), 0);
gba->memory.d.store32(&gba->memory.d, dest + (i << 2), word, 0);
int32_t word = gba->memory.d.load32(&gba->memory.d, source + (i << 2), &gba->cpu.cycles);
gba->memory.d.store32(&gba->memory.d, dest + (i << 2), word, &gba->cpu.cycles);
gba->board.d.processEvents(&gba->board.d);
}
} else {
source &= 0xFFFFFFFE;
dest &= 0xFFFFFFFE;
for (i = 0; i < count; ++i) {
uint16_t word = gba->memory.d.load16(&gba->memory.d, source + (i << 1), 0);
gba->memory.d.store16(&gba->memory.d, dest + (i << 1), word, 0);
uint16_t word = gba->memory.d.load16(&gba->memory.d, source + (i << 1), &gba->cpu.cycles);
gba->memory.d.store16(&gba->memory.d, dest + (i << 1), word, &gba->cpu.cycles);
gba->board.d.processEvents(&gba->board.d);
}
}
}
@ -64,17 +68,34 @@ static void _FastCpuSet(struct GBA* gba) {
uint32_t dest = gba->cpu.gprs[1] & 0xFFFFFFFC;
uint32_t mode = gba->cpu.gprs[2];
int count = mode & 0x000FFFFF;
int storeCycles = gba->memory.d.waitMultiple(&gba->memory.d, dest, 4);
count = ((count + 7) >> 3) << 3;
int i;
if (mode & 0x01000000) {
int32_t word = gba->memory.d.load32(&gba->memory.d, source, 0);
for (i = 0; i < count; ++i) {
gba->memory.d.store32(&gba->memory.d, dest + (i << 2), word, 0);
int32_t word = gba->memory.d.load32(&gba->memory.d, source, &gba->cpu.cycles);
for (i = 0; i < count; i += 4) {
gba->memory.d.store32(&gba->memory.d, dest + ((i + 0) << 2), word, 0);
gba->memory.d.store32(&gba->memory.d, dest + ((i + 1) << 2), word, 0);
gba->memory.d.store32(&gba->memory.d, dest + ((i + 2) << 2), word, 0);
gba->memory.d.store32(&gba->memory.d, dest + ((i + 3) << 2), word, 0);
gba->cpu.cycles += storeCycles;
gba->board.d.processEvents(&gba->board.d);
}
} else {
for (i = 0; i < count; ++i) {
int32_t word = gba->memory.d.load32(&gba->memory.d, source + (i << 2), 0);
gba->memory.d.store32(&gba->memory.d, dest + (i << 2), word, 0);
int loadCycles = gba->memory.d.waitMultiple(&gba->memory.d, source, 4);
for (i = 0; i < count; i += 4) {
int32_t word0 = gba->memory.d.load32(&gba->memory.d, source + ((i + 0) << 2), 0);
int32_t word1 = gba->memory.d.load32(&gba->memory.d, source + ((i + 1) << 2), 0);
int32_t word2 = gba->memory.d.load32(&gba->memory.d, source + ((i + 2) << 2), 0);
int32_t word3 = gba->memory.d.load32(&gba->memory.d, source + ((i + 3) << 2), 0);
gba->cpu.cycles += loadCycles;
gba->board.d.processEvents(&gba->board.d);
gba->memory.d.store32(&gba->memory.d, dest + ((i + 0) << 2), word0, 0);
gba->memory.d.store32(&gba->memory.d, dest + ((i + 1) << 2), word1, 0);
gba->memory.d.store32(&gba->memory.d, dest + ((i + 2) << 2), word2, 0);
gba->memory.d.store32(&gba->memory.d, dest + ((i + 3) << 2), word3, 0);
gba->cpu.cycles += storeCycles;
gba->board.d.processEvents(&gba->board.d);
}
}
}