mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 02:11:36 -04:00
Matthew Stanley
65 lines
2.9 KiB
C
65 lines
2.9 KiB
C
#include "mod_memory.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
static int failures;
|
|
|
|
static void check(int condition, const char *name) {
|
|
if (condition) {
|
|
printf("PASS %s\n", name);
|
|
} else {
|
|
fprintf(stderr, "FAIL %s\n", name);
|
|
failures++;
|
|
}
|
|
}
|
|
|
|
int main(void) {
|
|
uint32_t off = 0;
|
|
uint32_t base = PSX_MOD_GPU_DMA_APERTURE_BASE;
|
|
uint32_t size = PSX_MOD_GPU_DMA_APERTURE_SIZE;
|
|
uint32_t aliases[] = {0x1FC00000u, 0x9FC00000u, 0xBFC00000u,
|
|
0x1F000000u, 0x9F000000u, 0x1F801810u,
|
|
0xBF801810u, 0x1EFFFFFFu};
|
|
unsigned i;
|
|
|
|
check(psx_mod_gpu_dma_resolve_address_for(base + 0x1234u, 0u) ==
|
|
((base + 0x1234u) & 0x001FFFFCu),
|
|
"unallocated aperture preserves retail 2 MiB folding");
|
|
check(psx_mod_gpu_dma_resolve_address_for(0x80000000u + base + 0x1234u, 0x20000u) ==
|
|
base + 0x1234u,
|
|
"allocated KSEG0 aperture pointer survives 24-bit DMA");
|
|
check(psx_mod_gpu_dma_resolve_address_for(base + 0x30000u, 0x20000u) ==
|
|
((base + 0x30000u) & 0x001FFFFCu),
|
|
"unallocated aperture tail remains folded");
|
|
check(psx_mod_gpu_dma_resolve_address_for(0x001ABCDEu, 0x20000u) ==
|
|
0x001ABCDCu,
|
|
"ordinary main RAM remains word-aligned and unchanged");
|
|
check(psx_mod_gpu_dma_aperture_offset_for(
|
|
base + 0x1FFFCu, 4u, 0x20000u, &off) &&
|
|
off == 0x1FFFCu,
|
|
"last allocated aperture word is accessible");
|
|
check(!psx_mod_gpu_dma_aperture_offset_for(
|
|
base + 0x20000u, 4u, 0x20000u, &off),
|
|
"first unallocated aperture word is inaccessible");
|
|
check(!psx_mod_gpu_dma_aperture_offset_for(
|
|
0x00FFFFFCu, 8u, PSX_MOD_GPU_DMA_APERTURE_SIZE, &off),
|
|
"cross-boundary access is rejected");
|
|
for (i = 0; i < sizeof(aliases) / sizeof(aliases[0]); ++i)
|
|
check(!psx_mod_gpu_dma_aperture_offset_for(aliases[i], 4u, size, &off),
|
|
"CPU BIOS/expansion/MMIO addresses cannot alias DMA storage");
|
|
check(psx_mod_gpu_dma_aperture_offset_for(0xA0000000u + base, 4u, size, &off)
|
|
&& off == 0u, "KSEG1 CPU aperture alias resolves correctly");
|
|
check(psx_mod_gpu_dma_aperture_offset_for(base + size - 4u, 4u, size, &off)
|
|
&& off == size - 4u, "last word of full enhancement aperture is accessible");
|
|
check(!psx_mod_gpu_dma_aperture_offset_for(base - 4u, 4u, size, &off),
|
|
"word before aperture is rejected");
|
|
check(!psx_mod_gpu_dma_aperture_offset_for(base + size, 4u, size, &off),
|
|
"word after aperture is rejected");
|
|
check(!psx_mod_gpu_dma_aperture_offset_for(base, 4u, size + 4u, &off),
|
|
"invalid allocated size is rejected");
|
|
check(psx_mod_gpu_dma_resolve_address_for(base + size - 4u, size) ==
|
|
base + size - 4u, "full aperture DMA tag keeps its high address bits");
|
|
|
|
return failures ? 1 : 0;
|
|
}
|