mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 10:19:47 -04:00
Matthew Stanley
67 lines
2.6 KiB
C
67 lines
2.6 KiB
C
#include "psx_memory.h"
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#include <stdio.h>
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/* The live geometry normally lives in memory.c; this test owns it so each
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* build of the test pins one geometry the way memory_init() would. */
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uint32_t g_psx_ram_size = PSX_MAIN_RAM_RETAIL_BYTES;
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uint32_t g_psx_ram_mask = PSX_MAIN_RAM_RETAIL_BYTES - 1u;
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static int failures;
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static void check(int condition, const char *name) {
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if (condition) {
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printf("PASS %s\n", name);
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} else {
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fprintf(stderr, "FAIL %s\n", name);
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failures++;
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}
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}
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int main(void) {
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uint32_t off = 0xFFFFFFFFu;
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#if defined(PSX_MEMORY_GEOMETRY_TEST_EXPANDED)
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/* What the 8 MB mod leaves behind after memory_init(). */
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g_psx_ram_size = PSX_MAIN_RAM_EXPANDED_BYTES;
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g_psx_ram_mask = PSX_MAIN_RAM_EXPANDED_BYTES - 1u;
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#endif
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check(psx_ram_resolve(0x80000000u, 4u, &off) && off == 0u,
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"KSEG0 aliases physical RAM");
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check(psx_ram_resolve(0xA0000100u, 4u, &off) && off == 0x100u,
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"KSEG1 aliases physical RAM");
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check(!psx_ram_resolve(0x00800000u, 4u, &off),
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"first byte beyond DRAM decode is rejected");
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check(!psx_ram_resolve(0x1F801000u, 4u, &off),
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"MMIO is never mistaken for DRAM");
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check(!psx_ram_resolve(psx_ram_live_bytes() - 2u, 4u, &off),
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"cross-geometry word is rejected");
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#if !defined(PSX_MEMORY_GEOMETRY_TEST_EXPANDED)
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check(psx_ram_canonical_offset(0x80612340u) == 0x00012340u,
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"retail canonicalization folds KSEG0 mirrors");
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check(psx_ram_resolve(0x00212340u, 4u, &off) && off == 0x00012340u,
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"retail geometry folds the second mirror");
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check(psx_ram_resolve(0x807FFFFCu, 4u, &off) && off == 0x001FFFFCu,
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"retail geometry folds the fourth mirror top");
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check(psx_ram_map_read(0x80780000u) == 0x00180000u,
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"retail bytes of a fourth-mirror PC are the folded DRAM");
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check(psx_ram_live_bytes() == PSX_MAIN_RAM_RETAIL_BYTES,
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"retail live size is 2 MiB");
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#else
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check(psx_ram_canonical_offset(0x80612340u) == 0x00612340u,
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"expanded canonicalization preserves all decoded address bits");
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check(psx_ram_resolve(0x00212340u, 4u, &off) && off == 0x00212340u,
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"expanded geometry uniquely decodes the second bank");
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check(psx_ram_resolve(0x807FFFFCu, 4u, &off) && off == 0x007FFFFCu,
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"expanded geometry uniquely decodes the eighth MiB top");
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check(psx_ram_map_read(0x80780000u) == 0x00780000u,
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"expanded bytes of a high-bank PC stay in the high bank");
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check(psx_ram_live_bytes() == PSX_MAIN_RAM_EXPANDED_BYTES,
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"expanded live size is 8 MiB");
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#endif
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return failures ? 1 : 0;
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}
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