mirror of
https://github.com/RetroPortingToolKit/psxrecomp
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Pegasus
3bd62b3099
Rebased onto upstream after #362: the Ape Escape card-repair hunks are
dropped with the removed block, and the pace walk keeps upstream's uncapped
deadline consumption plus the source ACK-pulse edge.
(cherry picked from commit 8235a7700f)
37 lines
2.0 KiB
C
37 lines
2.0 KiB
C
#include "psx_icache.h"
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#include "source_cpu_block_bound.h"
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#include <assert.h>
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#include <stdio.h>
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uint64_t psx_cycle_count,psx_next_service_cycle=1000000;
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uint32_t g_psx_cyc_batch,g_psx_cyc_batch_limit;
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int g_psx_cyc_bb_defer,psx_in_device_service,g_event_step_conservative;
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int g_ls_replay_active;
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uint32_t *g_psx_cyc_local_acc;
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uint64_t psx_get_cycle_count(void){return psx_cycle_count+g_psx_cyc_batch+(g_psx_cyc_local_acc?*g_psx_cyc_local_acc:0);}
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static uint8_t ram[0x200000];uint8_t *g_psx_ram=ram;
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void psx_devices_service_to_now(void){assert(0);}
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void psx_advance_cycles_slow(uint32_t n){psx_cycle_count+=n;}
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uint32_t psx_read_word(uint32_t addr){assert(addr==0xfffe0130);return 0x800;}
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uint32_t psx_gte_cmd_latency(uint32_t cmd){(void)cmd;assert(0);return 0;}
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int main(void) {
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/* Independently execute a five-instruction ALU/branch-slot timing path.
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* Entry at offset8 crosses a cold cache line. Seven clocks to a future
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* IRQ is beyond the old count5 but lies inside the real block17. */
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const uint32_t code[]={0x00a63823,0x000212c3,0x3046001f,0x14c00002,0};
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memcpy(ram+0x508,code,sizeof(code));
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for(unsigned warm=0;warm<2;warm++) {
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CPUState cpu={0};cpu.ld_which_t=32;cpu.read_fudge=32;
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psx_cycle_count=0;psx_icache_reset();g_psx_icache_active=1;
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if(warm)for(unsigned i=0;i<8;i++)g_psx_icache_tv[(0x500>>2)+i]=0x80000500+4*i;
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uint64_t before=psx_get_cycle_count();
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uint32_t bound=source_cpu_block_bound(&cpu,0x80000508,5,7);
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assert(psx_get_cycle_count()==before);
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for(unsigned i=0;i<5;i++){psx_icache_fetch_interp(&cpu,0x80000508+4*i);psx_cyc_step(&cpu,0);}
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psx_cyc_batch_flush();
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assert(psx_get_cycle_count()==(warm?5u:17u));
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assert(bound>=psx_get_cycle_count());
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assert(warm || (5u<7u && 7u<=bound && 7u<psx_get_cycle_count()));
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printf("PASS %s: actual=%llu upper=%u; selection adds no cycles\n",warm?"warm":"cold",(unsigned long long)psx_get_cycle_count(),bound);
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}
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}
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