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Line 22... |
#include <string.h>
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#include <string.h>
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#include "arch.h"
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#include "arch.h"
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#include "sprs.h"
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#include "sprs.h"
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extern int cont_run;
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extern int cont_run; /* defined in toplevel.c */
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extern int tt_stopped; /* defined in tick.c */
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static sprword sprs[MAX_SPRS];
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static sprword sprs[MAX_SPRS];
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int temp_disable_except = 0;
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int temp_disable_except = 0;
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int audio_cnt = 0;
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static FILE *fo = 0;
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/* Set a specific SPR with a value. */
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/* Set a specific SPR with a value. */
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void mtspr(int regno, sprword value)
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void mtspr(int regno, sprword value)
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{
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{
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int ofs = regno % MAX_SPRS_PER_GRP;
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int ofs = regno % MAX_SPRS_PER_GRP;
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if (regno == 0x1234)
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/* MM: Register hooks. */
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switch (regno) {
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case 0xFFFD:
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fo = fopen ("audiosim.pcm", "wb+");
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if (!fo) printf("Cannot open audiosim.pcm\n");
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printf("Audio opened.\n");
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return;
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case 0xFFFE:
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if (!fo) printf("audiosim.pcm not opened\n");
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fputc (value & 0xFF, fo);
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if ((audio_cnt % 1024) == 0)
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printf("%i\n", audio_cnt);
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audio_cnt++;
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return;
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case 0xFFFF:
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fclose(fo);
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printf("Audio closed.\n");
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cont_run = 0;
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return;
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case SPR_TTMR:
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if (value & SPR_TTMR_M == 2) break;
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case SPR_TTCR:
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tt_stopped = 0;
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break;
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case 0x1234:
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printf("MTSPR(0x1234, %x);\n", value);
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printf("MTSPR(0x1234, %x);\n", value);
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break;
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}
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regno /= MAX_SPRS_PER_GRP;
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regno /= MAX_SPRS_PER_GRP;
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regno += ofs;
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regno += ofs;
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/* printf("mtspr(%x, %x)\n", regno, value);
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/* printf("mtspr(%x, %x)\n", regno, value);
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*/ if (regno < MAX_SPRS)
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*/ if (regno < MAX_SPRS)
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sprs[regno] = value;
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sprs[regno] = value;
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else {
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else {
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printf("\nABORT: write out of SPR range\n");
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printf("\nABORT: write out of SPR range\n");
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cont_run = 0;
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cont_run = 0;
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}
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}
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return;
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}
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}
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/* Get a specific SPR. */
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/* Get a specific SPR. */
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sprword mfspr(int regno)
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sprword mfspr(int regno)
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{
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{
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Line 87... |
regno += ofs;
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regno += ofs;
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/* MM: l.rfe, for example, temporarly disables
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/* MM: l.rfe, for example, temporarly disables
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exceptions. We will make it appear as SR bit
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exceptions. We will make it appear as SR bit
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is set. */
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is set. */
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/*if (regno == SPR_SR && temp_disable_except > 0)
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if (regno == SPR_SR && temp_disable_except > 0)
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return sprs[regno] | SPR_SR_EXR;*/
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return sprs[regno] | SPR_SR_EXR;
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/* printf("mfspr(%x)%x\n", regno, sprs[regno]);
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/* printf("mfspr(%x)%x\n", regno, sprs[regno]); */
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*/ if (regno < MAX_SPRS)
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if (regno < MAX_SPRS)
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return sprs[regno];
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return sprs[regno];
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else {
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else {
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printf("\nABORT: read out of SPR range\n");
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printf("\nABORT: read out of SPR range\n");
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cont_run = 0;
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cont_run = 0;
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}
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}
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