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[/] [or1k/] [trunk/] [or1ksim/] [cpu/] [or1k/] [sprs.c] - Diff between revs 1529 and 1531
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| Rev 1529 |
Rev 1531 |
| Line 52... |
Line 52... |
void
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void
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mtspr(uint16_t regno, const uorreg_t value)
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mtspr(uint16_t regno, const uorreg_t value)
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{
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{
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uorreg_t prev_val;
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uorreg_t prev_val;
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regno %= MAX_SPRS;
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prev_val = cpu_state.sprs[regno];
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prev_val = cpu_state.sprs[regno];
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cpu_state.sprs[regno] = value;
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cpu_state.sprs[regno] = value;
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/* MM: Register hooks. */
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/* MM: Register hooks. */
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switch (regno) {
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switch (regno) {
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| Line 202... |
Line 201... |
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/* Get a specific SPR. */
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/* Get a specific SPR. */
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uorreg_t mfspr(const uint16_t regno)
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uorreg_t mfspr(const uint16_t regno)
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{
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{
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extern oraddr_t pcprev;
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extern oraddr_t pcprev;
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uorreg_t ret;
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ret = cpu_state.sprs[regno];
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switch (regno) {
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switch (regno) {
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case SPR_NPC:
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case SPR_NPC:
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return cpu_state.pc;
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ret = cpu_state.pc;
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case SPR_PPC:
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case SPR_PPC:
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return pcprev;
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ret = pcprev;
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case SPR_TTCR:
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case SPR_TTCR:
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return spr_read_ttcr();
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ret = spr_read_ttcr();
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default:
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default:
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/* Links to GPRS */
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/* Links to GPRS */
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if(regno >= 0x0400 && regno < 0x0420)
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if(regno >= 0x0400 && regno < 0x0420)
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return cpu_state.reg[regno - 0x0400];
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ret = cpu_state.reg[regno - 0x0400];
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else if (regno < MAX_SPRS)
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}
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return cpu_state.sprs[regno];
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}
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return ret;
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if (config.sim.verbose)
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PRINTF ("WARNING: read out of SPR range %08X\n", regno);
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return 0;
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}
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}
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/* Show status of important SPRs. */
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/* Show status of important SPRs. */
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void sprs_status(void)
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void sprs_status(void)
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{
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{
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