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[/] [or1k/] [tags/] [stable_0_2_0_rc2/] [or1ksim/] [cpu/] [or1k/] [sprs.c] - Diff between revs 1529 and 1531

Rev 1529	Rev 1531
Line 52...	Line 52...
`void`	`void`
`mtspr(uint16_t regno, const uorreg_t value)`	`mtspr(uint16_t regno, const uorreg_t value)`
`{`	`{`
`uorreg_t prev_val;`	`uorreg_t prev_val;`

`regno %= MAX_SPRS;`
`prev_val = cpu_state.sprs[regno];`	`prev_val = cpu_state.sprs[regno];`
`cpu_state.sprs[regno] = value;`	`cpu_state.sprs[regno] = value;`

`/* MM: Register hooks. */`	`/* MM: Register hooks. */`
`switch (regno) {`	`switch (regno) {`
Line 202...	Line 201...

`/* Get a specific SPR. */`	`/* Get a specific SPR. */`
`uorreg_t mfspr(const uint16_t regno)`	`uorreg_t mfspr(const uint16_t regno)`
`{`	`{`
`extern oraddr_t pcprev;`	`extern oraddr_t pcprev;`
	`uorreg_t ret;`

	`ret = cpu_state.sprs[regno];`

`switch (regno) {`	`switch (regno) {`
`case SPR_NPC:`	`case SPR_NPC:`
`return cpu_state.pc;`	`ret = cpu_state.pc;`
`case SPR_PPC:`	`case SPR_PPC:`
`return pcprev;`	`ret = pcprev;`
`case SPR_TTCR:`	`case SPR_TTCR:`
`return spr_read_ttcr();`	`ret = spr_read_ttcr();`
`default:`	`default:`
`/* Links to GPRS */`	`/* Links to GPRS */`
`if(regno >= 0x0400 && regno < 0x0420)`	`if(regno >= 0x0400 && regno < 0x0420)`
`return cpu_state.reg[regno - 0x0400];`	`ret = cpu_state.reg[regno - 0x0400];`
`else if (regno < MAX_SPRS)`	`}`
`return cpu_state.sprs[regno];`
`}`	`return ret;`
`if (config.sim.verbose)`
`PRINTF ("WARNING: read out of SPR range %08X\n", regno);`
`return 0;`
`}`	`}`

`/* Show status of important SPRs. */`	`/* Show status of important SPRs. */`
`void sprs_status(void)`	`void sprs_status(void)`
`{`	`{`