URL
https://opencores.org/ocsvn/or1k/or1k/trunk
[/] [or1k/] [trunk/] [or1ksim/] [cpu/] [or1k/] [sprs.h] - Diff between revs 1508 and 1532
Go to most recent revision |
Show entire file |
Details |
Blame |
View Log
| Rev 1508 |
Rev 1532 |
| Line 19... |
Line 19... |
|
|
/* Prototypes */
|
/* Prototypes */
|
void mtspr(uint16_t regno, const uorreg_t value);
|
void mtspr(uint16_t regno, const uorreg_t value);
|
uorreg_t mfspr(const uint16_t regno);
|
uorreg_t mfspr(const uint16_t regno);
|
void sprs_status(void);
|
void sprs_status(void);
|
|
char *dump_spr(uint16_t spr, uorreg_t spr_val);
|
|
|
/* Set specific SPR bit(s) identified by mask. */
|
|
static inline void
|
|
setsprbits(const int regno, const unsigned long mask, const unsigned long value)
|
|
{
|
|
uorreg_t regvalue = cpu_state.sprs[regno];
|
|
uorreg_t shifted = 0x0;
|
|
int m, v = 0;
|
|
|
|
/* m counts bits in valuemask */
|
|
/* v counts bits in value */
|
|
for (m = 0; m < 32; m++)
|
|
if ((mask >> m) & 0x1) {
|
|
shifted |= ((value >> v) & 0x1) << m;
|
|
v++;
|
|
}
|
|
|
|
/* PRINTF("oldvalue %x setsprbits(%x, %x, %x) shifted %x", regvalue, regno, mask, value, shifted); */
|
|
cpu_state.sprs[regno] = (regvalue & ~mask) | shifted;
|
|
}
|
|
|
|
/* Get specific SPR bit(s) identified by mask. */
|
|
static inline unsigned long
|
|
getsprbits(const int regno, const unsigned long mask)
|
|
{
|
|
uorreg_t regvalue = cpu_state.sprs[regno];
|
|
uorreg_t shifted = 0x0;
|
|
int m, v = 0;
|
|
|
|
/* m counts bits in valuemask */
|
|
/* v counts bits in regvalue */
|
|
for (m = 0; m < 32; m++)
|
|
if ((mask >> m) & 0x1) {
|
|
shifted |= ((regvalue >> m) & 0x1) << v;
|
|
v++;
|
|
}
|
|
|
|
return shifted;
|
|
}
|
|
|
|
|
|
No newline at end of file
|
No newline at end of file
|
© copyright 1999-2024
OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.