diff options
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/erc32/ChangeLog | 9 | ||||
| -rw-r--r-- | sim/erc32/erc32.c | 28 | ||||
| -rw-r--r-- | sim/erc32/interf.c | 5 | ||||
| -rw-r--r-- | sim/erc32/sis.c | 8 | ||||
| -rw-r--r-- | sim/erc32/sis.h | 2 |
5 files changed, 42 insertions, 10 deletions
diff --git a/sim/erc32/ChangeLog b/sim/erc32/ChangeLog index 36fcbf4..1150e1c 100644 --- a/sim/erc32/ChangeLog +++ b/sim/erc32/ChangeLog @@ -1,3 +1,12 @@ +2015-03-28 Jiri Gaisler <jiri@gaisler.se> + + * erc32.c (memory_iread): New function to fetch instructions. + (memory_read): Print message in verbose mode. + * interf.c (run_sim): Use memory_iread. + * sis.c (run_sim): As above. + * sis.h (memory_iread): New prototype. + (sregs): Declare. + 2015-03-28 Mike Frysinger <vapier@gentoo.org> * erc32.c (mec_read): Delete parenthesis around return statement. diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c index 740d778..7f24fb0 100644 --- a/sim/erc32/erc32.c +++ b/sim/erc32/erc32.c @@ -1648,6 +1648,31 @@ store_bytes (mem, data, sz) /* Memory emulation */ int +memory_iread (uint32 addr, uint32 *data, int32 *ws) +{ + uint32 asi; + if ((addr >= mem_ramstart) && (addr < (mem_ramstart + mem_ramsz))) { + memcpy (data, &ramb[addr & mem_rammask & ~3], 4); + *ws = mem_ramr_ws; + return 0; + } else if (addr < mem_romsz) { + memcpy (data, &romb[addr & ~3], 4); + *ws = mem_romr_ws; + return 0; + } + + if (sis_verbose) + printf ("Memory exception at %x (illegal address)\n", addr); + if (sregs.psr & 0x080) + asi = 9; + else + asi = 8; + set_sfsr (UIMP_ACC, addr, asi, 1); + *ws = MEM_EX_WS; + return 1; +} + +int memory_read(asi, addr, data, sz, ws) int32 asi; uint32 addr; @@ -1712,7 +1737,8 @@ memory_read(asi, addr, data, sz, ws) } - printf("Memory exception at %x (illegal address)\n", addr); + if (sis_verbose) + printf ("Memory exception at %x (illegal address)\n", addr); set_sfsr(UIMP_ACC, addr, asi, 1); *ws = MEM_EX_WS; return 1; diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c index f3764f1..59fb635 100644 --- a/sim/erc32/interf.c +++ b/sim/erc32/interf.c @@ -95,9 +95,8 @@ run_sim(sregs, icount, dis) if (sregs->pc == 0 || sregs->npc == 0) printf ("bogus pc or npc\n"); #endif - mexc = memory_read(sregs->asi, sregs->pc, &sregs->inst, - 2, &sregs->hold); -#if 1 /* DELETE ME! for debugging purposes only */ + mexc = memory_iread (sregs->pc, &sregs->inst, &sregs->hold); +#if 0 /* DELETE ME! for debugging purposes only */ if (sis_verbose > 2) printf("pc %x, np %x, sp %x, fp %x, wm %x, cw %x, i %08x\n", sregs->pc, sregs->npc, diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c index c13b246..6259067 100644 --- a/sim/erc32/sis.c +++ b/sim/erc32/sis.c @@ -75,7 +75,7 @@ run_sim(sregs, icount, dis) uint64 icount; int dis; { - int irq, mexc, deb, asi; + int irq, mexc, deb; sregs->starttime = get_time(); init_stdio(); @@ -84,11 +84,7 @@ run_sim(sregs, icount, dis) irq = 0; while (icount > 0) { - if (sregs->psr & 0x080) - asi = 9; - else - asi = 8; - mexc = memory_read(asi, sregs->pc, &sregs->inst, 2, &sregs->hold); + mexc = memory_iread (sregs->pc, &sregs->inst, &sregs->hold); sregs->icnt = 1; if (sregs->annul) { sregs->annul = 0; diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h index 74466ae..d21bf49 100644 --- a/sim/erc32/sis.h +++ b/sim/erc32/sis.h @@ -169,6 +169,7 @@ extern void sim_halt (void); extern void exit_sim (void); extern void init_stdio (void); extern void restore_stdio (void); +extern int memory_iread (uint32 addr, uint32 *data, int32 *ws); extern int memory_read (int32 asi, uint32 addr, uint32 *data, int32 sz, int32 *ws); extern int memory_write (int32 asi, uint32 addr, uint32 *data, @@ -179,6 +180,7 @@ extern int sis_memory_read (uint32 addr, char *data, uint32 length); /* func.c */ +extern struct pstate sregs; extern void set_regi (struct pstate *sregs, int32 reg, uint32 rval); extern void get_regi (struct pstate *sregs, int32 reg, char *buf); |