diff options
Diffstat (limited to 'sim/frv/frv.c')
| -rw-r--r-- | sim/frv/frv.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/sim/frv/frv.c b/sim/frv/frv.c index 7f48256..cc71eca 100644 --- a/sim/frv/frv.c +++ b/sim/frv/frv.c @@ -44,12 +44,22 @@ frvbf_fetch_register (SIM_CPU *current_cpu, int rn, unsigned char *buf, int len) SETTSI (buf, GET_H_FR (rn - GR_REGNUM_MAX - 1)); else if (rn == PC_REGNUM) SETTSI (buf, GET_H_PC ()); - else if (rn == LR_REGNUM) - SETTSI (buf, GET_H_SPR (H_SPR_LR)); + else if (rn >= SPR_REGNUM_MIN && rn <= SPR_REGNUM_MAX) + { + /* Make sure the register is implemented. */ + FRV_REGISTER_CONTROL *control = CPU_REGISTER_CONTROL (current_cpu); + int spr = rn - SPR_REGNUM_MIN; + if (! control->spr[spr].implemented) + return 0; + SETTSI (buf, GET_H_SPR (spr)); + } else - SETTSI (buf, 0xdeadbeef); + { + SETTSI (buf, 0xdeadbeef); + return 0; + } - return -1; + return len; } /* The contents of BUF are in target byte order. */ @@ -63,10 +73,19 @@ frvbf_store_register (SIM_CPU *current_cpu, int rn, unsigned char *buf, int len) SET_H_FR (rn - GR_REGNUM_MAX - 1, GETTSI (buf)); else if (rn == PC_REGNUM) SET_H_PC (GETTSI (buf)); - else if (rn == LR_REGNUM) - SET_H_SPR (H_SPR_LR, GETTSI (buf)); + else if (rn >= SPR_REGNUM_MIN && rn <= SPR_REGNUM_MAX) + { + /* Make sure the register is implemented. */ + FRV_REGISTER_CONTROL *control = CPU_REGISTER_CONTROL (current_cpu); + int spr = rn - SPR_REGNUM_MIN; + if (! control->spr[spr].implemented) + return 0; + SET_H_SPR (spr, GETTSI (buf)); + } + else + return 0; - return -1; + return len; } /* Cover fns to access the general registers. */ |