diff options
Diffstat (limited to 'sim/frv')
| -rw-r--r-- | sim/frv/ChangeLog | 10 | ||||
| -rw-r--r-- | sim/frv/frv-sim.h | 3 | ||||
| -rw-r--r-- | sim/frv/frv.c | 33 |
3 files changed, 38 insertions, 8 deletions
diff --git a/sim/frv/ChangeLog b/sim/frv/ChangeLog index 63c8e98..5a76eac 100644 --- a/sim/frv/ChangeLog +++ b/sim/frv/ChangeLog @@ -1,3 +1,13 @@ +2003-10-31 Dave Brolley <brolley@redhat.com> + + * frv-sim.h (REGNUM_LR): Removed. + (REGNUM_SPR_MIN,REGNUM_SPR_MAX): New macros. + * frv.c (frvbf_fetch_register): Fetch SPR registers based on + REGNUM_SPR_MIN and REGNUM_SPR_MAX. Check whether SPRs are implemented. + Return 0 for an unimplemented register. Return the length of the data + for an implemented register. + (frvbf_store_register): Ditto. + 2003-10-30 Andrew Cagney <cagney@redhat.com> * traps.c: Replace "struct symbol_cache_entry" with "struct diff --git a/sim/frv/frv-sim.h b/sim/frv/frv-sim.h index a28df49..53d131f 100644 --- a/sim/frv/frv-sim.h +++ b/sim/frv/frv-sim.h @@ -33,7 +33,8 @@ with this program; if not, write to the Free Software Foundation, Inc., #define GR_REGNUM_MAX 63 #define FR_REGNUM_MAX 127 #define PC_REGNUM 128 -#define LR_REGNUM 145 +#define SPR_REGNUM_MIN 129 +#define SPR_REGNUM_MAX (SPR_REGNUM_MIN + 4096 - 1) /* Initialization of the frv cpu. */ void frv_initialize (SIM_CPU *, SIM_DESC); 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. */ |