diff options
Diffstat (limited to 'gdb/ppc-linux-nat.c')
| -rw-r--r-- | gdb/ppc-linux-nat.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c index e4bb868..25616c0 100644 --- a/gdb/ppc-linux-nat.c +++ b/gdb/ppc-linux-nat.c @@ -149,6 +149,8 @@ ppc_register_u_addr (int regno) u_addr = PT_MQ * 4; if (regno == tdep->ppc_ps_regnum) u_addr = PT_MSR * 4; + if (regno == tdep->ppc_fpscr_regnum) + u_addr = PT_FPSCR * 4; return u_addr; } @@ -290,8 +292,10 @@ fetch_ppc_registers (int tid) int i; struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - for (i = 0; i <= tdep->ppc_mq_regnum; i++) + for (i = 0; i <= tdep->ppc_fpscr_regnum; i++) fetch_register (tid, i); + if (tdep->ppc_mq_regnum != -1) + fetch_register (tid, tdep->ppc_mq_regnum); if (have_ptrace_getvrregs) if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1) fetch_altivec_registers (tid); @@ -376,6 +380,14 @@ store_register (int tid, int regno) ptrace (PT_WRITE_U, tid, (PTRACE_ARG3_TYPE) regaddr, *(PTRACE_XFER_TYPE *) & buf[i]); regaddr += sizeof (PTRACE_XFER_TYPE); + + if (errno == EIO + && regno == gdbarch_tdep (current_gdbarch)->ppc_fpscr_regnum) + { + /* Some older kernel versions don't allow fpscr to be written. */ + continue; + } + if (errno != 0) { sprintf (mess, "writing register %s (#%d)", @@ -435,8 +447,10 @@ store_ppc_registers (int tid) int i; struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - for (i = 0; i <= tdep->ppc_mq_regnum; i++) + for (i = 0; i <= tdep->ppc_fpscr_regnum; i++) store_register (tid, i); + if (tdep->ppc_mq_regnum != -1) + store_register (tid, tdep->ppc_mq_regnum); if (have_ptrace_getvrregs) if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1) store_altivec_registers (tid); @@ -473,7 +487,8 @@ supply_gregset (gdb_gregset_t *gregsetp) supply_register (tdep->ppc_cr_regnum, (char *) (regp + PT_CCR)); supply_register (tdep->ppc_xer_regnum, (char *) (regp + PT_XER)); supply_register (tdep->ppc_ctr_regnum, (char *) (regp + PT_CTR)); - supply_register (tdep->ppc_mq_regnum, (char *) (regp + PT_MQ)); + if (tdep->ppc_mq_regnum != -1) + supply_register (tdep->ppc_mq_regnum, (char *) (regp + PT_MQ)); supply_register (tdep->ppc_ps_regnum, (char *) (regp + PT_MSR)); } @@ -500,7 +515,8 @@ fill_gregset (gdb_gregset_t *gregsetp, int regno) regcache_collect (tdep->ppc_xer_regnum, regp + PT_XER); if ((regno == -1) || regno == tdep->ppc_ctr_regnum) regcache_collect (tdep->ppc_ctr_regnum, regp + PT_CTR); - if ((regno == -1) || regno == tdep->ppc_mq_regnum) + if (((regno == -1) || regno == tdep->ppc_mq_regnum) + && (tdep->ppc_mq_regnum != -1)) regcache_collect (tdep->ppc_mq_regnum, regp + PT_MQ); if ((regno == -1) || regno == tdep->ppc_ps_regnum) regcache_collect (tdep->ppc_ps_regnum, regp + PT_MSR); @@ -510,9 +526,11 @@ void supply_fpregset (gdb_fpregset_t * fpregsetp) { int regi; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); for (regi = 0; regi < 32; regi++) supply_register (FP0_REGNUM + regi, (char *) (*fpregsetp + regi)); + supply_register (tdep->ppc_fpscr_regnum, (char *) (*fpregsetp + 32)); } /* Given a pointer to a floating point register set in /proc format @@ -523,10 +541,13 @@ void fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) { int regi; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); for (regi = 0; regi < 32; regi++) { if ((regno == -1) || (regno == FP0_REGNUM + regi)) regcache_collect (FP0_REGNUM + regi, (char *) (*fpregsetp + regi)); } + if ((regno == -1) || regno == tdep->ppc_fpscr_regnum) + regcache_collect (tdep->ppc_fpscr_regnum, (char *) (*fpregsetp + regi)); } |