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Add support for the fpscr register for Power / PowerPC targets.

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This commit is contained in:
Kevin Buettner
2002-04-11 19:08:56 +00:00
parent 943c9c25d6
commit e3f36dbd47
5 changed files with 54 additions and 8 deletions
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29
gdb/ppc-linux-nat.c
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@@ -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));
}