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* ppc-tdep.h (struct gdbarch_tdep): Change definition of

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ppc_fp0_regnum and ppc_fpscr_regnum: if they are -1, then this
processor variant lacks those registers.
(ppc_floating_point_unit_p): Change description to make it clear
that this returns info about the ISA, not the ABI.
* rs6000-tdep.c (ppc_floating_point_unit_p): Decide whether to
return true or false by checking tdep->ppc_fp0_regnum and
tdep->ppc_fpscr_regnum.  The original code replicated the BFD
arch/mach switching done in rs6000_gdbarch_init; it's better to
keep that logic there, and just check the results here.
(rs6000_gdbarch_init): On the E500, set tdep->ppc_fp0_regnum and
tdep->ppc_fpscr_regnum to -1 to indicate that we have no
floating-point registers.
(ppc_supply_fpregset, ppc_collect_fpregset)
(rs6000_push_dummy_call, rs6000_extract_return_value)
(rs6000_store_return_value): Assert that we have floating-point
registers.
(rs6000_dwarf2_stab_reg_to_regnum): Add FIXME.
(rs6000_frame_cache): Don't note the locations at which
floating-point registers were saved if we have no fprs.
* aix-thread.c (supply_fprs, fill_fprs): Assert that we have FP
registers.
(fetch_regs_user_thread, fetch_regs_kernel_thread)
(store_regs_user_thread, store_regs_kernel_thread): Only call
supply_fprs / fill_fprs if we actually have floating-point
registers.
(special_register_p): Check ppc_fpscr_regnum before matching
against it.
(supply_sprs64, supply_sprs32, fill_sprs64, fill_sprs32): Don't
supply / collect fpscr if we don't have it.
* ppc-bdm.c: #include "gdb_assert.h".
(bdm_ppc_fetch_registers, bdm_ppc_store_registers): Assert that we
have floating-point registers, since I can't test this code on
FP-free systems to adapt it.
* ppc-linux-nat.c (ppc_register_u_addr): Don't match against the
fpscr and floating point register numbers if they don't exist.
(fetch_register): Assert that we have floating-point registers
before we reach the code that handles them.
(store_register): Same.  And use tdep instead of calling
gdbarch_tdep again.
(fill_fpregset): Don't try to collect FP registers and fpscr if we
don't have them.
(ppc_linux_sigtramp_cache): Don't record the saved locations of
fprs and fpscr if we don't have them.
(ppc_linux_supply_fpregset): Don't supply fp regs and fpscr if we
don't have them.
* ppcnbsd-nat.c: #include "gdb_assert.h".
(getfpregs_supplies): Assert that we have floating-point registers.
* ppcnbsd-tdep.c (ppcnbsd_supply_fpreg, ppcnbsd_fill_fpreg): Same.
* ppcobsd-tdep.c: #include "gdb_assert.h".
(ppcobsd_supply_gregset, ppcobsd_collect_gregset): Assert that we
have floating-point registers.
* rs6000-nat.c (regmap): Don't match against the fpscr and
floating point register numbers if they don't exist.
(fetch_inferior_registers, store_inferior_registers,
fetch_core_registers): Only fetch / store / supply the
floating-point registers and the fpscr if we have them.
* Makefile.in (ppc-bdm.o, ppc-linux-nat.o, ppcnbsd-nat.o)
(ppcobsd-tdep.o): Update dependencies.
This commit is contained in:
Jim Blandy
2004-05-10 17:07:02 +00:00
parent 2e56e9c16f
commit c4143af614
12 changed files with 263 additions and 65 deletions
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42
gdb/rs6000-nat.c
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@@ -159,7 +159,8 @@ regmap (int regno, int *isfloat)
if (tdep->ppc_gp0_regnum <= regno
&& regno < tdep->ppc_gp0_regnum + ppc_num_gprs)
return regno;
else if (tdep->ppc_fp0_regnum <= regno
else if (tdep->ppc_fp0_regnum >= 0
&& tdep->ppc_fp0_regnum <= regno
&& regno < tdep->ppc_fp0_regnum + ppc_num_fprs)
{
*isfloat = 1;
@@ -177,7 +178,8 @@ regmap (int regno, int *isfloat)
return CTR;
else if (regno == tdep->ppc_xer_regnum)
return XER;
else if (regno == tdep->ppc_fpscr_regnum)
else if (tdep->ppc_fpscr_regnum >= 0
&& regno == tdep->ppc_fpscr_regnum)
return FPSCR;
else if (tdep->ppc_mq_regnum >= 0 && regno == tdep->ppc_mq_regnum)
return MQ;
@@ -359,8 +361,9 @@ fetch_inferior_registers (int regno)
}
/* Read general purpose floating point registers. */
for (regno = 0; regno < ppc_num_fprs; regno++)
fetch_register (tdep->ppc_fp0_regnum + regno);
if (tdep->ppc_fp0_regnum >= 0)
for (regno = 0; regno < ppc_num_fprs; regno++)
fetch_register (tdep->ppc_fp0_regnum + regno);
/* Read special registers. */
fetch_register (PC_REGNUM);
@@ -369,7 +372,8 @@ fetch_inferior_registers (int regno)
fetch_register (tdep->ppc_lr_regnum);
fetch_register (tdep->ppc_ctr_regnum);
fetch_register (tdep->ppc_xer_regnum);
fetch_register (tdep->ppc_fpscr_regnum);
if (tdep->ppc_fpscr_regnum >= 0)
fetch_register (tdep->ppc_fpscr_regnum);
if (tdep->ppc_mq_regnum >= 0)
fetch_register (tdep->ppc_mq_regnum);
}
@@ -398,8 +402,9 @@ store_inferior_registers (int regno)
}
/* Write floating point registers. */
for (regno = 0; regno < ppc_num_fprs; regno++)
store_register (tdep->ppc_fp0_regnum + regno);
if (tdep->ppc_fp0_regnum >= 0)
for (regno = 0; regno < ppc_num_fprs; regno++)
store_register (tdep->ppc_fp0_regnum + regno);
/* Write special registers. */
store_register (PC_REGNUM);
@@ -408,7 +413,8 @@ store_inferior_registers (int regno)
store_register (tdep->ppc_lr_regnum);
store_register (tdep->ppc_ctr_regnum);
store_register (tdep->ppc_xer_regnum);
store_register (tdep->ppc_fpscr_regnum);
if (tdep->ppc_fpscr_regnum >= 0)
store_register (tdep->ppc_fpscr_regnum);
if (tdep->ppc_mq_regnum >= 0)
store_register (tdep->ppc_mq_regnum);
}
@@ -583,9 +589,10 @@ fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
for (regi = 0; regi < 32; regi++)
supply_register (regi, (char *) &regs->r64.gpr[regi]);
for (regi = 0; regi < 32; regi++)
supply_register (tdep->ppc_fp0_regnum + regi,
(char *) &regs->r64.fpr[regi]);
if (tdep->ppc_fp0_regnum >= 0)
for (regi = 0; regi < 32; regi++)
supply_register (tdep->ppc_fp0_regnum + regi,
(char *) &regs->r64.fpr[regi]);
supply_register (PC_REGNUM, (char *) &regs->r64.iar);
supply_register (tdep->ppc_ps_regnum, (char *) &regs->r64.msr);
@@ -593,16 +600,18 @@ fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
supply_register (tdep->ppc_lr_regnum, (char *) &regs->r64.lr);
supply_register (tdep->ppc_ctr_regnum, (char *) &regs->r64.ctr);
supply_register (tdep->ppc_xer_regnum, (char *) &regs->r64.xer);
supply_register (tdep->ppc_fpscr_regnum, (char *) &regs->r64.fpscr);
if (tdep->ppc_fpscr_regnum >= 0)
supply_register (tdep->ppc_fpscr_regnum, (char *) &regs->r64.fpscr);
}
else
{
for (regi = 0; regi < 32; regi++)
supply_register (regi, (char *) &regs->r32.gpr[regi]);
for (regi = 0; regi < 32; regi++)
supply_register (tdep->ppc_fp0_regnum + regi,
(char *) &regs->r32.fpr[regi]);
if (tdep->ppc_fp0_regnum >= 0)
for (regi = 0; regi < 32; regi++)
supply_register (tdep->ppc_fp0_regnum + regi,
(char *) &regs->r32.fpr[regi]);
supply_register (PC_REGNUM, (char *) &regs->r32.iar);
supply_register (tdep->ppc_ps_regnum, (char *) &regs->r32.msr);
@@ -610,7 +619,8 @@ fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
supply_register (tdep->ppc_lr_regnum, (char *) &regs->r32.lr);
supply_register (tdep->ppc_ctr_regnum, (char *) &regs->r32.ctr);
supply_register (tdep->ppc_xer_regnum, (char *) &regs->r32.xer);
supply_register (tdep->ppc_fpscr_regnum, (char *) &regs->r32.fpscr);
if (tdep->ppc_fpscr_regnum >= 0)
supply_register (tdep->ppc_fpscr_regnum, (char *) &regs->r32.fpscr);
if (tdep->ppc_mq_regnum >= 0)
supply_register (tdep->ppc_mq_regnum, (char *) &regs->r32.mq);
}