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* rs6000-tdep.c (rs6000_dwarf2_stab_reg_to_regnum): New, unified

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function for register numbers on all the rs6000-derived targets.
(rs6000_gdbarch_init): Don't register a separate
gdbarch_dwarf2_reg_to_regnum function for the E500.  Use
rs6000_dwarf2_stab_reg_to_regnum for both Dwarf 2 and stabs on all
variants.
This commit is contained in:
Jim Blandy 2004-04-01 21:00:59 +00:00
parent d40d2c921c
commit 9f74450152
2 changed files with 47 additions and 35 deletions
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7
gdb/ChangeLog
View file

@ -1,5 +1,12 @@
2004-04-01 Jim Blandy <jimb@redhat.com>
* rs6000-tdep.c (rs6000_dwarf2_stab_reg_to_regnum): New, unified
function for register numbers on all the rs6000-derived targets.
(rs6000_gdbarch_init): Don't register a separate
gdbarch_dwarf2_reg_to_regnum function for the E500. Use
rs6000_dwarf2_stab_reg_to_regnum for both Dwarf 2 and stabs on all
variants.
* i386-tdep.c: Add FIXME regarding STABS vs. Dwarf 2 register
numbering.

75
gdb/rs6000-tdep.c
View file

@ -1556,42 +1556,47 @@ e500_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
}
}
/* Convert a dwarf2 register number to a gdb REGNUM. */
/* Convert a dbx stab or Dwarf 2 register number (from `r'
declaration) to a gdb REGNUM. */
static int
e500_dwarf2_reg_to_regnum (int num)
rs6000_dwarf2_stab_reg_to_regnum (int num)
{
int regnum;
if (0 <= num && num <= 31)
return num + gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum;
else
return num;
}
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
/* Convert a dbx stab register number (from `r' declaration) to a gdb
REGNUM. */
static int
rs6000_stab_reg_to_regnum (int num)
{
int regnum;
switch (num)
{
case 64:
regnum = gdbarch_tdep (current_gdbarch)->ppc_mq_regnum;
break;
case 65:
regnum = gdbarch_tdep (current_gdbarch)->ppc_lr_regnum;
break;
case 66:
regnum = gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum;
break;
case 76:
regnum = gdbarch_tdep (current_gdbarch)->ppc_xer_regnum;
break;
default:
regnum = num;
break;
}
return regnum;
if (0 <= num && num <= 31)
return tdep->ppc_gp0_regnum + num;
else if (32 <= num && num <= 63)
return FP0_REGNUM + (num - 32);
else if (1200 <= num && num < 1200 + 32)
return tdep->ppc_ev0_regnum + (num - 1200);
else
switch (num)
{
case 64:
return tdep->ppc_mq_regnum;
case 65:
return tdep->ppc_lr_regnum;
case 66:
return tdep->ppc_ctr_regnum;
case 76:
return tdep->ppc_xer_regnum;
case 109:
return tdep->ppc_vrsave_regnum;
default:
return num;
}
/* FIXME: jimb/2004-03-28: Doesn't something need to be done here
for the Altivec registers, too?
Looking at GCC, the headers in config/rs6000 never define a
DBX_REGISTER_NUMBER macro, so the debug info uses the same
numbers GCC does internally. Then, looking at the REGISTER_NAMES
macro defined in config/rs6000/rs6000.h, it seems that GCC gives
v0 -- v31 the numbers 77 -- 108. But we number them 119 -- 150.
I don't have a way to test this ready to hand, but I noticed it
and thought I should include a note. */
}
static void
@ -2599,7 +2604,6 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_pc_regnum (gdbarch, 0);
set_gdbarch_sp_regnum (gdbarch, tdep->ppc_gp0_regnum + 1);
set_gdbarch_deprecated_fp_regnum (gdbarch, tdep->ppc_gp0_regnum + 1);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, e500_dwarf2_reg_to_regnum);
set_gdbarch_pseudo_register_read (gdbarch, e500_pseudo_register_read);
set_gdbarch_pseudo_register_write (gdbarch, e500_pseudo_register_write);
break;
@ -2674,7 +2678,8 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_deprecated_register_convertible (gdbarch, rs6000_register_convertible);
set_gdbarch_deprecated_register_convert_to_virtual (gdbarch, rs6000_register_convert_to_virtual);
set_gdbarch_deprecated_register_convert_to_raw (gdbarch, rs6000_register_convert_to_raw);
set_gdbarch_stab_reg_to_regnum (gdbarch, rs6000_stab_reg_to_regnum);
set_gdbarch_stab_reg_to_regnum (gdbarch, rs6000_dwarf2_stab_reg_to_regnum);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, rs6000_dwarf2_stab_reg_to_regnum);
/* Note: kevinb/2002-04-12: I'm not convinced that rs6000_push_arguments()
is correct for the SysV ABI when the wordsize is 8, but I'm also
fairly certain that ppc_sysv_abi_push_arguments() will give even