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Approved by Daniel Jacobowitz. 

2006-06-13  Fred Fish  <fnf@specifix.com>
	* mips-tdep.c (mips_find_long_section): New function.
	(mips_gdbarch_init): Use it to set long and pointer sizes.
This commit is contained in:
Fred Fish 2006-06-13 18:17:20 +00:00
parent 4f87808cf3
commit 22e47e37c4
2 changed files with 71 additions and 0 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2006-06-13 Fred Fish <fnf@specifix.com>
* mips-tdep.c (mips_find_long_section): New function.
(mips_gdbarch_init): Use it to set long and pointer sizes.
2006-06-13 Nathan Sidwell <nathan@codesourcery.com>
* remote-file.io.c (remote_fileio_func_system): Treat zero length

66
gdb/mips-tdep.c
View File

@ -4690,6 +4690,20 @@ mips_find_abi_section (bfd *abfd, asection *sect, void *obj)
warning (_("unsupported ABI %s."), name + 8);
}
static void
mips_find_long_section (bfd *abfd, asection *sect, void *obj)
{
int *lbp = (int *) obj;
const char *name = bfd_get_section_name (abfd, sect);
if (strncmp (name, ".gcc_compiled_long32", 20) == 0)
*lbp = 32;
else if (strncmp (name, ".gcc_compiled_long64", 20) == 0)
*lbp = 64;
else if (strncmp (name, ".gcc_compiled_long", 18) == 0)
warning (_("unrecognized .gcc_compiled_longXX"));
}
static enum mips_abi
global_mips_abi (void)
{
@ -5009,6 +5023,58 @@ mips_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
internal_error (__FILE__, __LINE__, _("unknown ABI in switch"));
}
/* GCC creates a pseudo-section whose name specifies the size of
longs, since -mlong32 or -mlong64 may be used independent of
other options. How those options affect pointer sizes is ABI and
architecture dependent, so use them to override the default sizes
set by the ABI. This table shows the relationship between ABI,
-mlongXX, and size of pointers:
ABI -mlongXX ptr bits
--- -------- --------
o32 32 32
o32 64 32
n32 32 32
n32 64 64
o64 32 32
o64 64 64
n64 32 32
n64 64 64
eabi32 32 32
eabi32 64 32
eabi64 32 32
eabi64 64 64
Note that for o32 and eabi32, pointers are always 32 bits
regardless of any -mlongXX option. For all others, pointers and
longs are the same, as set by -mlongXX or set by defaults.
*/
if (info.abfd != NULL)
{
int long_bit = 0;
bfd_map_over_sections (info.abfd, mips_find_long_section, &long_bit);
if (long_bit)
{
set_gdbarch_long_bit (gdbarch, long_bit);
switch (mips_abi)
{
case MIPS_ABI_O32:
case MIPS_ABI_EABI32:
break;
case MIPS_ABI_N32:
case MIPS_ABI_O64:
case MIPS_ABI_N64:
case MIPS_ABI_EABI64:
set_gdbarch_ptr_bit (gdbarch, long_bit);
break;
default:
internal_error (__FILE__, __LINE__, _("unknown ABI in switch"));
}
}
}
/* FIXME: jlarmour/2000-04-07: There *is* a flag EF_MIPS_32BIT_MODE
that could indicate -gp32 BUT gas/config/tc-mips.c contains the
comment: