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* Makefile.in (i386nbsd-tdep.o): Add $(arch_utils_h),

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$(i386_tdep_h), and nbsd-tdep.h to dependency list.
* i386-tdep.h (i386bsd_init_abi): New prototype.
* i386bsd-tdep.c (i386bsd_init_abi): Remove "static" from
function declaration.
(_initialize_i386bsd_tdep): Don't register OS ABI handlers
for NetBSD-a.out or NetBSD-ELF.
(i386nbsd_sigtramp_start, i386nbsd_sigtramp_end)
(i386nbsd_sc_pc_offset, i386nbsd_sc_sp_offset)
(i386nbsd_init_abi, i386nbsdelf_init_abi): Move to...
* i386nbsd-tdep.c: ...here.  Include arch-utils.h, i386-tdep.h,
and nbsd-tdep.h.
(i386nbsd_pc_in_sigtramp): New function.
(i386nbsd_init_abi): Set gdbarch_pc_in_sigtramp to
i386nbsd_pc_in_sigtramp.
(_initialize_i386nbsd_tdep): Register i386nbsd_init_abi
and i386nbsdelf_init_abi OS ABI handlers.
* config/i386/nbsdaout.mt (TDEPFILES): Add nbsd-tdep.o.
* config/i386/nbsdelf.mt (TDEPFILES): Likewise.
This commit is contained in:
Jason Thorpe
2002-09-01 23:24:19 +00:00
parent 7e3ceb5296
commit 3cac699e88
7 changed files with 109 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

79
gdb/i386nbsd-tdep.c
View File

@@ -23,8 +23,11 @@
#include "gdbtypes.h"
#include "gdbcore.h"
#include "regcache.h"
#include "arch-utils.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
#include "nbsd-tdep.h"
/* Map a GDB register number to an offset in the reg structure. */
static int regmap[] =
@@ -137,9 +140,85 @@ static struct core_fns i386nbsd_elfcore_fns =
NULL /* next */
};
static int
i386nbsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
/* Check for libc-provided signal trampoline. */
if (nbsd_pc_in_sigtramp (pc, name))
return 1;
/* FIXME: sigtramp_start/sigtramp_end need to go away; we should
not be assuming the location of the kernel-provided trampoline! */
return (pc >= tdep->sigtramp_start && pc < tdep->sigtramp_end);
}
CORE_ADDR i386nbsd_sigtramp_start = 0xbfbfdf20;
CORE_ADDR i386nbsd_sigtramp_end = 0xbfbfdff0;
/* From <machine/signal.h>. */
int i386nbsd_sc_pc_offset = 44;
int i386nbsd_sc_sp_offset = 56;
static void
i386nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Obviously NetBSD is BSD-based. */
i386bsd_init_abi (info, gdbarch);
/* NetBSD has different signal trampoline conventions. */
set_gdbarch_pc_in_sigtramp (gdbarch, i386nbsd_pc_in_sigtramp);
/* NetBSD uses -freg-struct-return by default. */
tdep->struct_return = reg_struct_return;
/* NetBSD uses a different memory layout. */
tdep->sigtramp_start = i386nbsd_sigtramp_start;
tdep->sigtramp_end = i386nbsd_sigtramp_end;
/* NetBSD has a `struct sigcontext' that's different from the
origional 4.3 BSD. */
tdep->sc_pc_offset = i386nbsd_sc_pc_offset;
tdep->sc_sp_offset = i386nbsd_sc_sp_offset;
}
/* NetBSD ELF. */
static void
i386nbsdelf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* It's still NetBSD. */
i386nbsd_init_abi (info, gdbarch);
/* But ELF-based. */
i386_elf_init_abi (info, gdbarch);
/* NetBSD ELF uses SVR4-style shared libraries. */
set_gdbarch_in_solib_call_trampoline (gdbarch,
generic_in_solib_call_trampoline);
/* NetBSD ELF uses -fpcc-struct-return by default. */
tdep->struct_return = pcc_struct_return;
/* We support the SSE registers on NetBSD ELF. */
tdep->num_xmm_regs = I386_NUM_XREGS - 1;
set_gdbarch_num_regs (gdbarch, I386_NUM_GREGS + I386_NUM_FREGS
+ I386_NUM_XREGS);
}
void
_initialize_i386nbsd_tdep (void)
{
add_core_fns (&i386nbsd_core_fns);
add_core_fns (&i386nbsd_elfcore_fns);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_NETBSD_AOUT,
i386nbsd_init_abi);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_NETBSD_ELF,
i386nbsdelf_init_abi);
}