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authorJason Thorpe <thorpej@netbsd.org>2002-09-01 23:24:19 +0000
committerJason Thorpe <thorpej@netbsd.org>2002-09-01 23:24:19 +0000
commit3cac699e88ee490082ae109bb5116cd51404ddd5 (patch)
tree68ea3327a044f58db0b259fe25b76415391fc0a0 /gdb/i386nbsd-tdep.c
parent7e3ceb5296ec2772276a902d345e1fca6eede428 (diff)
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* Makefile.in (i386nbsd-tdep.o): Add $(arch_utils_h),
$(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.
Diffstat (limited to 'gdb/i386nbsd-tdep.c')
-rw-r--r--gdb/i386nbsd-tdep.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/gdb/i386nbsd-tdep.c b/gdb/i386nbsd-tdep.c
index 634101a..cba2f19 100644
--- a/gdb/i386nbsd-tdep.c
+++ b/gdb/i386nbsd-tdep.c
@@ -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);
}