#include "gdbcore.h"
#include "regcache.h"
+#include "gdb_string.h"
+
#include "i386-tdep.h"
/* Support for signal handlers. */
}
/* Assuming FRAME is for a BSD sigtramp routine, return the address of
- the associated sigcontext structure. */
+ the associated sigcontext structure.
+
+ Note: This function is used for Solaris 2 too, so don't make it
+ static. */
-static CORE_ADDR
+CORE_ADDR
i386bsd_sigcontext_addr (struct frame_info *frame)
{
if (frame->next)
return read_memory_unsigned_integer (read_register (SP_REGNUM) + 8, 4);
}
-/* Assuming FRAME is for a BSD sigtramp routine, return the saved
- program counter.
-
- Note: This function is used for Solaris 2 too, so don't make it
- static. */
-
-CORE_ADDR
-i386bsd_sigtramp_saved_pc (struct frame_info *frame)
-{
- int sc_pc_offset = gdbarch_tdep (current_gdbarch)->sc_pc_offset;
- CORE_ADDR addr;
-
- addr = i386bsd_sigcontext_addr (frame);
- return read_memory_unsigned_integer (addr + sc_pc_offset, 4);
-}
-
-/* Return the saved program counter for FRAME. */
-
-static CORE_ADDR
-i386bsd_frame_saved_pc (struct frame_info *frame)
-{
- if (frame->signal_handler_caller)
- return i386bsd_sigtramp_saved_pc (frame);
-
- return read_memory_unsigned_integer (frame->frame + 4, 4);
-}
-
/* Return the start address of the sigtramp routine. */
CORE_ADDR
/* From <machine/signal.h>. */
int i386bsd_sc_pc_offset = 20;
+int i386bsd_sc_sp_offset = 8;
-static void
+void
i386bsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
tdep->jb_pc_offset = 0;
- tdep->sigtramp_saved_pc = i386bsd_sigtramp_saved_pc;
tdep->sigtramp_start = 0xfdbfdfc0;
tdep->sigtramp_end = 0xfdbfe000;
+ tdep->sigcontext_addr = i386bsd_sigcontext_addr;
tdep->sc_pc_offset = i386bsd_sc_pc_offset;
-}
-
-/* NetBSD 1.0 or later. */
-
-/* From <machine/signal.h>. */
-int i386nbsd_sc_pc_offset = 44;
-
-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 uses -freg-struct-return by default. */
- tdep->struct_return = reg_struct_return;
-
- /* NetBSD uses a different memory layout. */
- tdep->sigtramp_start = 0xbfbfdf20;
- tdep->sigtramp_end = 0xbfbfdff0;
-
- /* NetBSD has a `struct sigcontext' that's different from the
- origional 4.3 BSD. */
- tdep->sc_pc_offset = i386nbsd_sc_pc_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);
+ tdep->sc_sp_offset = i386bsd_sc_sp_offset;
}
/* FreeBSD 3.0-RELEASE or later. */
/* From <machine/signal.h>. */
int i386fbsd4_sc_pc_offset = 76;
+int i386fbsd4_sc_sp_offset = 88;
static void
i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
/* FreeBSD 4.0 introduced a new `struct sigcontext'. */
tdep->sc_pc_offset = i386fbsd4_sc_pc_offset;
+ tdep->sc_sp_offset = i386fbsd4_sc_sp_offset;
}
\f
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_aout_flavour,
i386bsd_aout_osabi_sniffer);
- 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);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_FREEBSD_AOUT,
i386fbsdaout_init_abi);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_FREEBSD_ELF,