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Diffstat (limited to 'gdb/vax-tdep.c')
-rw-r--r--gdb/vax-tdep.c127
1 files changed, 60 insertions, 67 deletions
diff --git a/gdb/vax-tdep.c b/gdb/vax-tdep.c
index 0478227..709ef38 100644
--- a/gdb/vax-tdep.c
+++ b/gdb/vax-tdep.c
@@ -45,12 +45,10 @@ static gdbarch_frame_saved_pc_ftype vax_frame_saved_pc;
static gdbarch_frame_args_address_ftype vax_frame_args_address;
static gdbarch_frame_locals_address_ftype vax_frame_locals_address;
static gdbarch_frame_init_saved_regs_ftype vax_frame_init_saved_regs;
-static gdbarch_get_saved_register_ftype vax_get_saved_register;
static gdbarch_store_struct_return_ftype vax_store_struct_return;
-static gdbarch_extract_return_value_ftype vax_extract_return_value;
-static gdbarch_store_return_value_ftype vax_store_return_value;
-static gdbarch_extract_struct_value_address_ftype
+static gdbarch_deprecated_extract_return_value_ftype vax_extract_return_value;
+static gdbarch_deprecated_extract_struct_value_address_ftype
vax_extract_struct_value_address;
static gdbarch_push_dummy_frame_ftype vax_push_dummy_frame;
@@ -83,7 +81,7 @@ static gdbarch_fix_call_dummy_ftype vax_fix_call_dummy;
static unsigned char *print_insn_arg ();
-static char *
+static const char *
vax_register_name (int regno)
{
static char *register_names[] =
@@ -125,51 +123,6 @@ vax_register_virtual_type (int regno)
}
static void
-vax_get_saved_register (char *raw_buffer, int *optimized, CORE_ADDR *addrp,
- struct frame_info *frame, int regnum,
- enum lval_type *lval)
-{
- CORE_ADDR addr;
-
- if (!target_has_registers)
- error ("No registers.");
-
- /* Normal systems don't optimize out things with register numbers. */
- if (optimized != NULL)
- *optimized = 0;
- addr = find_saved_register (frame, regnum);
- if (addr != 0)
- {
- if (lval != NULL)
- *lval = lval_memory;
- if (regnum == SP_REGNUM)
- {
- if (raw_buffer != NULL)
- {
- /* Put it back in target format. */
- store_address (raw_buffer, REGISTER_RAW_SIZE (regnum),
- (LONGEST) addr);
- }
- if (addrp != NULL)
- *addrp = 0;
- return;
- }
- if (raw_buffer != NULL)
- target_read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum));
- }
- else
- {
- if (lval != NULL)
- *lval = lval_register;
- addr = REGISTER_BYTE (regnum);
- if (raw_buffer != NULL)
- read_register_gen (regnum, raw_buffer);
- }
- if (addrp != NULL)
- *addrp = addr;
-}
-
-static void
vax_frame_init_saved_regs (struct frame_info *frame)
{
int regnum, regmask;
@@ -186,7 +139,7 @@ vax_frame_init_saved_regs (struct frame_info *frame)
/* regmask's low bit is for register 0, which is the first one
what would be pushed. */
- for (regnum = 0; regnum < AP_REGNUM; regnum++)
+ for (regnum = 0; regnum < VAX_AP_REGNUM; regnum++)
{
if (regmask & (1 << regnum))
frame->saved_regs[regnum] = next_addr += 4;
@@ -199,7 +152,7 @@ vax_frame_init_saved_regs (struct frame_info *frame)
frame->saved_regs[PC_REGNUM] = frame->frame + 16;
frame->saved_regs[FP_REGNUM] = frame->frame + 12;
- frame->saved_regs[AP_REGNUM] = frame->frame + 8;
+ frame->saved_regs[VAX_AP_REGNUM] = frame->frame + 8;
frame->saved_regs[PS_REGNUM] = frame->frame + 4;
}
@@ -239,7 +192,7 @@ vax_frame_args_address (struct frame_info *frame)
if (frame->next)
return (read_memory_integer (frame->next->frame + 8, 4));
- return (read_register (AP_REGNUM));
+ return (read_register (VAX_AP_REGNUM));
}
static CORE_ADDR
@@ -276,12 +229,12 @@ vax_push_dummy_frame (void)
sp = push_word (sp, read_register (regnum));
sp = push_word (sp, read_register (PC_REGNUM));
sp = push_word (sp, read_register (FP_REGNUM));
- sp = push_word (sp, read_register (AP_REGNUM));
+ sp = push_word (sp, read_register (VAX_AP_REGNUM));
sp = push_word (sp, (read_register (PS_REGNUM) & 0xffef) + 0x2fff0000);
sp = push_word (sp, 0);
write_register (SP_REGNUM, sp);
write_register (FP_REGNUM, sp);
- write_register (AP_REGNUM, sp + (17 * 4));
+ write_register (VAX_AP_REGNUM, sp + (17 * 4));
}
static void
@@ -296,7 +249,7 @@ vax_pop_frame (void)
| (read_register (PS_REGNUM) & 0xffff0000));
write_register (PC_REGNUM, read_memory_integer (fp + 16, 4));
write_register (FP_REGNUM, read_memory_integer (fp + 12, 4));
- write_register (AP_REGNUM, read_memory_integer (fp + 8, 4));
+ write_register (VAX_AP_REGNUM, read_memory_integer (fp + 8, 4));
fp += 16;
for (regnum = 0; regnum < 12; regnum++)
if (regmask & (0x10000 << regnum))
@@ -353,6 +306,15 @@ vax_extract_struct_value_address (char *regbuf)
return (extract_address (regbuf + REGISTER_BYTE (0), REGISTER_RAW_SIZE (0)));
}
+static const unsigned char *
+vax_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+{
+ static const unsigned char vax_breakpoint[] = { 3 };
+
+ *lenptr = sizeof(vax_breakpoint);
+ return (vax_breakpoint);
+}
+
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
@@ -620,13 +582,30 @@ print_insn_arg (char *d, register char *p, CORE_ADDR addr,
static struct gdbarch *
vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
+ struct gdbarch_tdep *tdep;
struct gdbarch *gdbarch;
+ enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;
+
+ /* Try to determine the ABI of the object we are loading. */
+
+ if (info.abfd != NULL)
+ osabi = gdbarch_lookup_osabi (info.abfd);
+
+ /* Find a candidate among extant architectures. */
+ for (arches = gdbarch_list_lookup_by_info (arches, &info);
+ arches != NULL;
+ arches = gdbarch_list_lookup_by_info (arches->next, &info))
+ {
+ /* Make sure the ABI selection matches. */
+ tdep = gdbarch_tdep (arches->gdbarch);
+ if (tdep && tdep->osabi == osabi)
+ return arches->gdbarch;
+ }
- /* Right now there is only one VAX architecture variant. */
- if (arches != NULL)
- return (arches->gdbarch);
+ tdep = xmalloc (sizeof (struct gdbarch_tdep));
+ gdbarch = gdbarch_alloc (&info, tdep);
- gdbarch = gdbarch_alloc (&info, NULL);
+ tdep->osabi = osabi;
/* Register info */
set_gdbarch_num_regs (gdbarch, VAX_NUM_REGS);
@@ -665,16 +644,13 @@ vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_frame_args_skip (gdbarch, 4);
- set_gdbarch_get_saved_register (gdbarch, vax_get_saved_register);
-
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
/* Return value info */
set_gdbarch_store_struct_return (gdbarch, vax_store_struct_return);
- set_gdbarch_extract_return_value (gdbarch, vax_extract_return_value);
- set_gdbarch_store_return_value (gdbarch, vax_store_return_value);
- set_gdbarch_extract_struct_value_address (gdbarch,
- vax_extract_struct_value_address);
+ set_gdbarch_deprecated_extract_return_value (gdbarch, vax_extract_return_value);
+ set_gdbarch_deprecated_store_return_value (gdbarch, vax_store_return_value);
+ set_gdbarch_deprecated_extract_struct_value_address (gdbarch, vax_extract_struct_value_address);
/* Call dummy info */
set_gdbarch_push_dummy_frame (gdbarch, vax_push_dummy_frame);
@@ -692,18 +668,35 @@ vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
/* Breakpoint info */
+ set_gdbarch_breakpoint_from_pc (gdbarch, vax_breakpoint_from_pc);
set_gdbarch_decr_pc_after_break (gdbarch, 0);
/* Misc info */
set_gdbarch_function_start_offset (gdbarch, 2);
+ set_gdbarch_believe_pcc_promotion (gdbarch, 1);
+
+ /* Hook in ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch, osabi);
return (gdbarch);
}
+static void
+vax_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+
+ if (tdep == NULL)
+ return;
+
+ fprintf_unfiltered (file, "vax_dump_tdep: OS ABI = %s\n",
+ gdbarch_osabi_name (tdep->osabi));
+}
+
void
_initialize_vax_tdep (void)
{
- gdbarch_register (bfd_arch_vax, vax_gdbarch_init, NULL);
+ gdbarch_register (bfd_arch_vax, vax_gdbarch_init, vax_dump_tdep);
tm_print_insn = vax_print_insn;
}
generated by cgit v1.1 at 2024-11-21 19:48:28 +0000