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

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and vax-tdep.h.
* vax-tdep.h: New file.
* vax-tdep.c: Include inferior.h, arch-utils.h, and vax-tdep.h.
Make several routines static.
(vax_get_saved_register): New function.
(vax_gdbarch_init): New function.
(_initialize_vax_tdep): Register vax_gdbarch_init.
* config/vax/tm-vax.h: Set GDB_MULTI_ARCH to GDB_MULTI_ARCH_PARTIAL.
Remove macros now under the control of gdbarch.
This commit is contained in:
Jason Thorpe
2002-04-23 00:53:31 +00:00
parent 2a290ed49a
commit f267bd6a08
5 changed files with 264 additions and 170 deletions
Download Patch File Download Diff File Expand all files Collapse all files

213
gdb/vax-tdep.c
View File

@@ -23,9 +23,39 @@
#include "symtab.h"
#include "opcode/vax.h"
#include "gdbcore.h"
#include "inferior.h"
#include "regcache.h"
#include "frame.h"
#include "value.h"
#include "arch-utils.h"
#include "vax-tdep.h"
static gdbarch_register_name_ftype vax_register_name;
static gdbarch_register_byte_ftype vax_register_byte;
static gdbarch_register_raw_size_ftype vax_register_raw_size;
static gdbarch_register_virtual_size_ftype vax_register_virtual_size;
static gdbarch_register_virtual_type_ftype vax_register_virtual_type;
static gdbarch_skip_prologue_ftype vax_skip_prologue;
static gdbarch_saved_pc_after_call_ftype vax_saved_pc_after_call;
static gdbarch_frame_num_args_ftype vax_frame_num_args;
static gdbarch_frame_chain_ftype vax_frame_chain;
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
vax_extract_struct_value_address;
static gdbarch_push_dummy_frame_ftype vax_push_dummy_frame;
static gdbarch_pop_frame_ftype vax_pop_frame;
static gdbarch_fix_call_dummy_ftype vax_fix_call_dummy;
/* Return 1 if P points to an invalid floating point value.
LEN is the length in bytes -- not relevant on the Vax. */
@@ -53,7 +83,7 @@
static unsigned char *print_insn_arg ();
char *
static char *
vax_register_name (int regno)
{
static char *register_names[] =
@@ -70,31 +100,76 @@ vax_register_name (int regno)
return (register_names[regno]);
}
int
static int
vax_register_byte (int regno)
{
return (regno * 4);
}
int
static int
vax_register_raw_size (int regno)
{
return (4);
}
int
static int
vax_register_virtual_size (int regno)
{
return (4);
}
struct type *
static struct type *
vax_register_virtual_type (int regno)
{
return (builtin_type_int);
}
void
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;
@@ -128,7 +203,7 @@ vax_frame_init_saved_regs (struct frame_info *frame)
frame->saved_regs[PS_REGNUM] = frame->frame + 4;
}
CORE_ADDR
static CORE_ADDR
vax_frame_saved_pc (struct frame_info *frame)
{
if (frame->signal_handler_caller)
@@ -155,7 +230,7 @@ vax_frame_args_address_correct (struct frame_info *frame)
return (0);
}
CORE_ADDR
static CORE_ADDR
vax_frame_args_address (struct frame_info *frame)
{
/* In most of GDB, getting the args address is too important to
@@ -167,19 +242,19 @@ vax_frame_args_address (struct frame_info *frame)
return (read_register (AP_REGNUM));
}
CORE_ADDR
static CORE_ADDR
vax_frame_locals_address (struct frame_info *frame)
{
return (frame->frame);
}
int
static int
vax_frame_num_args (struct frame_info *fi)
{
return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1));
}
CORE_ADDR
static CORE_ADDR
vax_frame_chain (struct frame_info *frame)
{
/* In the case of the VAX, the frame's nominal address is the FP value,
@@ -190,7 +265,7 @@ vax_frame_chain (struct frame_info *frame)
return (read_memory_integer (frame->frame + 12, 4));
}
void
static void
vax_push_dummy_frame (void)
{
CORE_ADDR sp = read_register (SP_REGNUM);
@@ -209,7 +284,7 @@ vax_push_dummy_frame (void)
write_register (AP_REGNUM, sp + (17 * 4));
}
void
static void
vax_pop_frame (void)
{
CORE_ADDR fp = read_register (FP_REGNUM);
@@ -243,10 +318,10 @@ vax_pop_frame (void)
It is 8 bytes long. The address and argc are patched by
vax_fix_call_dummy(). */
LONGEST vax_call_dummy_words[] = { 0x329f69fb, 0x03323232 };
int sizeof_vax_call_dummy_words = sizeof(vax_call_dummy_words);
static LONGEST vax_call_dummy_words[] = { 0x329f69fb, 0x03323232 };
static int sizeof_vax_call_dummy_words = sizeof(vax_call_dummy_words);
void
static void
vax_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
struct value **args, struct type *type, int gcc_p)
{
@@ -254,25 +329,25 @@ vax_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
store_unsigned_integer (dummy + 3, 4, fun);
}
void
static void
vax_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
write_register (1, addr);
}
void
static void
vax_extract_return_value (struct type *valtype, char *regbuf, char *valbuf)
{
memcpy (valbuf, regbuf + REGISTER_BYTE (0), TYPE_LENGTH (valtype));
}
void
static void
vax_store_return_value (struct type *valtype, char *valbuf)
{
write_register_bytes (0, valbuf, TYPE_LENGTH (valtype));
}
CORE_ADDR
static CORE_ADDR
vax_extract_struct_value_address (char *regbuf)
{
return (extract_address (regbuf + REGISTER_BYTE (0), REGISTER_RAW_SIZE (0)));
@@ -281,7 +356,7 @@ vax_extract_struct_value_address (char *regbuf)
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
CORE_ADDR
static CORE_ADDR
vax_skip_prologue (CORE_ADDR pc)
{
register int op = (unsigned char) read_memory_integer (pc, 1);
@@ -307,7 +382,7 @@ vax_skip_prologue (CORE_ADDR pc)
return pc;
}
CORE_ADDR
static CORE_ADDR
vax_saved_pc_after_call (struct frame_info *frame)
{
return (FRAME_SAVED_PC(frame));
@@ -363,7 +438,7 @@ vax_print_insn (CORE_ADDR memaddr, disassemble_info *info)
}
return p - buffer;
}
static unsigned char *
print_insn_arg (char *d, register char *p, CORE_ADDR addr,
disassemble_info *info)
@@ -534,9 +609,101 @@ print_insn_arg (char *d, register char *p, CORE_ADDR addr,
return (unsigned char *) p;
}
/* Initialize the current architecture based on INFO. If possible, re-use an
architecture from ARCHES, which is a list of architectures already created
during this debugging session.
Called e.g. at program startup, when reading a core file, and when reading
a binary file. */
static struct gdbarch *
vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch *gdbarch;
/* Right now there is only one VAX architecture variant. */
if (arches != NULL)
return (arches->gdbarch);
gdbarch = gdbarch_alloc (&info, NULL);
/* Register info */
set_gdbarch_num_regs (gdbarch, VAX_NUM_REGS);
set_gdbarch_sp_regnum (gdbarch, VAX_SP_REGNUM);
set_gdbarch_fp_regnum (gdbarch, VAX_FP_REGNUM);
set_gdbarch_pc_regnum (gdbarch, VAX_PC_REGNUM);
set_gdbarch_ps_regnum (gdbarch, VAX_PS_REGNUM);
set_gdbarch_register_name (gdbarch, vax_register_name);
set_gdbarch_register_size (gdbarch, VAX_REGISTER_SIZE);
set_gdbarch_register_bytes (gdbarch, VAX_REGISTER_BYTES);
set_gdbarch_register_byte (gdbarch, vax_register_byte);
set_gdbarch_register_raw_size (gdbarch, vax_register_raw_size);
set_gdbarch_max_register_raw_size (gdbarch, VAX_MAX_REGISTER_RAW_SIZE);
set_gdbarch_register_virtual_size (gdbarch, vax_register_virtual_size);
set_gdbarch_max_register_virtual_size (gdbarch,
VAX_MAX_REGISTER_VIRTUAL_SIZE);
set_gdbarch_register_virtual_type (gdbarch, vax_register_virtual_type);
/* Frame and stack info */
set_gdbarch_skip_prologue (gdbarch, vax_skip_prologue);
set_gdbarch_saved_pc_after_call (gdbarch, vax_saved_pc_after_call);
set_gdbarch_frame_num_args (gdbarch, vax_frame_num_args);
set_gdbarch_frameless_function_invocation (gdbarch,
generic_frameless_function_invocation_not);
set_gdbarch_frame_chain (gdbarch, vax_frame_chain);
set_gdbarch_frame_chain_valid (gdbarch, func_frame_chain_valid);
set_gdbarch_frame_saved_pc (gdbarch, vax_frame_saved_pc);
set_gdbarch_frame_args_address (gdbarch, vax_frame_args_address);
set_gdbarch_frame_locals_address (gdbarch, vax_frame_locals_address);
set_gdbarch_frame_init_saved_regs (gdbarch, vax_frame_init_saved_regs);
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);
/* Call dummy info */
set_gdbarch_push_dummy_frame (gdbarch, vax_push_dummy_frame);
set_gdbarch_pop_frame (gdbarch, vax_pop_frame);
set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
set_gdbarch_call_dummy_p (gdbarch, 1);
set_gdbarch_call_dummy_words (gdbarch, vax_call_dummy_words);
set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof_vax_call_dummy_words);
set_gdbarch_fix_call_dummy (gdbarch, vax_fix_call_dummy);
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 7);
set_gdbarch_use_generic_dummy_frames (gdbarch, 0);
set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_on_stack);
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
/* Breakpoint info */
set_gdbarch_decr_pc_after_break (gdbarch, 0);
/* Misc info */
set_gdbarch_function_start_offset (gdbarch, 2);
return (gdbarch);
}
void
_initialize_vax_tdep (void)
{
gdbarch_register (bfd_arch_vax, vax_gdbarch_init, NULL);
tm_print_insn = vax_print_insn;
}