/* Target-dependent code for the SPARC for GDB, the GNU debugger.
- Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997
- Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of GDB.
#include "value.h"
#include "bfd.h"
#include "gdb_string.h"
+#include "regcache.h"
#ifdef USE_PROC_FS
#include <sys/procfs.h>
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
#endif
#include "gdbcore.h"
#include "symfile.h" /* for 'entry_point_address' */
-/* Prototypes for supply_gregset etc. */
-#include "gregset.h"
-
/*
* Some local macros that have multi-arch and non-multi-arch versions:
*/
negative number if a flat frame) to the sp. FIXME: Does not
handle large frames which will need more than one instruction
to adjust the sp. */
- insn = fetch_instruction (prologue_start, 4);
+ insn = fetch_instruction (prologue_start);
if (X_OP (insn) == 2 && X_RD (insn) == 14 && X_OP3 (insn) == 0
&& X_I (insn) && X_SIMM13 (insn) < 0)
{
sparc_frame_chain (struct frame_info *frame)
{
/* Value that will cause FRAME_CHAIN_VALID to not worry about the chain
- value. If it realy is zero, we detect it later in
+ value. If it really is zero, we detect it later in
sparc_init_prev_frame. */
return (CORE_ADDR) 1;
}
frame = create_new_frame (argv[0], 0);
if (!frame)
- internal_error ("create_new_frame returned invalid frame");
+ internal_error (__FILE__, __LINE__,
+ "create_new_frame returned invalid frame");
frame->extra_info->bottom = argv[1];
frame->pc = FRAME_SAVED_PC (frame);
CORE_ADDR frame_addr = FRAME_FP (fi);
if (!fi)
- internal_error ("Bad frame info struct in FRAME_FIND_SAVED_REGS");
+ internal_error (__FILE__, __LINE__,
+ "Bad frame info struct in FRAME_FIND_SAVED_REGS");
memset (saved_regs_addr, 0, NUM_REGS * sizeof (CORE_ADDR));
| (((fun - (pc + CALL_DUMMY_CALL_OFFSET)) >> 2)
& 0x3fffffff)));
- /* Comply with strange Sun cc calling convention for struct-returning
- functions. */
- if (!using_gcc
- && (TYPE_CODE (value_type) == TYPE_CODE_STRUCT
- || TYPE_CODE (value_type) == TYPE_CODE_UNION))
- store_unsigned_integer (dummy + CALL_DUMMY_CALL_OFFSET + 8, 4,
- TYPE_LENGTH (value_type) & 0x1fff);
+ /* If the called function returns an aggregate value, fill in the UNIMP
+ instruction containing the size of the returned aggregate return value,
+ which follows the call instruction.
+ For details see the SPARC Architecture Manual Version 8, Appendix D.3.
+
+ Adjust the call_dummy_breakpoint_offset for the bp_call_dummy breakpoint
+ to the proper address in the call dummy, so that `finish' after a stop
+ in a call dummy works.
+ Tweeking current_gdbarch is not an optimal solution, but the call to
+ sparc_fix_call_dummy is immediately followed by a call to run_stack_dummy,
+ which is the only function where dummy_breakpoint_offset is actually
+ used, if it is non-zero. */
+ if (TYPE_CODE (value_type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (value_type) == TYPE_CODE_UNION)
+ {
+ store_unsigned_integer (dummy + CALL_DUMMY_CALL_OFFSET + 8, 4,
+ TYPE_LENGTH (value_type) & 0x1fff);
+ set_gdbarch_call_dummy_breakpoint_offset (current_gdbarch, 0x30);
+ }
+ else
+ set_gdbarch_call_dummy_breakpoint_offset (current_gdbarch, 0x2c);
if (!(GDB_TARGET_IS_SPARC64))
{
fpreg = FP0_REGNUM + 2 * register_counter;
register_counter += 2;
break;
+ default:
+ internal_error (__FILE__, __LINE__, "bad switch");
}
write_register_bytes (REGISTER_BYTE (fpreg),
VALUE_CONTENTS (args[i]),
{ /* no-op */
}
-/* The frame address: stored in the 'frame' field of the frame_info. */
-
-static CORE_ADDR
-sparc_frame_address (struct frame_info *fi)
-{
- return fi->frame;
-}
-
/* gdbarch fix call dummy:
All this function does is rearrange the arguments before calling
sparc_fix_call_dummy (which does the real work). */
set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_fp_regnum (gdbarch, SPARC_FP_REGNUM);
set_gdbarch_fp0_regnum (gdbarch, SPARC_FP0_REGNUM);
- set_gdbarch_frame_args_address (gdbarch, sparc_frame_address);
+ set_gdbarch_frame_args_address (gdbarch, default_frame_address);
set_gdbarch_frame_chain (gdbarch, sparc_frame_chain);
set_gdbarch_frame_init_saved_regs (gdbarch, sparc_frame_init_saved_regs);
- set_gdbarch_frame_locals_address (gdbarch, sparc_frame_address);
+ set_gdbarch_frame_locals_address (gdbarch, default_frame_address);
set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
set_gdbarch_frame_saved_pc (gdbarch, sparc_frame_saved_pc);
set_gdbarch_frameless_function_invocation (gdbarch,
set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_max_register_raw_size (gdbarch, 8);
set_gdbarch_max_register_virtual_size (gdbarch, 8);
-#ifdef DO_CALL_DUMMY_ON_STACK
- set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_on_stack);
-#else
- set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point);
-#endif
set_gdbarch_pop_frame (gdbarch, sparc_pop_frame);
set_gdbarch_push_return_address (gdbarch, sparc_push_return_address);
set_gdbarch_push_dummy_frame (gdbarch, sparc_push_dummy_frame);
/* 32-bit machine types: */
#ifdef SPARC32_CALL_DUMMY_ON_STACK
+ set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_on_stack);
set_gdbarch_call_dummy_address (gdbarch, sparc_call_dummy_address);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0x30);
set_gdbarch_call_dummy_length (gdbarch, 0x38);
set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
set_gdbarch_call_dummy_words (gdbarch, call_dummy_32);
#else
+ set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point);
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
set_gdbarch_call_dummy_length (gdbarch, 0);
default: /* Any new machine type is likely to be 64-bit. */
#ifdef SPARC64_CALL_DUMMY_ON_STACK
+ set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_on_stack);
set_gdbarch_call_dummy_address (gdbarch, sparc_call_dummy_address);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 8 * 4);
set_gdbarch_call_dummy_length (gdbarch, 192);
set_gdbarch_call_dummy_start_offset (gdbarch, 148);
set_gdbarch_call_dummy_words (gdbarch, call_dummy_64);
#else
+ set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point);
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
set_gdbarch_call_dummy_length (gdbarch, 0);
projects / deliverable / binutils-gdb.git / blobdiff