static struct type *mips_register_type (struct gdbarch *gdbarch, int regnum);
-/* A useful bit in the CP0 status register (PS_REGNUM). */
+/* A useful bit in the CP0 status register (MIPS_PS_REGNUM). */
/* This bit is set if we are emulating 32-bit FPRs on a 64-bit chip. */
#define ST0_FR (1 << 26)
NULL
};
-struct frame_extra_info
-{
- mips_extra_func_info_t proc_desc;
- int num_args;
-};
-
/* Various MIPS ISA options (related to stack analysis) can be
overridden dynamically. Establish an enum/array for managing
them. */
/* Otherwise check the FR bit in the status register - it controls
the FP compatiblity mode. If it is clear we are in compatibility
mode. */
- if ((read_register (PS_REGNUM) & ST0_FR) == 0)
+ if ((read_register (MIPS_PS_REGNUM) & ST0_FR) == 0)
return 1;
#endif
the ABI (with a few complications). */
if (regnum >= (NUM_REGS
+ mips_regnum (current_gdbarch)->fp_control_status)
- && regnum <= NUM_REGS + LAST_EMBED_REGNUM)
+ && regnum <= NUM_REGS + MIPS_LAST_EMBED_REGNUM)
/* The pseudo/cooked view of the embedded registers is always
32-bit. The raw view is handled below. */
return builtin_type_int32;
/* Fetch and return instruction from the specified location. If the PC
is odd, assume it's a MIPS16 instruction; otherwise MIPS32. */
-static t_inst
+static ULONGEST
mips_fetch_instruction (CORE_ADDR addr)
{
- char buf[MIPS32_INSN_SIZE];
+ char buf[MIPS_INSN32_SIZE];
int instlen;
int status;
if (mips_pc_is_mips16 (addr))
{
- instlen = MIPS16_INSN_SIZE;
+ instlen = MIPS_INSN16_SIZE;
addr = unmake_mips16_addr (addr);
}
else
- instlen = MIPS32_INSN_SIZE;
+ instlen = MIPS_INSN32_SIZE;
status = deprecated_read_memory_nobpt (addr, buf, instlen);
if (status)
memory_error (status, addr);
#define rtype_shamt(x) ((x >> 6) & 0x1f)
#define rtype_funct(x) (x & 0x3f)
-static CORE_ADDR
-mips32_relative_offset (unsigned long inst)
+static LONGEST
+mips32_relative_offset (ULONGEST inst)
{
- long x;
- x = itype_immediate (inst);
- if (x & 0x8000) /* sign bit set */
- {
- x |= 0xffff0000; /* sign extension */
- }
- x = x << 2;
- return x;
+ return ((itype_immediate (inst) ^ 0x8000) - 0x8000) << 2;
}
/* Determine whate to set a single step breakpoint while considering
if (limit_pc > start_pc + 200)
limit_pc = start_pc + 200;
- for (cur_pc = start_pc; cur_pc < limit_pc; cur_pc += MIPS16_INSN_SIZE)
+ for (cur_pc = start_pc; cur_pc < limit_pc; cur_pc += MIPS_INSN16_SIZE)
{
/* Save the previous instruction. If it's an EXTEND, we'll extract
the immediate offset extension from it in mips16_get_imm. */
over the extend. */
if ((inst & 0xf800) == 0xf000) /* extend */
{
- extend_bytes = MIPS16_INSN_SIZE;
+ extend_bytes = MIPS_INSN16_SIZE;
continue;
}
&& (inst & 0x700) != 0x700) /* entry */
entry_inst = inst; /* save for later processing */
else if ((inst & 0xf800) == 0x1800) /* jal(x) */
- cur_pc += MIPS16_INSN_SIZE; /* 32-bit instruction */
+ cur_pc += MIPS_INSN16_SIZE; /* 32-bit instruction */
else if ((inst & 0xff1c) == 0x6704) /* move reg,$a0-$a3 */
{
/* This instruction is part of the prologue, but we don't
restart:
frame_offset = 0;
- for (cur_pc = start_pc; cur_pc < limit_pc; cur_pc += MIPS32_INSN_SIZE)
+ for (cur_pc = start_pc; cur_pc < limit_pc; cur_pc += MIPS_INSN32_SIZE)
{
unsigned long inst, high_word, low_word;
int reg;
|| high_word == 0x3408 /* ori $t0,$zero,n */
))
{
- load_immediate_bytes += MIPS32_INSN_SIZE; /* FIXME! */
+ load_immediate_bytes += MIPS_INSN32_SIZE; /* FIXME! */
}
else
{
target_remove_breakpoint (next_pc, break_mem);
}
-static struct mips_extra_func_info temp_proc_desc;
-
/* Test whether the PC points to the return instruction at the
end of a function. */
if (heuristic_fence_post == UINT_MAX || fence < VM_MIN_ADDRESS)
fence = VM_MIN_ADDRESS;
- instlen = mips_pc_is_mips16 (pc) ? MIPS16_INSN_SIZE : MIPS32_INSN_SIZE;
+ instlen = mips_pc_is_mips16 (pc) ? MIPS_INSN16_SIZE : MIPS_INSN32_SIZE;
/* search back for previous return */
for (start_pc -= instlen;; start_pc -= instlen)
else if (mips_about_to_return (start_pc))
{
/* Skip return and its delay slot. */
- start_pc += 2 * MIPS32_INSN_SIZE;
+ start_pc += 2 * MIPS_INSN32_SIZE;
break;
}
char *contents;
};
-/* MIPS stack frames are almost impenetrable. When execution stops,
- we basically have to look at symbol information for the function
- that we stopped in, which tells us *which* register (if any) is
- the base of the frame pointer, and what offset from that register
- the frame itself is at.
-
- This presents a problem when trying to examine a stack in memory
- (that isn't executing at the moment), using the "frame" command. We
- don't have a PC, nor do we have any registers except SP.
-
- This routine takes two arguments, SP and PC, and tries to make the
- cached frames look as if these two arguments defined a frame on the
- cache. This allows the rest of info frame to extract the important
- arguments without difficulty. */
-
-struct frame_info *
-setup_arbitrary_frame (int argc, CORE_ADDR *argv)
-{
- if (argc != 2)
- error ("MIPS frame specifications require two arguments: sp and pc");
-
- return create_new_frame (argv[0], argv[1]);
-}
-
/* According to the current ABI, should the type be passed in a
floating-point register (assuming that there is space)? When there
is no FPU, FP are not even considered as possibile candidates for
than necessary for EABI, because the first few arguments are
passed in registers, but that's OK. */
for (argnum = 0; argnum < nargs; argnum++)
- len += align_up (TYPE_LENGTH (VALUE_TYPE (args[argnum])),
+ len += align_up (TYPE_LENGTH (value_type (args[argnum])),
mips_stack_argsize (gdbarch));
sp -= align_up (len, 16);
char *val;
char valbuf[MAX_REGISTER_SIZE];
struct value *arg = args[argnum];
- struct type *arg_type = check_typedef (VALUE_TYPE (arg));
+ struct type *arg_type = check_typedef (value_type (arg));
int len = TYPE_LENGTH (arg_type);
enum type_code typecode = TYPE_CODE (arg_type);
/* Now make space on the stack for the args. */
for (argnum = 0; argnum < nargs; argnum++)
- len += align_up (TYPE_LENGTH (VALUE_TYPE (args[argnum])),
+ len += align_up (TYPE_LENGTH (value_type (args[argnum])),
mips_stack_argsize (gdbarch));
sp -= align_up (len, 16);
{
char *val;
struct value *arg = args[argnum];
- struct type *arg_type = check_typedef (VALUE_TYPE (arg));
+ struct type *arg_type = check_typedef (value_type (arg));
int len = TYPE_LENGTH (arg_type);
enum type_code typecode = TYPE_CODE (arg_type);
/* Now make space on the stack for the args. */
for (argnum = 0; argnum < nargs; argnum++)
- len += align_up (TYPE_LENGTH (VALUE_TYPE (args[argnum])),
+ len += align_up (TYPE_LENGTH (value_type (args[argnum])),
mips_stack_argsize (gdbarch));
sp -= align_up (len, 16);
{
char *val;
struct value *arg = args[argnum];
- struct type *arg_type = check_typedef (VALUE_TYPE (arg));
+ struct type *arg_type = check_typedef (value_type (arg));
int len = TYPE_LENGTH (arg_type);
enum type_code typecode = TYPE_CODE (arg_type);
/* Now make space on the stack for the args. */
for (argnum = 0; argnum < nargs; argnum++)
- len += align_up (TYPE_LENGTH (VALUE_TYPE (args[argnum])),
+ len += align_up (TYPE_LENGTH (value_type (args[argnum])),
mips_stack_argsize (gdbarch));
sp -= align_up (len, 16);
{
char *val;
struct value *arg = args[argnum];
- struct type *arg_type = check_typedef (VALUE_TYPE (arg));
+ struct type *arg_type = check_typedef (value_type (arg));
int len = TYPE_LENGTH (arg_type);
enum type_code typecode = TYPE_CODE (arg_type);
}
int
-mips_step_skips_delay (CORE_ADDR pc)
+mips_single_step_through_delay (struct gdbarch *gdbarch,
+ struct frame_info *frame)
{
- char buf[MIPS32_INSN_SIZE];
+ CORE_ADDR pc = get_frame_pc (frame);
+ char buf[MIPS_INSN32_SIZE];
/* There is no branch delay slot on MIPS16. */
if (mips_pc_is_mips16 (pc))
return 0;
- if (target_read_memory (pc, buf, sizeof buf) != 0)
- /* If error reading memory, guess that it is not a delayed branch. */
+ if (!safe_frame_unwind_memory (frame, pc, buf, sizeof buf))
+ /* If error reading memory, guess that it is not a delayed
+ branch. */
return 0;
return is_delayed (extract_unsigned_integer (buf, sizeof buf));
}
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
CORE_ADDR prid;
- prid = read_register (PRID_REGNUM);
+ prid = read_register (MIPS_PRID_REGNUM);
if ((prid & ~0xf) == 0x700)
tdep->mips_processor_reg_names = mips_r3041_reg_names;
address from those two instructions. */
CORE_ADDR target_pc = read_signed_register (2);
- t_inst inst;
+ ULONGEST inst;
int i;
/* See if the name of the target function is __fn_stub_*. */
/* Scan through this _fn_stub_ code for the lui/addiu pair.
The limit on the search is arbitrarily set to 20
instructions. FIXME. */
- for (i = 0, pc = 0; i < 20; i++, target_pc += MIPS32_INSN_SIZE)
+ for (i = 0, pc = 0; i < 20; i++, target_pc += MIPS_INSN32_SIZE)
{
inst = mips_fetch_instruction (target_pc);
if ((inst & 0xffff0000) == 0x3c010000) /* lui $at */
return 0; /* not a stub */
}
-
-/* Return non-zero if the PC is inside a call thunk (aka stub or trampoline).
- This implements the IN_SOLIB_CALL_TRAMPOLINE macro. */
-
-static int
-mips_in_call_stub (CORE_ADDR pc, char *name)
-{
- CORE_ADDR start_addr;
-
- /* Find the starting address of the function containing the PC. If the
- caller didn't give us a name, look it up at the same time. */
- if (find_pc_partial_function (pc, name ? NULL : &name, &start_addr, NULL) ==
- 0)
- return 0;
-
- if (strncmp (name, "__mips16_call_stub_", 19) == 0)
- {
- /* If the PC is in __mips16_call_stub_{1..10}, this is a call stub. */
- if (name[19] >= '0' && name[19] <= '9')
- return 1;
- /* If the PC at the start of __mips16_call_stub_{s,d}f_{0..10}, i.e.
- before the jal instruction, this is effectively a call stub. */
- else if (name[19] == 's' || name[19] == 'd')
- return pc == start_addr;
- }
-
- return 0; /* not a stub */
-}
-
-
-/* Return non-zero if the PC is inside a return thunk (aka stub or
- trampoline). */
-
-static int
-mips_in_solib_return_trampoline (CORE_ADDR pc, char *name)
-{
- CORE_ADDR start_addr;
-
- /* Find the starting address of the function containing the PC. */
- if (find_pc_partial_function (pc, NULL, &start_addr, NULL) == 0)
- return 0;
-
- /* If the PC is in __mips16_ret_{d,s}f, this is a return stub. */
- if (strcmp (name, "__mips16_ret_sf") == 0
- || strcmp (name, "__mips16_ret_df") == 0)
- return 1;
-
- /* If the PC is in __mips16_call_stub_{s,d}f_{0..10} but not at the start,
- i.e. after the jal instruction, this is effectively a return stub. */
- if (strncmp (name, "__mips16_call_stub_", 19) == 0
- && (name[19] == 's' || name[19] == 'd') && pc != start_addr)
- return 1;
-
- return 0; /* not a stub */
-}
-
-
-/* Return non-zero if the PC is in a library helper function that
- should be ignored. This implements the
- DEPRECATED_IGNORE_HELPER_CALL macro. */
-
-int
-mips_ignore_helper (CORE_ADDR pc)
-{
- char *name;
-
- /* Find the starting address and name of the function containing the PC. */
- if (find_pc_partial_function (pc, &name, NULL, NULL) == 0)
- return 0;
-
- /* If the PC is in __mips16_ret_{d,s}f, this is a library helper function
- that we want to ignore. */
- return (strcmp (name, "__mips16_ret_sf") == 0
- || strcmp (name, "__mips16_ret_df") == 0);
-}
-
-
/* Convert a dbx stab register number (from `r' declaration) to a GDB
[1 * NUM_REGS .. 2 * NUM_REGS) REGNUM. */
set_gdbarch_skip_trampoline_code (gdbarch, mips_skip_trampoline_code);
- /* NOTE drow/2004-02-11: We overload the core solib trampoline code
- to support MIPS16. This is a bad thing. Make sure not to do it
- if we have an OS ABI that actually supports shared libraries, since
- shared library support is more important. If we have an OS someday
- that supports both shared libraries and MIPS16, we'll have to find
- a better place for these. */
- if (info.osabi == GDB_OSABI_UNKNOWN)
- {
- set_gdbarch_in_solib_call_trampoline (gdbarch, mips_in_call_stub);
- set_gdbarch_in_solib_return_trampoline (gdbarch, mips_in_solib_return_trampoline);
- }
+ set_gdbarch_single_step_through_delay (gdbarch, mips_single_step_through_delay);
/* Hook in OS ABI-specific overrides, if they have been registered. */
gdbarch_init_osabi (info, gdbarch);
fprintf_unfiltered (file,
"mips_dump_tdep: mips_stack_argsize() = %d\n",
mips_stack_argsize (current_gdbarch));
- fprintf_unfiltered (file,
- "mips_dump_tdep: ADDR_BITS_REMOVE # %s\n",
- XSTRING (ADDR_BITS_REMOVE (ADDR)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: ATTACH_DETACH # %s\n",
- XSTRING (ATTACH_DETACH));
- fprintf_unfiltered (file,
- "mips_dump_tdep: DWARF_REG_TO_REGNUM # %s\n",
- XSTRING (DWARF_REG_TO_REGNUM (REGNUM)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: ECOFF_REG_TO_REGNUM # %s\n",
- XSTRING (ECOFF_REG_TO_REGNUM (REGNUM)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: FIRST_EMBED_REGNUM = %d\n",
- FIRST_EMBED_REGNUM);
- fprintf_unfiltered (file,
- "mips_dump_tdep: DEPRECATED_IGNORE_HELPER_CALL # %s\n",
- XSTRING (DEPRECATED_IGNORE_HELPER_CALL (PC)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: IN_SOLIB_CALL_TRAMPOLINE # %s\n",
- XSTRING (IN_SOLIB_CALL_TRAMPOLINE (PC, NAME)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: LAST_EMBED_REGNUM = %d\n",
- LAST_EMBED_REGNUM);
-#ifdef MACHINE_CPROC_FP_OFFSET
- fprintf_unfiltered (file,
- "mips_dump_tdep: MACHINE_CPROC_FP_OFFSET = %d\n",
- MACHINE_CPROC_FP_OFFSET);
-#endif
-#ifdef MACHINE_CPROC_PC_OFFSET
- fprintf_unfiltered (file,
- "mips_dump_tdep: MACHINE_CPROC_PC_OFFSET = %d\n",
- MACHINE_CPROC_PC_OFFSET);
-#endif
-#ifdef MACHINE_CPROC_SP_OFFSET
- fprintf_unfiltered (file,
- "mips_dump_tdep: MACHINE_CPROC_SP_OFFSET = %d\n",
- MACHINE_CPROC_SP_OFFSET);
-#endif
- fprintf_unfiltered (file, "mips_dump_tdep: MIPS_DEFAULT_ABI = FIXME!\n");
- fprintf_unfiltered (file,
- "mips_dump_tdep: MIPS_EFI_SYMBOL_NAME = multi-arch!!\n");
- fprintf_unfiltered (file,
- "mips_dump_tdep: MIPS_LAST_ARG_REGNUM = %d (%d regs)\n",
- MIPS_LAST_ARG_REGNUM,
- MIPS_LAST_ARG_REGNUM - MIPS_A0_REGNUM + 1);
- fprintf_unfiltered (file,
- "mips_dump_tdep: MIPS_NUMREGS = %d\n", MIPS_NUMREGS);
- fprintf_unfiltered (file,
- "mips_dump_tdep: mips_abi_regsize() = %d\n",
- mips_abi_regsize (current_gdbarch));
- fprintf_unfiltered (file,
- "mips_dump_tdep: PRID_REGNUM = %d\n", PRID_REGNUM);
- fprintf_unfiltered (file,
- "mips_dump_tdep: PROC_FRAME_ADJUST = function?\n");
- fprintf_unfiltered (file,
- "mips_dump_tdep: PROC_FRAME_OFFSET = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_FRAME_REG = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_FREG_MASK = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_FREG_OFFSET = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_HIGH_ADDR = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_LOW_ADDR = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_PC_REG = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_REG_MASK = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_REG_OFFSET = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PROC_SYMBOL = function?\n");
- fprintf_unfiltered (file, "mips_dump_tdep: PS_REGNUM = %d\n", PS_REGNUM);
-#ifdef SAVED_BYTES
- fprintf_unfiltered (file,
- "mips_dump_tdep: SAVED_BYTES = %d\n", SAVED_BYTES);
-#endif
-#ifdef SAVED_FP
- fprintf_unfiltered (file, "mips_dump_tdep: SAVED_FP = %d\n", SAVED_FP);
-#endif
-#ifdef SAVED_PC
- fprintf_unfiltered (file, "mips_dump_tdep: SAVED_PC = %d\n", SAVED_PC);
-#endif
- fprintf_unfiltered (file,
- "mips_dump_tdep: SETUP_ARBITRARY_FRAME # %s\n",
- XSTRING (SETUP_ARBITRARY_FRAME (NUMARGS, ARGS)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: SOFTWARE_SINGLE_STEP # %s\n",
- XSTRING (SOFTWARE_SINGLE_STEP (SIG, BP_P)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: SOFTWARE_SINGLE_STEP_P () = %d\n",
- SOFTWARE_SINGLE_STEP_P ());
- fprintf_unfiltered (file,
- "mips_dump_tdep: STAB_REG_TO_REGNUM # %s\n",
- XSTRING (STAB_REG_TO_REGNUM (REGNUM)));
-#ifdef STACK_END_ADDR
- fprintf_unfiltered (file,
- "mips_dump_tdep: STACK_END_ADDR = %d\n",
- STACK_END_ADDR);
-#endif
- fprintf_unfiltered (file,
- "mips_dump_tdep: STEP_SKIPS_DELAY # %s\n",
- XSTRING (STEP_SKIPS_DELAY (PC)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: STEP_SKIPS_DELAY_P = %d\n",
- STEP_SKIPS_DELAY_P);
- fprintf_unfiltered (file,
- "mips_dump_tdep: STOPPED_BY_WATCHPOINT # %s\n",
- XSTRING (STOPPED_BY_WATCHPOINT (WS)));
- fprintf_unfiltered (file,
- "mips_dump_tdep: TABULAR_REGISTER_OUTPUT = used?\n");
- fprintf_unfiltered (file,
- "mips_dump_tdep: TARGET_CAN_USE_HARDWARE_WATCHPOINT # %s\n",
- XSTRING (TARGET_CAN_USE_HARDWARE_WATCHPOINT
- (TYPE, CNT, OTHERTYPE)));
-#ifdef TRACE_CLEAR
- fprintf_unfiltered (file,
- "mips_dump_tdep: TRACE_CLEAR # %s\n",
- XSTRING (TRACE_CLEAR (THREAD, STATE)));
-#endif
-#ifdef TRACE_FLAVOR
- fprintf_unfiltered (file,
- "mips_dump_tdep: TRACE_FLAVOR = %d\n", TRACE_FLAVOR);
-#endif
-#ifdef TRACE_FLAVOR_SIZE
- fprintf_unfiltered (file,
- "mips_dump_tdep: TRACE_FLAVOR_SIZE = %d\n",
- TRACE_FLAVOR_SIZE);
-#endif
-#ifdef TRACE_SET
- fprintf_unfiltered (file,
- "mips_dump_tdep: TRACE_SET # %s\n",
- XSTRING (TRACE_SET (X, STATE)));
-#endif
-#ifdef UNUSED_REGNUM
- fprintf_unfiltered (file,
- "mips_dump_tdep: UNUSED_REGNUM = %d\n", UNUSED_REGNUM);
-#endif
- fprintf_unfiltered (file,
- "mips_dump_tdep: VM_MIN_ADDRESS = %ld\n",
- (long) VM_MIN_ADDRESS);
}
extern initialize_file_ftype _initialize_mips_tdep; /* -Wmissing-prototypes */
saved GP register size from information contained in the executable.\n\
(default: auto)", "\
Size of general purpose registers saved on the stack is %s.\n",
- NULL, NULL, &setmipscmdlist, &showmipscmdlist);
+ NULL, NULL, &setmipscmdlist, &showmipscmdlist,
+ NULL, NULL);
/* Allow the user to override the argument stack size. */
add_setshow_enum_cmd ("stack-arg-size", class_obscure,
auto - Allow GDB to determine the correct setting from the current\n\
target and executable (default)", "\
The amount of stack space reserved for each argument is %s.\n",
- NULL, NULL, &setmipscmdlist, &showmipscmdlist);
+ NULL, NULL, &setmipscmdlist, &showmipscmdlist,
+ NULL, NULL);
/* Allow the user to override the ABI. */
c = add_set_enum_cmd
projects / deliverable / binutils-gdb.git / blobdiff