#define FP_REGISTER_DOUBLE (REGISTER_VIRTUAL_SIZE(FP0_REGNUM) == 8)
#endif
+static int mips_debug = 0;
/* MIPS specific per-architecture information */
struct gdbarch_tdep
int elf_flags;
/* mips options */
enum mips_abi mips_abi;
+ const char *mips_abi_string;
enum mips_fpu_type mips_fpu_type;
int mips_last_arg_regnum;
int mips_last_fp_arg_regnum;
int mips_regs_have_home_p;
int mips_default_stack_argsize;
int gdb_target_is_mips64;
+ int default_mask_address_p;
};
#if GDB_MULTI_ARCH
#define MIPS_SAVED_REGSIZE (mips_saved_regsize())
static unsigned int
-mips_saved_regsize ()
+mips_saved_regsize (void)
{
if (mips_saved_regsize_string == size_auto)
return MIPS_DEFAULT_SAVED_REGSIZE;
#define VM_MIN_ADDRESS (CORE_ADDR)0x400000
-#if 0
-static int mips_in_lenient_prologue (CORE_ADDR, CORE_ADDR);
-#endif
-
int gdb_print_insn_mips (bfd_vma, disassemble_info *);
static void mips_print_register (int, int);
char *tmp_mips_processor_type;
+/* The list of available "set mips " and "show mips " commands */
+
+static struct cmd_list_element *setmipscmdlist = NULL;
+static struct cmd_list_element *showmipscmdlist = NULL;
+
/* A set of original names, to be used when restoring back to generic
registers from a specific set. */
char *mips_generic_reg_names[] = MIPS_REGISTER_NAMES;
char **mips_processor_reg_names = mips_generic_reg_names;
-/* The list of available "set mips " and "show mips " commands */
-static struct cmd_list_element *setmipscmdlist = NULL;
-static struct cmd_list_element *showmipscmdlist = NULL;
-
char *
mips_register_name (i)
int i;
*linked_proc_desc_table = NULL;
void
-mips_print_extra_frame_info (fi)
- struct frame_info *fi;
+mips_print_extra_frame_info (struct frame_info *fi)
{
if (fi
&& fi->extra_info
static int mips64_transfers_32bit_regs_p = 0;
int
-mips_register_raw_size (reg_nr)
- int reg_nr;
+mips_register_raw_size (int reg_nr)
{
if (mips64_transfers_32bit_regs_p)
return REGISTER_VIRTUAL_SIZE (reg_nr);
}
int
-mips_register_convertible (reg_nr)
- int reg_nr;
+mips_register_convertible (int reg_nr)
{
if (mips64_transfers_32bit_regs_p)
return 0;
}
void
-mips_register_convert_to_virtual (n, virtual_type, raw_buf, virt_buf)
- int n;
- struct type *virtual_type;
- char *raw_buf;
- char *virt_buf;
+mips_register_convert_to_virtual (int n, struct type *virtual_type,
+ char *raw_buf, char *virt_buf)
{
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
memcpy (virt_buf,
}
void
-mips_register_convert_to_raw (virtual_type, n, virt_buf, raw_buf)
- struct type *virtual_type;
- int n;
- char *virt_buf;
- char *raw_buf;
+mips_register_convert_to_raw (struct type *virtual_type, int n,
+ char *virt_buf, char *raw_buf)
{
memset (raw_buf, 0, REGISTER_RAW_SIZE (n));
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
}
/* Should the upper word of 64-bit addresses be zeroed? */
-static int mask_address_p = 1;
+enum cmd_auto_boolean mask_address_var = CMD_AUTO_BOOLEAN_AUTO;
+
+static int
+mips_mask_address_p (void)
+{
+ switch (mask_address_var)
+ {
+ case CMD_AUTO_BOOLEAN_TRUE:
+ return 1;
+ case CMD_AUTO_BOOLEAN_FALSE:
+ return 0;
+ break;
+ case CMD_AUTO_BOOLEAN_AUTO:
+ return gdbarch_tdep (current_gdbarch)->default_mask_address_p;
+ default:
+ internal_error ("mips_mask_address_p: bad switch");
+ return -1;
+ }
+}
+
+static void
+show_mask_address (char *cmd, int from_tty)
+{
+ switch (mask_address_var)
+ {
+ case CMD_AUTO_BOOLEAN_TRUE:
+ printf_filtered ("The 32 bit mips address mask is enabled\n");
+ break;
+ case CMD_AUTO_BOOLEAN_FALSE:
+ printf_filtered ("The 32 bit mips address mask is disabled\n");
+ break;
+ case CMD_AUTO_BOOLEAN_AUTO:
+ printf_filtered ("The 32 bit address mask is set automatically. Currently %s\n",
+ mips_mask_address_p () ? "enabled" : "disabled");
+ break;
+ default:
+ internal_error ("show_mask_address: bad switch");
+ break;
+ }
+}
/* Should call_function allocate stack space for a struct return? */
int
return 0;
}
+/* MIPS believes that the PC has a sign extended value. Perhaphs the
+ all registers should be sign extended for simplicity? */
+
+static CORE_ADDR
+mips_read_pc (int pid)
+{
+ return read_signed_register_pid (PC_REGNUM, pid);
+}
/* This returns the PC of the first inst after the prologue. If we can't
find the prologue, then return 0. */
static CORE_ADDR
-after_prologue (pc, proc_desc)
- CORE_ADDR pc;
- mips_extra_func_info_t proc_desc;
+after_prologue (CORE_ADDR pc,
+ mips_extra_func_info_t proc_desc)
{
struct symtab_and_line sal;
CORE_ADDR func_addr, func_end;
for mips_find_saved_regs. */
static void
-mips32_decode_reg_save (inst, gen_mask, float_mask)
- t_inst inst;
- unsigned long *gen_mask;
- unsigned long *float_mask;
+mips32_decode_reg_save (t_inst inst, unsigned long *gen_mask,
+ unsigned long *float_mask)
{
int reg;
for mips_find_saved_regs. */
static void
-mips16_decode_reg_save (inst, gen_mask)
- t_inst inst;
- unsigned long *gen_mask;
+mips16_decode_reg_save (t_inst inst, unsigned long *gen_mask)
{
if ((inst & 0xf800) == 0xd000) /* sw reg,n($sp) */
{
is odd, assume it's a MIPS16 instruction; otherwise MIPS32. */
static t_inst
-mips_fetch_instruction (addr)
- CORE_ADDR addr;
+mips_fetch_instruction (CORE_ADDR addr)
{
char buf[MIPS_INSTLEN];
int instlen;
{
case 8: /* JR */
case 9: /* JALR */
- pc = read_register (rtype_rs (inst)); /* Set PC to that address */
+ /* Set PC to that address */
+ pc = read_signed_register (rtype_rs (inst));
break;
default:
pc += 4;
case 16: /* BLTZALL */
case 18: /* BLTZALL */
less_branch:
- if (read_register (itype_rs (inst)) < 0)
+ if (read_signed_register (itype_rs (inst)) < 0)
pc += mips32_relative_offset (inst) + 4;
else
pc += 8; /* after the delay slot */
case 17: /* BGEZAL */
case 19: /* BGEZALL */
greater_equal_branch:
- if (read_register (itype_rs (inst)) >= 0)
+ if (read_signed_register (itype_rs (inst)) >= 0)
pc += mips32_relative_offset (inst) + 4;
else
pc += 8; /* after the delay slot */
break; /* The new PC will be alternate mode */
case 4: /* BEQ , BEQL */
equal_branch:
- if (read_register (itype_rs (inst)) ==
- read_register (itype_rt (inst)))
+ if (read_signed_register (itype_rs (inst)) ==
+ read_signed_register (itype_rt (inst)))
pc += mips32_relative_offset (inst) + 4;
else
pc += 8;
break;
case 5: /* BNE , BNEL */
neq_branch:
- if (read_register (itype_rs (inst)) !=
- read_register (itype_rs (inst)))
+ if (read_signed_register (itype_rs (inst)) !=
+ read_signed_register (itype_rs (inst)))
pc += mips32_relative_offset (inst) + 4;
else
pc += 8;
break;
case 6: /* BLEZ , BLEZL */
less_zero_branch:
- if (read_register (itype_rs (inst) <= 0))
+ if (read_signed_register (itype_rs (inst) <= 0))
pc += mips32_relative_offset (inst) + 4;
else
pc += 8;
break;
case 7:
greater_branch: /* BGTZ BGTZL */
- if (read_register (itype_rs (inst) > 0))
+ if (read_signed_register (itype_rs (inst) > 0))
pc += mips32_relative_offset (inst) + 4;
else
pc += 8;
case 4: /* beqz */
upk.fmt = ritype;
unpack_mips16 (pc, &upk);
- reg = read_register (upk.regx);
+ reg = read_signed_register (upk.regx);
if (reg == 0)
pc += (upk.offset << 1) + 2;
else
case 5: /* bnez */
upk.fmt = ritype;
unpack_mips16 (pc, &upk);
- reg = read_register (upk.regx);
+ reg = read_signed_register (upk.regx);
if (reg != 0)
pc += (upk.offset << 1) + 2;
else
upk.fmt = i8type;
unpack_mips16 (pc, &upk);
/* upk.regx contains the opcode */
- reg = read_register (24); /* Test register is 24 */
+ reg = read_signed_register (24); /* Test register is 24 */
if (((upk.regx == 0) && (reg == 0)) /* BTEZ */
|| ((upk.regx == 1) && (reg != 0))) /* BTNEZ */
/* pc = add_offset_16(pc,upk.offset) ; */
reg = 31;
break; /* BOGUS Guess */
}
- pc = read_register (reg);
+ pc = read_signed_register (reg);
}
else
pc += 2;
NULL). */
void
-mips_find_saved_regs (fci)
- struct frame_info *fci;
+mips_find_saved_regs (struct frame_info *fci)
{
int ireg;
CORE_ADDR reg_position;
}
static CORE_ADDR
-read_next_frame_reg (fi, regno)
- struct frame_info *fi;
- int regno;
+read_next_frame_reg (struct frame_info *fi, int regno)
{
for (; fi; fi = fi->next)
{
return read_memory_integer (ADDR_BITS_REMOVE (fi->saved_regs[regno]), MIPS_SAVED_REGSIZE);
}
}
- return read_register (regno);
+ return read_signed_register (regno);
}
/* mips_addr_bits_remove - remove useless address bits */
CORE_ADDR
-mips_addr_bits_remove (addr)
- CORE_ADDR addr;
+mips_addr_bits_remove (CORE_ADDR addr)
{
if (GDB_TARGET_IS_MIPS64)
{
- if (mask_address_p && (addr >> 32 == (CORE_ADDR) 0xffffffff))
+ if (mips_mask_address_p () && (addr >> 32 == (CORE_ADDR) 0xffffffff))
{
/* This hack is a work-around for existing boards using
PMON, the simulator, and any other 64-bit targets that
hardware. Thus, the PC or SP are likely to have been
sign extended to all 1s by instruction sequences that
load 32-bit addresses. For example, a typical piece of
- code that loads an address is this: lui $r2, <upper 16
- bits> ori $r2, <lower 16 bits> But the lui sign-extends
- the value such that the upper 32 bits may be all 1s. The
- workaround is simply to mask off these bits. In the
- future, gcc may be changed to support true 64-bit
- addressing, and this masking will have to be disabled. */
+ code that loads an address is this:
+ lui $r2, <upper 16 bits>
+ ori $r2, <lower 16 bits>
+ But the lui sign-extends the value such that the upper 32
+ bits may be all 1s. The workaround is simply to mask off
+ these bits. In the future, gcc may be changed to support
+ true 64-bit addressing, and this masking will have to be
+ disabled. */
addr &= (CORE_ADDR) 0xffffffff;
}
}
- else
+ else if (mips_mask_address_p ())
{
+ /* FIXME: This is wrong! mips_addr_bits_remove() shouldn't be
+ masking off bits, instead, the actual target should be asking
+ for the address to be converted to a valid pointer. */
/* Even when GDB is configured for some 32-bit targets
(e.g. mips-elf), BFD is configured to handle 64-bit targets,
so CORE_ADDR is 64 bits. So we still have to mask off
}
void
-mips_init_frame_pc_first (fromleaf, prev)
- int fromleaf;
- struct frame_info *prev;
+mips_init_frame_pc_first (int fromleaf, struct frame_info *prev)
{
CORE_ADDR pc, tmp;
CORE_ADDR
-mips_frame_saved_pc (frame)
- struct frame_info *frame;
+mips_frame_saved_pc (struct frame_info *frame)
{
CORE_ADDR saved_pc;
mips_extra_func_info_t proc_desc = frame->extra_info->proc_desc;
This is a helper function for mips{16,32}_heuristic_proc_desc. */
static void
-set_reg_offset (regno, offset)
- int regno;
- CORE_ADDR offset;
+set_reg_offset (int regno, CORE_ADDR offset)
{
if (temp_saved_regs[regno] == 0)
temp_saved_regs[regno] = offset;
end of a function. */
static int
-mips_about_to_return (pc)
- CORE_ADDR pc;
+mips_about_to_return (CORE_ADDR pc)
{
if (pc_is_mips16 (pc))
/* This mips16 case isn't necessarily reliable. Sometimes the compiler
lines. */
static CORE_ADDR
-heuristic_proc_start (pc)
- CORE_ADDR pc;
+heuristic_proc_start (CORE_ADDR pc)
{
CORE_ADDR start_pc;
CORE_ADDR fence;
break;
}
-#if 0
- /* skip nops (usually 1) 0 - is this */
- while (start_pc < pc && read_memory_integer (start_pc, MIPS_INSTLEN) == 0)
- start_pc += MIPS_INSTLEN;
-#endif
return start_pc;
}
for mips16_heuristic_proc_desc. */
static int
-mips16_get_imm (prev_inst, inst, nbits, scale, is_signed)
- unsigned short prev_inst; /* previous instruction */
- unsigned short inst; /* current instruction */
- int nbits; /* number of bits in imm field */
- int scale; /* scale factor to be applied to imm */
- int is_signed; /* is the imm field signed? */
+mips16_get_imm (unsigned short prev_inst, /* previous instruction */
+ unsigned short inst, /* current instruction */
+ int nbits, /* number of bits in imm field */
+ int scale, /* scale factor to be applied to imm */
+ int is_signed) /* is the imm field signed? */
{
int offset;
stream from start_pc to limit_pc. */
static void
-mips16_heuristic_proc_desc (start_pc, limit_pc, next_frame, sp)
- CORE_ADDR start_pc, limit_pc;
- struct frame_info *next_frame;
- CORE_ADDR sp;
+mips16_heuristic_proc_desc (CORE_ADDR start_pc, CORE_ADDR limit_pc,
+ struct frame_info *next_frame, CORE_ADDR sp)
{
CORE_ADDR cur_pc;
CORE_ADDR frame_addr = 0; /* Value of $r17, used as frame pointer */
}
static mips_extra_func_info_t
-heuristic_proc_desc (start_pc, limit_pc, next_frame)
- CORE_ADDR start_pc, limit_pc;
- struct frame_info *next_frame;
+heuristic_proc_desc (CORE_ADDR start_pc, CORE_ADDR limit_pc,
+ struct frame_info *next_frame)
{
CORE_ADDR sp = read_next_frame_reg (next_frame, SP_REGNUM);
}
static mips_extra_func_info_t
-non_heuristic_proc_desc (pc, addrptr)
- CORE_ADDR pc;
- CORE_ADDR *addrptr;
+non_heuristic_proc_desc (CORE_ADDR pc, CORE_ADDR *addrptr)
{
CORE_ADDR startaddr;
mips_extra_func_info_t proc_desc;
static mips_extra_func_info_t
-find_proc_desc (pc, next_frame)
- CORE_ADDR pc;
- struct frame_info *next_frame;
+find_proc_desc (CORE_ADDR pc, struct frame_info *next_frame)
{
mips_extra_func_info_t proc_desc;
CORE_ADDR startaddr;
}
static CORE_ADDR
-get_frame_pointer (frame, proc_desc)
- struct frame_info *frame;
- mips_extra_func_info_t proc_desc;
+get_frame_pointer (struct frame_info *frame,
+ mips_extra_func_info_t proc_desc)
{
return ADDR_BITS_REMOVE (
read_next_frame_reg (frame, PROC_FRAME_REG (proc_desc)) +
mips_extra_func_info_t cached_proc_desc;
CORE_ADDR
-mips_frame_chain (frame)
- struct frame_info *frame;
+mips_frame_chain (struct frame_info *frame)
{
mips_extra_func_info_t proc_desc;
CORE_ADDR tmp;
}
void
-mips_init_extra_frame_info (fromleaf, fci)
- int fromleaf;
- struct frame_info *fci;
+mips_init_extra_frame_info (int fromleaf, struct frame_info *fci)
{
int regnum;
arguments without difficulty. */
struct frame_info *
-setup_arbitrary_frame (argc, argv)
- int argc;
- CORE_ADDR *argv;
+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
+ FP registers and, consequently this returns false - forces FP
+ arguments into integer registers. */
+
+static int
+fp_register_arg_p (enum type_code typecode, struct type *arg_type)
+{
+ return ((typecode == TYPE_CODE_FLT
+ || (MIPS_EABI
+ && (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION)
+ && TYPE_NFIELDS (arg_type) == 1
+ && TYPE_CODE (TYPE_FIELD_TYPE (arg_type, 0)) == TYPE_CODE_FLT))
+ && MIPS_FPU_TYPE != MIPS_FPU_NONE);
+}
+
CORE_ADDR
-mips_push_arguments (nargs, args, sp, struct_return, struct_addr)
- int nargs;
- value_ptr *args;
- CORE_ADDR sp;
- int struct_return;
- CORE_ADDR struct_addr;
+mips_push_arguments (int nargs,
+ value_ptr *args,
+ CORE_ADDR sp,
+ int struct_return,
+ CORE_ADDR struct_addr)
{
int argreg;
int float_argreg;
On at least one MIPS variant, stack frames need to be 128-bit
aligned, so we round to this widest known alignment. */
sp = ROUND_DOWN (sp, 16);
- struct_addr = ROUND_DOWN (struct_addr, MIPS_SAVED_REGSIZE);
+ struct_addr = ROUND_DOWN (struct_addr, 16);
/* Now make space on the stack for the args. We allocate more
than necessary for EABI, because the first few arguments are
passed in registers, but that's OK. */
for (argnum = 0; argnum < nargs; argnum++)
- len += ROUND_UP (TYPE_LENGTH (VALUE_TYPE (args[argnum])), MIPS_SAVED_REGSIZE);
+ len += ROUND_UP (TYPE_LENGTH (VALUE_TYPE (args[argnum])), MIPS_STACK_ARGSIZE);
sp -= ROUND_UP (len, 16);
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, "mips_push_arguments: sp=0x%lx allocated %d\n",
+ (long) sp, ROUND_UP (len, 16));
+
/* Initialize the integer and float register pointers. */
argreg = A0_REGNUM;
float_argreg = FPA0_REGNUM;
/* the struct_return pointer occupies the first parameter-passing reg */
if (struct_return)
- write_register (argreg++, struct_addr);
+ {
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog,
+ "mips_push_arguments: struct_return reg=%d 0x%lx\n",
+ argreg, (long) struct_addr);
+ write_register (argreg++, struct_addr);
+ if (MIPS_REGS_HAVE_HOME_P)
+ stack_offset += MIPS_STACK_ARGSIZE;
+ }
/* Now load as many as possible of the first arguments into
registers, and push the rest onto the stack. Loop thru args
int len = TYPE_LENGTH (arg_type);
enum type_code typecode = TYPE_CODE (arg_type);
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog,
+ "mips_push_arguments: %d len=%d type=%d",
+ argnum + 1, len, (int) typecode);
+
/* The EABI passes structures that do not fit in a register by
reference. In all other cases, pass the structure by value. */
- if (MIPS_EABI && len > MIPS_SAVED_REGSIZE &&
- (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION))
+ if (MIPS_EABI
+ && len > MIPS_SAVED_REGSIZE
+ && (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION))
{
store_address (valbuf, MIPS_SAVED_REGSIZE, VALUE_ADDRESS (arg));
typecode = TYPE_CODE_PTR;
len = MIPS_SAVED_REGSIZE;
val = valbuf;
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, " push");
}
else
val = (char *) VALUE_CONTENTS (arg);
/* 32-bit ABIs always start floating point arguments in an
- even-numbered floating point register. */
- if (!FP_REGISTER_DOUBLE && typecode == TYPE_CODE_FLT
- && (float_argreg & 1))
- float_argreg++;
+ even-numbered floating point register. Round the FP register
+ up before the check to see if there are any FP registers
+ left. Non MIPS_EABI targets also pass the FP in the integer
+ registers so also round up normal registers. */
+ if (!FP_REGISTER_DOUBLE
+ && fp_register_arg_p (typecode, arg_type))
+ {
+ if ((float_argreg & 1))
+ float_argreg++;
+ }
/* Floating point arguments passed in registers have to be
treated specially. On 32-bit architectures, doubles
don't use float registers for arguments. This duplication of
arguments in general registers can't hurt non-MIPS16 functions
because those registers are normally skipped. */
- if (typecode == TYPE_CODE_FLT
- && float_argreg <= MIPS_LAST_FP_ARG_REGNUM
- && MIPS_FPU_TYPE != MIPS_FPU_NONE)
+ /* MIPS_EABI squeeses a struct that contains a single floating
+ point value into an FP register instead of pusing it onto the
+ stack. */
+ if (fp_register_arg_p (typecode, arg_type)
+ && float_argreg <= MIPS_LAST_FP_ARG_REGNUM)
{
if (!FP_REGISTER_DOUBLE && len == 8)
{
/* Write the low word of the double to the even register(s). */
regval = extract_unsigned_integer (val + low_offset, 4);
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, " - fpreg=%d val=%s",
+ float_argreg, phex (regval, 4));
write_register (float_argreg++, regval);
if (!MIPS_EABI)
- write_register (argreg + 1, regval);
+ {
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, " - reg=%d val=%s",
+ argreg, phex (regval, 4));
+ write_register (argreg++, regval);
+ }
/* Write the high word of the double to the odd register(s). */
regval = extract_unsigned_integer (val + 4 - low_offset, 4);
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, " - fpreg=%d val=%s",
+ float_argreg, phex (regval, 4));
write_register (float_argreg++, regval);
if (!MIPS_EABI)
{
- write_register (argreg, regval);
- argreg += 2;
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, " - reg=%d val=%s",
+ argreg, phex (regval, 4));
+ write_register (argreg++, regval);
}
}
in a single register. */
/* On 32 bit ABI's the float_argreg is further adjusted
above to ensure that it is even register aligned. */
- CORE_ADDR regval = extract_address (val, len);
+ LONGEST regval = extract_unsigned_integer (val, len);
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, " - fpreg=%d val=%s",
+ float_argreg, phex (regval, len));
write_register (float_argreg++, regval);
if (!MIPS_EABI)
{
registers for each argument. The below is (my
guess) to ensure that the corresponding integer
register has reserved the same space. */
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, " - reg=%d val=%s",
+ argreg, phex (regval, len));
write_register (argreg, regval);
argreg += FP_REGISTER_DOUBLE ? 1 : 2;
}
}
+ /* Reserve space for the FP register. */
+ if (MIPS_REGS_HAVE_HOME_P)
+ stack_offset += ROUND_UP (len, MIPS_STACK_ARGSIZE);
}
else
{
are treated specially: Irix cc passes them in registers
where gcc sometimes puts them on the stack. For maximum
compatibility, we will put them in both places. */
-
int odd_sized_struct = ((len > MIPS_SAVED_REGSIZE) &&
(len % MIPS_SAVED_REGSIZE != 0));
+ /* Note: Floating-point values that didn't fit into an FP
+ register are only written to memory. */
while (len > 0)
{
+ /* Rememer if the argument was written to the stack. */
+ int stack_used_p = 0;
int partial_len = len < MIPS_SAVED_REGSIZE ? len : MIPS_SAVED_REGSIZE;
- if (argreg > MIPS_LAST_ARG_REGNUM || odd_sized_struct)
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, " -- partial=%d",
+ partial_len);
+
+ /* Write this portion of the argument to the stack. */
+ if (argreg > MIPS_LAST_ARG_REGNUM
+ || odd_sized_struct
+ || fp_register_arg_p (typecode, arg_type))
{
- /* Write this portion of the argument to the stack. */
/* Should shorter than int integer values be
promoted to int before being stored? */
-
int longword_offset = 0;
+ CORE_ADDR addr;
+ stack_used_p = 1;
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
{
if (MIPS_STACK_ARGSIZE == 8 &&
longword_offset = MIPS_STACK_ARGSIZE - len;
}
- write_memory (sp + stack_offset + longword_offset,
- val, partial_len);
+ if (mips_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog, " - stack_offset=0x%lx",
+ (long) stack_offset);
+ fprintf_unfiltered (gdb_stdlog, " longword_offset=0x%lx",
+ (long) longword_offset);
+ }
+
+ addr = sp + stack_offset + longword_offset;
+
+ if (mips_debug)
+ {
+ int i;
+ fprintf_unfiltered (gdb_stdlog, " @0x%lx ", (long) addr);
+ for (i = 0; i < partial_len; i++)
+ {
+ fprintf_unfiltered (gdb_stdlog, "%02x", val[i] & 0xff);
+ }
+ }
+ write_memory (addr, val, partial_len);
}
- /* Note!!! This is NOT an else clause.
- Odd sized structs may go thru BOTH paths. */
- if (argreg <= MIPS_LAST_ARG_REGNUM)
+ /* Note!!! This is NOT an else clause. Odd sized
+ structs may go thru BOTH paths. Floating point
+ arguments will not. */
+ /* Write this portion of the argument to a general
+ purpose register. */
+ if (argreg <= MIPS_LAST_ARG_REGNUM
+ && !fp_register_arg_p (typecode, arg_type))
{
- CORE_ADDR regval = extract_address (val, partial_len);
+ LONGEST regval = extract_unsigned_integer (val, partial_len);
/* A non-floating-point argument being passed in a
general register. If a struct or union, and if
regval <<= ((MIPS_SAVED_REGSIZE - partial_len) *
TARGET_CHAR_BIT);
+ if (mips_debug)
+ fprintf_filtered (gdb_stdlog, " - reg=%d val=%s",
+ argreg,
+ phex (regval, MIPS_SAVED_REGSIZE));
write_register (argreg, regval);
argreg++;
len -= partial_len;
val += partial_len;
- /* The offset onto the stack at which we will start
- copying parameters (after the registers are used up)
- begins at (4 * MIPS_REGSIZE) in the old ABI. This
- leaves room for the "home" area for register parameters.
+ /* Compute the the offset into the stack at which we
+ will copy the next parameter.
- In the new EABI (and the NABI32), the 8 register parameters
- do not have "home" stack space reserved for them, so the
- stack offset does not get incremented until after
- we have used up the 8 parameter registers. */
+ In older ABIs, the caller reserved space for
+ registers that contained arguments. This was loosely
+ refered to as their "home". Consequently, space is
+ always allocated.
- if (MIPS_REGS_HAVE_HOME_P || argnum >= 8)
+ In the new EABI (and the NABI32), the stack_offset
+ only needs to be adjusted when it has been used.. */
+
+ if (MIPS_REGS_HAVE_HOME_P || stack_used_p)
stack_offset += ROUND_UP (partial_len, MIPS_STACK_ARGSIZE);
}
}
+ if (mips_debug)
+ fprintf_unfiltered (gdb_stdlog, "\n");
}
/* Return adjusted stack pointer. */
}
CORE_ADDR
-mips_push_return_address (pc, sp)
- CORE_ADDR pc;
- CORE_ADDR sp;
+mips_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
/* Set the return address register to point to the entry
point of the program, where a breakpoint lies in wait. */
#define MASK(i,j) (((1 << ((j)+1))-1) ^ ((1 << (i))-1))
void
-mips_push_dummy_frame ()
+mips_push_dummy_frame (void)
{
int ireg;
struct linked_proc_info *link = (struct linked_proc_info *)
xmalloc (sizeof (struct linked_proc_info));
mips_extra_func_info_t proc_desc = &link->info;
- CORE_ADDR sp = ADDR_BITS_REMOVE (read_register (SP_REGNUM));
+ CORE_ADDR sp = ADDR_BITS_REMOVE (read_signed_register (SP_REGNUM));
CORE_ADDR old_sp = sp;
link->next = linked_proc_desc_table;
linked_proc_desc_table = link;
}
void
-mips_pop_frame ()
+mips_pop_frame (void)
{
register int regnum;
struct frame_info *frame = get_current_frame ();
}
static void
-mips_print_register (regnum, all)
- int regnum, all;
+mips_print_register (int regnum, int all)
{
char raw_buffer[MAX_REGISTER_RAW_SIZE];
Print regs in pretty columns. */
static int
-do_fp_register_row (regnum)
- int regnum;
+do_fp_register_row (int regnum)
{ /* do values for FP (float) regs */
char *raw_buffer[2];
char *dbl_buffer;
/* Print a row's worth of GP (int) registers, with name labels above */
static int
-do_gp_register_row (regnum)
- int regnum;
+do_gp_register_row (int regnum)
{
/* do values for GP (int) regs */
char raw_buffer[MAX_REGISTER_RAW_SIZE];
/* MIPS_DO_REGISTERS_INFO(): called by "info register" command */
void
-mips_do_registers_info (regnum, fpregs)
- int regnum;
- int fpregs;
+mips_do_registers_info (int regnum, int fpregs)
{
if (regnum != -1) /* do one specified register */
{
Can return -1, meaning no way to tell. */
int
-mips_frame_num_args (frame)
- struct frame_info *frame;
+mips_frame_num_args (struct frame_info *frame)
{
-#if 0 /* FIXME Use or lose this! */
- struct chain_info_t *p;
-
- p = mips_find_cached_frame (FRAME_FP (frame));
- if (p->valid)
- return p->the_info.numargs;
-#endif
return -1;
}
static int is_delayed (unsigned long);
static int
-is_delayed (insn)
- unsigned long insn;
+is_delayed (unsigned long insn)
{
int i;
for (i = 0; i < NUMOPCODES; ++i)
}
int
-mips_step_skips_delay (pc)
- CORE_ADDR pc;
+mips_step_skips_delay (CORE_ADDR pc)
{
char buf[MIPS_INSTLEN];
This is a helper function for mips_skip_prologue. */
static CORE_ADDR
-mips32_skip_prologue (pc, lenient)
- CORE_ADDR pc; /* starting PC to search from */
- int lenient;
+mips32_skip_prologue (CORE_ADDR pc)
{
t_inst inst;
CORE_ADDR end_pc;
inst = mips_fetch_instruction (pc);
high_word = (inst >> 16) & 0xffff;
-#if 0
- if (lenient && is_delayed (inst))
- continue;
-#endif
-
if (high_word == 0x27bd /* addiu $sp,$sp,offset */
|| high_word == 0x67bd) /* daddiu $sp,$sp,offset */
seen_sp_adjust = 1;
This is a helper function for mips_skip_prologue. */
static CORE_ADDR
-mips16_skip_prologue (pc, lenient)
- CORE_ADDR pc; /* starting PC to search from */
- int lenient;
+mips16_skip_prologue (CORE_ADDR pc)
{
CORE_ADDR end_pc;
int extend_bytes = 0;
delay slot of a non-prologue instruction). */
CORE_ADDR
-mips_skip_prologue (pc, lenient)
- CORE_ADDR pc;
- int lenient;
+mips_skip_prologue (CORE_ADDR pc)
{
/* See if we can determine the end of the prologue via the symbol table.
If so, then return either PC, or the PC after the prologue, whichever
instructions. */
if (pc_is_mips16 (pc))
- return mips16_skip_prologue (pc, lenient);
+ return mips16_skip_prologue (pc);
else
- return mips32_skip_prologue (pc, lenient);
-}
-
-#if 0
-/* The lenient prologue stuff should be superseded by the code in
- init_extra_frame_info which looks to see whether the stores mentioned
- in the proc_desc have actually taken place. */
-
-/* Is address PC in the prologue (loosely defined) for function at
- STARTADDR? */
-
-static int
-mips_in_lenient_prologue (startaddr, pc)
- CORE_ADDR startaddr;
- CORE_ADDR pc;
-{
- CORE_ADDR end_prologue = mips_skip_prologue (startaddr, 1);
- return pc >= startaddr && pc < end_prologue;
+ return mips32_skip_prologue (pc);
}
-#endif
/* Determine how a return value is stored within the MIPS register
file, given the return type `valtype'. */
int buf_offset;
};
-static void return_value_location (struct type *, struct return_value_word *,
- struct return_value_word *);
-
static void
-return_value_location (valtype, hi, lo)
- struct type *valtype;
- struct return_value_word *hi;
- struct return_value_word *lo;
+return_value_location (struct type *valtype,
+ struct return_value_word *hi,
+ struct return_value_word *lo)
{
int len = TYPE_LENGTH (valtype);
copy its value into `valbuf'. */
void
-mips_extract_return_value (valtype, regbuf, valbuf)
- struct type *valtype;
- char regbuf[REGISTER_BYTES];
- char *valbuf;
+mips_extract_return_value (struct type *valtype,
+ char regbuf[REGISTER_BYTES],
+ char *valbuf)
{
struct return_value_word lo;
struct return_value_word hi;
memcpy (valbuf + hi.buf_offset,
regbuf + REGISTER_BYTE (hi.reg) + hi.reg_offset,
hi.len);
-
-#if 0
- int regnum;
- int offset = 0;
- int len = TYPE_LENGTH (valtype);
-
- regnum = 2;
- if (TYPE_CODE (valtype) == TYPE_CODE_FLT
- && (MIPS_FPU_TYPE == MIPS_FPU_DOUBLE
- || (MIPS_FPU_TYPE == MIPS_FPU_SINGLE
- && len <= MIPS_FPU_SINGLE_REGSIZE)))
- regnum = FP0_REGNUM;
-
- if (TARGET_BYTE_ORDER == BIG_ENDIAN)
- { /* "un-left-justify" the value from the register */
- if (len < REGISTER_RAW_SIZE (regnum))
- offset = REGISTER_RAW_SIZE (regnum) - len;
- if (len > REGISTER_RAW_SIZE (regnum) && /* odd-size structs */
- len < REGISTER_RAW_SIZE (regnum) * 2 &&
- (TYPE_CODE (valtype) == TYPE_CODE_STRUCT ||
- TYPE_CODE (valtype) == TYPE_CODE_UNION))
- offset = 2 * REGISTER_RAW_SIZE (regnum) - len;
- }
- memcpy (valbuf, regbuf + REGISTER_BYTE (regnum) + offset, len);
- REGISTER_CONVERT_TO_TYPE (regnum, valtype, valbuf);
-#endif
}
/* Given a return value in `valbuf' with a type `valtype', write it's
value into the appropriate register. */
void
-mips_store_return_value (valtype, valbuf)
- struct type *valtype;
- char *valbuf;
+mips_store_return_value (struct type *valtype, char *valbuf)
{
char raw_buffer[MAX_REGISTER_RAW_SIZE];
struct return_value_word lo;
raw_buffer,
REGISTER_RAW_SIZE (hi.reg));
}
-
-#if 0
- int regnum;
- int offset = 0;
- int len = TYPE_LENGTH (valtype);
- char raw_buffer[MAX_REGISTER_RAW_SIZE];
-
- regnum = 2;
- if (TYPE_CODE (valtype) == TYPE_CODE_FLT
- && (MIPS_FPU_TYPE == MIPS_FPU_DOUBLE
- || (MIPS_FPU_TYPE == MIPS_FPU_SINGLE
- && len <= MIPS_REGSIZE)))
- regnum = FP0_REGNUM;
-
- if (TARGET_BYTE_ORDER == BIG_ENDIAN)
- { /* "left-justify" the value in the register */
- if (len < REGISTER_RAW_SIZE (regnum))
- offset = REGISTER_RAW_SIZE (regnum) - len;
- if (len > REGISTER_RAW_SIZE (regnum) && /* odd-size structs */
- len < REGISTER_RAW_SIZE (regnum) * 2 &&
- (TYPE_CODE (valtype) == TYPE_CODE_STRUCT ||
- TYPE_CODE (valtype) == TYPE_CODE_UNION))
- offset = 2 * REGISTER_RAW_SIZE (regnum) - len;
- }
- memcpy (raw_buffer + offset, valbuf, len);
- REGISTER_CONVERT_FROM_TYPE (regnum, valtype, raw_buffer);
- write_register_bytes (REGISTER_BYTE (regnum), raw_buffer,
- len > REGISTER_RAW_SIZE (regnum) ?
- len : REGISTER_RAW_SIZE (regnum));
-#endif
}
/* Exported procedure: Is PC in the signal trampoline code */
int
-in_sigtramp (pc, ignore)
- CORE_ADDR pc;
- char *ignore; /* function name */
+in_sigtramp (CORE_ADDR pc, char *ignore)
{
if (sigtramp_address == 0)
fixup_sigtramp ();
/* Root of all "set mips "/"show mips " commands. This will eventually be
used for all MIPS-specific commands. */
-static void show_mips_command (char *, int);
static void
-show_mips_command (args, from_tty)
- char *args;
- int from_tty;
+show_mips_command (char *args, int from_tty)
{
help_list (showmipscmdlist, "show mips ", all_commands, gdb_stdout);
}
-static void set_mips_command (char *, int);
static void
-set_mips_command (args, from_tty)
- char *args;
- int from_tty;
+set_mips_command (char *args, int from_tty)
{
printf_unfiltered ("\"set mips\" must be followed by an appropriate subcommand.\n");
help_list (setmipscmdlist, "set mips ", all_commands, gdb_stdout);
/* Commands to show/set the MIPS FPU type. */
-static void show_mipsfpu_command (char *, int);
static void
-show_mipsfpu_command (args, from_tty)
- char *args;
- int from_tty;
+show_mipsfpu_command (char *args, int from_tty)
{
char *msg;
char *fpu;
}
-static void set_mipsfpu_command (char *, int);
static void
-set_mipsfpu_command (args, from_tty)
- char *args;
- int from_tty;
+set_mipsfpu_command (char *args, int from_tty)
{
printf_unfiltered ("\"set mipsfpu\" must be followed by \"double\", \"single\",\"none\" or \"auto\".\n");
show_mipsfpu_command (args, from_tty);
}
-static void set_mipsfpu_single_command (char *, int);
static void
-set_mipsfpu_single_command (args, from_tty)
- char *args;
- int from_tty;
+set_mipsfpu_single_command (char *args, int from_tty)
{
mips_fpu_type = MIPS_FPU_SINGLE;
mips_fpu_type_auto = 0;
}
}
-static void set_mipsfpu_double_command (char *, int);
static void
-set_mipsfpu_double_command (args, from_tty)
- char *args;
- int from_tty;
+set_mipsfpu_double_command (char *args, int from_tty)
{
mips_fpu_type = MIPS_FPU_DOUBLE;
mips_fpu_type_auto = 0;
}
}
-static void set_mipsfpu_none_command (char *, int);
static void
-set_mipsfpu_none_command (args, from_tty)
- char *args;
- int from_tty;
+set_mipsfpu_none_command (char *args, int from_tty)
{
mips_fpu_type = MIPS_FPU_NONE;
mips_fpu_type_auto = 0;
}
}
-static void set_mipsfpu_auto_command (char *, int);
static void
-set_mipsfpu_auto_command (args, from_tty)
- char *args;
- int from_tty;
+set_mipsfpu_auto_command (char *args, int from_tty)
{
mips_fpu_type_auto = 1;
}
/* Command to set the processor type. */
void
-mips_set_processor_type_command (args, from_tty)
- char *args;
- int from_tty;
+mips_set_processor_type_command (char *args, int from_tty)
{
int i;
}
static void
-mips_show_processor_type_command (args, from_tty)
- char *args;
- int from_tty;
+mips_show_processor_type_command (char *args, int from_tty)
{
}
/* Modify the actual processor type. */
int
-mips_set_processor_type (str)
- char *str;
+mips_set_processor_type (char *str)
{
int i, j;
processor id. */
char *
-mips_read_processor_type ()
+mips_read_processor_type (void)
{
CORE_ADDR prid;
callable as an sfunc. */
static void
-reinit_frame_cache_sfunc (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+reinit_frame_cache_sfunc (char *args, int from_tty,
+ struct cmd_list_element *c)
{
reinit_frame_cache ();
}
int
-gdb_print_insn_mips (memaddr, info)
- bfd_vma memaddr;
- disassemble_info *info;
+gdb_print_insn_mips (bfd_vma memaddr, disassemble_info *info)
{
mips_extra_func_info_t proc_desc;
it's definitely a 16-bit function. Otherwise, we have to just
guess that if the address passed in is odd, it's 16-bits. */
if (proc_desc)
- info->mach = pc_is_mips16 (PROC_LOW_ADDR (proc_desc)) ? 16 : TM_PRINT_INSN_MACH;
+ info->mach = pc_is_mips16 (PROC_LOW_ADDR (proc_desc)) ?
+ bfd_mach_mips16 : TM_PRINT_INSN_MACH;
else
- info->mach = pc_is_mips16 (memaddr) ? 16 : TM_PRINT_INSN_MACH;
+ info->mach = pc_is_mips16 (memaddr) ?
+ bfd_mach_mips16 : TM_PRINT_INSN_MACH;
/* Round down the instruction address to the appropriate boundary. */
- memaddr &= (info->mach == 16 ? ~1 : ~3);
+ memaddr &= (info->mach == bfd_mach_mips16 ? ~1 : ~3);
/* Call the appropriate disassembler based on the target endian-ness. */
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
breakpoint should be inserted. */
unsigned char *
-mips_breakpoint_from_pc (pcptr, lenptr)
- CORE_ADDR *pcptr;
- int *lenptr;
+mips_breakpoint_from_pc (CORE_ADDR * pcptr, int *lenptr)
{
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
{
*/
CORE_ADDR
-mips_skip_stub (pc)
- CORE_ADDR pc;
+mips_skip_stub (CORE_ADDR pc)
{
char *name;
CORE_ADDR start_addr;
target PC is in $31 ($ra). */
if (strcmp (name, "__mips16_ret_sf") == 0
|| strcmp (name, "__mips16_ret_df") == 0)
- return read_register (RA_REGNUM);
+ return read_signed_register (RA_REGNUM);
if (strncmp (name, "__mips16_call_stub_", 19) == 0)
{
/* If the PC is in __mips16_call_stub_{1..10}, this is a call stub
and the target PC is in $2. */
if (name[19] >= '0' && name[19] <= '9')
- return read_register (2);
+ return read_signed_register (2);
/* 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
So scan down to the lui/addi and extract the target
address from those two instructions. */
- CORE_ADDR target_pc = read_register (2);
+ CORE_ADDR target_pc = read_signed_register (2);
t_inst inst;
int i;
else
/* This is the 'return' part of a call stub. The return
address is in $r18. */
- return read_register (18);
+ return read_signed_register (18);
}
}
return 0; /* not a stub */
This implements the IN_SOLIB_CALL_TRAMPOLINE macro. */
int
-mips_in_call_stub (pc, name)
- CORE_ADDR pc;
- char *name;
+mips_in_call_stub (CORE_ADDR pc, char *name)
{
CORE_ADDR start_addr;
This implements the IN_SOLIB_RETURN_TRAMPOLINE macro. */
int
-mips_in_return_stub (pc, name)
- CORE_ADDR pc;
- char *name;
+mips_in_return_stub (CORE_ADDR pc, char *name)
{
CORE_ADDR start_addr;
be ignored. This implements the IGNORE_HELPER_CALL macro. */
int
-mips_ignore_helper (pc)
- CORE_ADDR pc;
+mips_ignore_helper (CORE_ADDR pc)
{
char *name;
whose address is the location where the breakpoint should be placed. */
CORE_ADDR
-mips_call_dummy_address ()
+mips_call_dummy_address (void)
{
struct minimal_symbol *sym;
macro - REGISTER_STACK_SIZE(). */
static void
-mips_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
- char *raw_buffer;
- int *optimized;
- CORE_ADDR *addrp;
- struct frame_info *frame;
- int regnum;
- enum lval_type *lval;
+mips_get_saved_register (char *raw_buffer,
+ int *optimized,
+ CORE_ADDR *addrp,
+ struct frame_info *frame,
+ int regnum,
+ enum lval_type *lval)
{
CORE_ADDR addr;
*addrp = addr;
}
-static gdbarch_init_ftype mips_gdbarch_init;
+/* Immediately after a function call, return the saved pc.
+ Can't always go through the frames for this because on some machines
+ the new frame is not set up until the new function executes
+ some instructions. */
+
+static CORE_ADDR
+mips_saved_pc_after_call (struct frame_info *frame)
+{
+ return read_signed_register (RA_REGNUM);
+}
+
+
static struct gdbarch *
-mips_gdbarch_init (info, arches)
- struct gdbarch_info info;
- struct gdbarch_list *arches;
+mips_gdbarch_init (struct gdbarch_info info,
+ struct gdbarch_list *arches)
{
static LONGEST mips_call_dummy_words[] =
{0};
struct gdbarch *gdbarch;
struct gdbarch_tdep *tdep;
int elf_flags;
- int ef_mips_bitptrs;
- int ef_mips_arch;
enum mips_abi mips_abi;
/* Extract the elf_flags if available */
mips_abi = MIPS_ABI_EABI64;
break;
default:
- mips_abi = MIPS_ABI_UNKNOWN;
+ if ((elf_flags & EF_MIPS_ABI2))
+ mips_abi = MIPS_ABI_N32;
+ else
+ mips_abi = MIPS_ABI_UNKNOWN;
break;
}
+
/* Try the architecture for any hint of the corect ABI */
if (mips_abi == MIPS_ABI_UNKNOWN
&& info.bfd_arch_info != NULL
if (gdbarch_debug)
{
fprintf_unfiltered (gdb_stdlog,
- "mips_gdbarch_init: elf_flags = %08x\n",
+ "mips_gdbarch_init: elf_flags = 0x%08x\n",
elf_flags);
- fprintf_unfiltered (gdb_stdlog,
- "mips_gdbarch_init: ef_mips_arch = %d\n",
- ef_mips_arch);
- fprintf_unfiltered (gdb_stdlog,
- "mips_gdbarch_init: ef_mips_bitptrs = %d\n",
- ef_mips_bitptrs);
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: mips_abi = %d\n",
mips_abi);
switch (mips_abi)
{
case MIPS_ABI_O32:
+ tdep->mips_abi_string = "o32";
tdep->mips_default_saved_regsize = 4;
tdep->mips_default_stack_argsize = 4;
tdep->mips_fp_register_double = 0;
- tdep->mips_last_arg_regnum = ZERO_REGNUM + 7;
- tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 15;
+ tdep->mips_last_arg_regnum = A0_REGNUM + 4 - 1;
+ tdep->mips_last_fp_arg_regnum = FPA0_REGNUM + 4 - 1;
tdep->mips_regs_have_home_p = 1;
tdep->gdb_target_is_mips64 = 0;
+ tdep->default_mask_address_p = 0;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
case MIPS_ABI_O64:
+ tdep->mips_abi_string = "o64";
tdep->mips_default_saved_regsize = 8;
tdep->mips_default_stack_argsize = 8;
tdep->mips_fp_register_double = 1;
- tdep->mips_last_arg_regnum = ZERO_REGNUM + 7;
- tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 15;
+ tdep->mips_last_arg_regnum = A0_REGNUM + 4 - 1;
+ tdep->mips_last_fp_arg_regnum = FPA0_REGNUM + 4 - 1;
tdep->mips_regs_have_home_p = 1;
tdep->gdb_target_is_mips64 = 1;
+ tdep->default_mask_address_p = 0;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
case MIPS_ABI_EABI32:
+ tdep->mips_abi_string = "eabi32";
tdep->mips_default_saved_regsize = 4;
tdep->mips_default_stack_argsize = 4;
tdep->mips_fp_register_double = 0;
- tdep->mips_last_arg_regnum = ZERO_REGNUM + 11;
- tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
+ tdep->mips_last_arg_regnum = A0_REGNUM + 8 - 1;
+ tdep->mips_last_fp_arg_regnum = FPA0_REGNUM + 8 - 1;
tdep->mips_regs_have_home_p = 0;
tdep->gdb_target_is_mips64 = 0;
+ tdep->default_mask_address_p = 0;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
case MIPS_ABI_EABI64:
+ tdep->mips_abi_string = "eabi64";
tdep->mips_default_saved_regsize = 8;
tdep->mips_default_stack_argsize = 8;
tdep->mips_fp_register_double = 1;
- tdep->mips_last_arg_regnum = ZERO_REGNUM + 11;
- tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
+ tdep->mips_last_arg_regnum = A0_REGNUM + 8 - 1;
+ tdep->mips_last_fp_arg_regnum = FPA0_REGNUM + 8 - 1;
tdep->mips_regs_have_home_p = 0;
tdep->gdb_target_is_mips64 = 1;
+ tdep->default_mask_address_p = 0;
set_gdbarch_long_bit (gdbarch, 64);
set_gdbarch_ptr_bit (gdbarch, 64);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
case MIPS_ABI_N32:
+ tdep->mips_abi_string = "n32";
tdep->mips_default_saved_regsize = 4;
tdep->mips_default_stack_argsize = 8;
tdep->mips_fp_register_double = 1;
- tdep->mips_last_arg_regnum = ZERO_REGNUM + 11;
- tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
+ tdep->mips_last_arg_regnum = A0_REGNUM + 8 - 1;
+ tdep->mips_last_fp_arg_regnum = FPA0_REGNUM + 8 - 1;
tdep->mips_regs_have_home_p = 0;
tdep->gdb_target_is_mips64 = 0;
+ tdep->default_mask_address_p = 0;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
default:
+ tdep->mips_abi_string = "default";
tdep->mips_default_saved_regsize = MIPS_REGSIZE;
tdep->mips_default_stack_argsize = MIPS_REGSIZE;
tdep->mips_fp_register_double = (REGISTER_VIRTUAL_SIZE (FP0_REGNUM) == 8);
- tdep->mips_last_arg_regnum = ZERO_REGNUM + 11;
- tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
+ tdep->mips_last_arg_regnum = A0_REGNUM + 8 - 1;
+ tdep->mips_last_fp_arg_regnum = FPA0_REGNUM + 8 - 1;
tdep->mips_regs_have_home_p = 1;
tdep->gdb_target_is_mips64 = 0;
+ tdep->default_mask_address_p = 0;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
the current gcc - it would make GDB treat these 64-bit programs
as 32-bit programs by default. */
- /* determine the ISA */
- switch (elf_flags & EF_MIPS_ARCH)
- {
- case E_MIPS_ARCH_1:
- ef_mips_arch = 1;
- break;
- case E_MIPS_ARCH_2:
- ef_mips_arch = 2;
- break;
- case E_MIPS_ARCH_3:
- ef_mips_arch = 3;
- break;
- case E_MIPS_ARCH_4:
- ef_mips_arch = 0;
- break;
- default:
- break;
- }
-
-#if 0
- /* determine the size of a pointer */
- if ((elf_flags & EF_MIPS_32BITPTRS))
- {
- ef_mips_bitptrs = 32;
- }
- else if ((elf_flags & EF_MIPS_64BITPTRS))
- {
- ef_mips_bitptrs = 64;
- }
- else
- {
- ef_mips_bitptrs = 0;
- }
-#endif
-
/* enable/disable the MIPS FPU */
if (!mips_fpu_type_auto)
tdep->mips_fpu_type = mips_fpu_type;
#undef/#define REGISTER_NAMES and the new REGISTER_NAME(nr).
Further work on it is required. */
set_gdbarch_register_name (gdbarch, mips_register_name);
- set_gdbarch_read_pc (gdbarch, generic_target_read_pc);
+ set_gdbarch_read_pc (gdbarch, mips_read_pc);
set_gdbarch_write_pc (gdbarch, generic_target_write_pc);
set_gdbarch_read_fp (gdbarch, generic_target_read_fp);
set_gdbarch_write_fp (gdbarch, generic_target_write_fp);
set_gdbarch_frame_chain_valid (gdbarch, func_frame_chain_valid);
set_gdbarch_get_saved_register (gdbarch, mips_get_saved_register);
+ set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
+ set_gdbarch_breakpoint_from_pc (gdbarch, mips_breakpoint_from_pc);
+ set_gdbarch_decr_pc_after_break (gdbarch, 0);
+ set_gdbarch_ieee_float (gdbarch, 1);
+
+ set_gdbarch_skip_prologue (gdbarch, mips_skip_prologue);
+ set_gdbarch_saved_pc_after_call (gdbarch, mips_saved_pc_after_call);
+
return gdbarch;
}
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
if (tdep != NULL)
{
+ int ef_mips_arch;
+ int ef_mips_32bitmode;
+ /* determine the ISA */
+ switch (tdep->elf_flags & EF_MIPS_ARCH)
+ {
+ case E_MIPS_ARCH_1:
+ ef_mips_arch = 1;
+ break;
+ case E_MIPS_ARCH_2:
+ ef_mips_arch = 2;
+ break;
+ case E_MIPS_ARCH_3:
+ ef_mips_arch = 3;
+ break;
+ case E_MIPS_ARCH_4:
+ ef_mips_arch = 0;
+ break;
+ default:
+ break;
+ }
+ /* determine the size of a pointer */
+ ef_mips_32bitmode = (tdep->elf_flags & EF_MIPS_32BITMODE);
fprintf_unfiltered (file,
"mips_dump_tdep: tdep->elf_flags = 0x%x\n",
tdep->elf_flags);
fprintf_unfiltered (file,
- "mips_dump_tdep: tdep->mips_abi = %d\n",
- tdep->mips_abi);
+ "mips_dump_tdep: ef_mips_32bitmode = %d\n",
+ ef_mips_32bitmode);
+ fprintf_unfiltered (file,
+ "mips_dump_tdep: ef_mips_arch = %d\n",
+ ef_mips_arch);
+ fprintf_unfiltered (file,
+ "mips_dump_tdep: tdep->mips_abi = %d (%s)\n",
+ tdep->mips_abi,
+ tdep->mips_abi_string);
+ fprintf_unfiltered (file,
+ "mips_dump_tdep: mips_mask_address_p() %d (default %d)\n",
+ mips_mask_address_p (),
+ tdep->default_mask_address_p);
}
fprintf_unfiltered (file,
"mips_dump_tdep: FP_REGISTER_DOUBLE = %d\n",
"mips_dump_tdep: MIPS_EABI = %d\n",
MIPS_EABI);
fprintf_unfiltered (file,
- "mips_dump_tdep: MIPS_LAST_FP_ARG_REGNUM = %d\n",
- MIPS_LAST_FP_ARG_REGNUM);
+ "mips_dump_tdep: MIPS_LAST_FP_ARG_REGNUM = %d (%d regs)\n",
+ MIPS_LAST_FP_ARG_REGNUM,
+ MIPS_LAST_FP_ARG_REGNUM - FPA0_REGNUM + 1);
fprintf_unfiltered (file,
"mips_dump_tdep: MIPS_FPU_TYPE = %d (%s)\n",
MIPS_FPU_TYPE,
"mips_dump_tdep: MIPS_INSTLEN = %d\n",
MIPS_INSTLEN);
fprintf_unfiltered (file,
- "mips_dump_tdep: MIPS_LAST_ARG_REGNUM = %d\n",
- MIPS_LAST_ARG_REGNUM);
+ "mips_dump_tdep: MIPS_LAST_ARG_REGNUM = %d (%d regs)\n",
+ MIPS_LAST_ARG_REGNUM,
+ MIPS_LAST_ARG_REGNUM - A0_REGNUM + 1);
fprintf_unfiltered (file,
"mips_dump_tdep: MIPS_NUMREGS = %d\n",
MIPS_NUMREGS);
}
void
-_initialize_mips_tdep ()
+_initialize_mips_tdep (void)
{
static struct cmd_list_element *mipsfpulist = NULL;
struct cmd_list_element *c;
/* Allow the user to control whether the upper bits of 64-bit
addresses should be zeroed. */
- add_show_from_set
- (add_set_cmd ("mask-address", no_class, var_boolean, (char *) &mask_address_p,
- "Set zeroing of upper 32 bits of 64-bit addresses.\n\
-Use \"on\" to enable the masking, and \"off\" to disable it.\n\
-Without an argument, zeroing of upper address bits is enabled.", &setlist),
- &showlist);
+ c = add_set_auto_boolean_cmd ("mask-address", no_class, &mask_address_var,
+ "Set zeroing of upper 32 bits of 64-bit addresses.\n\
+Use \"on\" to enable the masking, \"off\" to disable it and \"auto\" to allow GDB to determine\n\
+the correct value.\n",
+ &setmipscmdlist);
+ add_cmd ("mask-address", no_class, show_mask_address,
+ "Show current mask-address value", &showmipscmdlist);
/* Allow the user to control the size of 32 bit registers within the
raw remote packet. */
64 bits for others. Use \"off\" to disable compatibility mode",
&setlist),
&showlist);
+
+ /* Debug this files internals. */
+ add_show_from_set (add_set_cmd ("mips", class_maintenance, var_zinteger,
+ &mips_debug, "Set mips debugging.\n\
+When non-zero, mips specific debugging is enabled.", &setdebuglist),
+ &showdebuglist);
}
+
projects / deliverable / binutils-gdb.git / blobdiff