+Mon May 8 11:19:47 2000 Andrew Cagney <cagney@b1.cygnus.com>
+
+ * mips-tdep.c (size_auto, size_32, size_64, size_enums): Rename
+ saved_gpreg_size_auto, saved_gpreg_size_32, saved_gpreg_size_64
+ and saved_gpreg_size_enums.
+ (mips_stack_argsize): Update. Cleanup.
+
+ * mips-tdep.c (STACK_ARGSIZE): Delete macro. Replaced by
+ MIPS_STACK_ARGSIZE.
+ (MIPS_NABI32): Delete macro. Replaced by
+ MIPS_REGS_HAVE_STACK_HOME_P.
+ (mips_push_arguments): Update.
+ (mips_push_arguments): Replace check for MIPS_EABI or MIPS_NABI32
+ with test for MIPS_REGS_HAVE_STACK_HOME_P.
+ (MIPS_REGS_HAVE_STACK_HOME_P): Define. Provide non- multi-arch
+ default.
+ (struct gdbarch_tdep): Add mips_regs_have_stack_home_p and
+ mips_default_stack_argsize.
+ (MIPS_STACK_ARGSIZE): Define as mips_stack_argsize.
+ (mips_stack_argsize_string): New static variable.
+ (mips_stack_argsize): New function, handle default case.
+ (__initialize_mips_tdep): Add command ``set mips stack-arg-size''
+ implemented as an enum using size_auto et.al.
+ (mips_gdbarch_init): Initialize mips_default_stack_argsize and
+ mips_regs_have_stack_home_p.
+
+ * config/mips/tm-irix5.h (MIPS_DEFAULT_SAVED_REGSIZE): Define as 8
+ for n32.
+ (MIPS_REGS_HAVE_STACK_HOME_P): Define as 0 for n32.
+
Mon May 8 00:49:32 2000 Andrew Cagney <cagney@b1.cygnus.com>
* procfs.c (PROCFS_TRACE): Delete definition.
int num_args;
};
-/* We allow the user to override MIPS_SAVED_REGSIZE, so define
- the subcommand enum settings allowed. */
-static char saved_gpreg_size_auto[] = "auto";
-static char saved_gpreg_size_32[] = "32";
-static char saved_gpreg_size_64[] = "64";
-
-static char *saved_gpreg_size_enums[] = {
- saved_gpreg_size_auto,
- saved_gpreg_size_32,
- saved_gpreg_size_64,
+/* Various MIPS ISA options (related to stack analysis) can be
+ overridden dynamically. Establish an enum/array for managing
+ them. */
+
+static char size_auto[] = "auto";
+static char size_32[] = "32";
+static char size_64[] = "64";
+
+static char *size_enums[] = {
+ size_auto,
+ size_32,
+ size_64,
0
};
-/* The current (string) value of saved_gpreg_size. */
-static char *mips_saved_regsize_string = saved_gpreg_size_auto;
-
/* Some MIPS boards don't support floating point while others only
support single-precision floating-point operations. See also
FP_REGISTER_DOUBLE. */
static enum mips_fpu_type mips_fpu_type = MIPS_DEFAULT_FPU_TYPE;
#define MIPS_FPU_TYPE mips_fpu_type
-#ifndef MIPS_DEFAULT_SAVED_REGSIZE
-#define MIPS_DEFAULT_SAVED_REGSIZE MIPS_REGSIZE
-#endif
-
-#define MIPS_SAVED_REGSIZE (mips_saved_regsize())
-
/* Do not use "TARGET_IS_MIPS64" to test the size of floating point registers */
#ifndef FP_REGISTER_DOUBLE
#define FP_REGISTER_DOUBLE (REGISTER_VIRTUAL_SIZE(FP0_REGNUM) == 8)
int mips_last_fp_arg_regnum;
int mips_default_saved_regsize;
int mips_fp_register_double;
+ int mips_regs_have_home_p;
+ int mips_default_stack_argsize;
};
#if GDB_MULTI_ARCH
#define MIPS_FPU_TYPE (gdbarch_tdep (current_gdbarch)->mips_fpu_type)
#endif
+/* Return the currently configured (or set) saved register size. */
+
#if GDB_MULTI_ARCH
#undef MIPS_DEFAULT_SAVED_REGSIZE
#define MIPS_DEFAULT_SAVED_REGSIZE (gdbarch_tdep (current_gdbarch)->mips_default_saved_regsize)
+#elif !defined (MIPS_DEFAULT_SAVED_REGSIZE)
+#define MIPS_DEFAULT_SAVED_REGSIZE MIPS_REGSIZE
#endif
+static char *mips_saved_regsize_string = size_auto;
+
+#define MIPS_SAVED_REGSIZE (mips_saved_regsize())
+
+static unsigned int
+mips_saved_regsize ()
+{
+ if (mips_saved_regsize_string == size_auto)
+ return MIPS_DEFAULT_SAVED_REGSIZE;
+ else if (mips_saved_regsize_string == size_64)
+ return 8;
+ else /* if (mips_saved_regsize_string == size_32) */
+ return 4;
+}
+
/* Indicate that the ABI makes use of double-precision registers
provided by the FPU (rather than combining pairs of registers to
form double-precision values). Do not use "TARGET_IS_MIPS64" to
#define FP_REGISTER_DOUBLE (gdbarch_tdep (current_gdbarch)->mips_fp_register_double)
#endif
+/* Does the caller allocate a ``home'' for each register used in the
+ function call? The N32 ABI and MIPS_EABI do not, the others do. */
+
+#if GDB_MULTI_ARCH
+#undef MIPS_REGS_HAVE_HOME_P
+#define MIPS_REGS_HAVE_HOME_P (gdbarch_tdep (current_gdbarch)->mips_regs_have_home_p)
+#elif !defined (MIPS_REGS_HAVE_HOME_P)
+#define MIPS_REGS_HAVE_HOME_P (!MIPS_EABI)
+#endif
+
+/* The amount of space reserved on the stack for registers. This is
+ different to MIPS_SAVED_REGSIZE as it determines the alignment of
+ data allocated after the registers have run out. */
+
+#if GDB_MULTI_ARCH
+#undef MIPS_DEFAULT_STACK_ARGSIZE
+#define MIPS_DEFAULT_STACK_ARGSIZE (gdbarch_tdep (current_gdbarch)->mips_default_statck_argsize)
+#elif !defined (MIPS_DEFAULT_STACK_ARGSIZE)
+#define MIPS_DEFAULT_STACK_ARGSIZE (MIPS_DEFAULT_SAVED_REGSIZE)
+#endif
+
+#define MIPS_STACK_ARGSIZE (mips_stack_argsize ())
+
+static char *mips_stack_argsize_string = size_auto;
+
+static unsigned int
+mips_stack_argsize (void)
+{
+ if (mips_stack_argsize_string == size_auto)
+ return MIPS_DEFAULT_STACK_ARGSIZE;
+ else if (mips_stack_argsize_string == size_64)
+ return 8;
+ else /* if (mips_stack_argsize_string == size_32) */
+ return 4;
+}
+
+
#define VM_MIN_ADDRESS (CORE_ADDR)0x400000
paddr_d (fi->extra_info->proc_desc->pdr.frameoffset));
}
-/* Return the currently configured (or set) saved register size */
-
-static unsigned int
-mips_saved_regsize ()
-{
- if (mips_saved_regsize_string == saved_gpreg_size_auto)
- return MIPS_DEFAULT_SAVED_REGSIZE;
- else if (mips_saved_regsize_string == saved_gpreg_size_64)
- return 8;
- else /* if (mips_saved_regsize_string == saved_gpreg_size_32) */
- return 4;
-}
-
/* Convert between RAW and VIRTUAL registers. The RAW register size
defines the remote-gdb packet. */
return create_new_frame (argv[0], argv[1]);
}
-/*
- * STACK_ARGSIZE -- how many bytes does a pushed function arg take up on the stack?
- *
- * For n32 ABI, eight.
- * For all others, he same as the size of a general register.
- */
-#if defined (_MIPS_SIM_NABI32) && _MIPS_SIM == _MIPS_SIM_NABI32
-#define MIPS_NABI32 1
-#define STACK_ARGSIZE 8
-#else
-#define MIPS_NABI32 0
-#define STACK_ARGSIZE MIPS_SAVED_REGSIZE
-#endif
-
CORE_ADDR
mips_push_arguments (nargs, args, sp, struct_return, struct_addr)
int nargs;
int longword_offset = 0;
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
{
- if (STACK_ARGSIZE == 8 &&
+ if (MIPS_STACK_ARGSIZE == 8 &&
(typecode == TYPE_CODE_INT ||
typecode == TYPE_CODE_PTR ||
typecode == TYPE_CODE_FLT) && len <= 4)
- longword_offset = STACK_ARGSIZE - len;
+ longword_offset = MIPS_STACK_ARGSIZE - len;
else if ((typecode == TYPE_CODE_STRUCT ||
typecode == TYPE_CODE_UNION) &&
- TYPE_LENGTH (arg_type) < STACK_ARGSIZE)
- longword_offset = STACK_ARGSIZE - len;
+ TYPE_LENGTH (arg_type) < MIPS_STACK_ARGSIZE)
+ longword_offset = MIPS_STACK_ARGSIZE - len;
}
write_memory (sp + stack_offset + longword_offset,
stack offset does not get incremented until after
we have used up the 8 parameter registers. */
- if (!(MIPS_EABI || MIPS_NABI32) ||
- argnum >= 8)
- stack_offset += ROUND_UP (partial_len, STACK_ARGSIZE);
+ if (MIPS_REGS_HAVE_HOME_P || argnum >= 8)
+ stack_offset += ROUND_UP (partial_len, MIPS_STACK_ARGSIZE);
}
}
}
set_gdbarch_long_long_bit (gdbarch, 64);
break;
}
+ tdep->mips_default_stack_argsize = tdep->mips_default_saved_regsize;
/* FIXME: jlarmour/2000-04-07: There *is* a flag EF_MIPS_32BIT_MODE
that could indicate -gp32 BUT gas/config/tc-mips.c contains the
tdep->mips_last_arg_regnum = 11;
/* EABI uses F12 through F19 for args */
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
+ /* EABI does not reserve home space for registers */
+ tdep->mips_regs_have_home_p = 0;
}
else
{
tdep->mips_last_arg_regnum = 7;
/* old ABI uses F12 through F15 for args */
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 15;
+ /* Old ABI reserves home space for registers */
+ tdep->mips_regs_have_home_p = 1;
}
/* enable/disable the MIPS FPU */
/* Allow the user to override the saved register size. */
add_show_from_set (add_set_enum_cmd ("saved-gpreg-size",
class_obscure,
- saved_gpreg_size_enums,
+ size_enums,
(char *) &mips_saved_regsize_string, "\
Set size of general purpose registers saved on the stack.\n\
This option can be set to one of:\n\
&setmipscmdlist),
&showmipscmdlist);
+ /* Allow the user to override the argument stack size. */
+ add_show_from_set (add_set_enum_cmd ("stack-arg-size",
+ class_obscure,
+ size_enums,
+ (char *) &mips_stack_argsize_string, "\
+Set the amount of stack space reserved for each argument.\n\
+This option can be set to one of:\n\
+ 32 - Force GDB to allocate 32-bit chunks per argument\n\
+ 64 - Force GDB to allocate 64-bit chunks per argument\n\
+ auto - Allow GDB to determine the correct setting from the current\n\
+ target and executable (default)",
+ &setmipscmdlist),
+ &showmipscmdlist);
+
/* Let the user turn off floating point and set the fence post for
heuristic_proc_start. */
projects / deliverable / binutils-gdb.git / commitdiff
