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2002-08-15 Michael Snyder <msnyder@redhat.com>

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* mips-tdep.c (mips_gdbarch_init): Set gdbarch read_sp to
	mips_read_sp.
        * config/mips/tm-mips.h (TARGET_READ_SP): Delete.
This commit is contained in:
Michael Snyder 2002-08-16 02:36:49 +00:00
parent 466d7106f6
commit bcb0cc15ad
3 changed files with 51 additions and 19 deletions
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3
gdb/ChangeLog
View file

@ -7,9 +7,12 @@
* config/mips/tm-mips.h (REGISTER_CONVERT_TO_VIRTUAL,
REGISTER_CONVERT_TO_RAW, REGISTER_CONVERTIBLE,
MAX_REGISTER_RAW_SIZE, MAX_REGISTER_VIRTUAL_SIZE): Delete.
(TARGET_READ_SP): Delete.
* mips-tdep.c (mips_gdbarch_init): Set the above in the gdbarch.
(mips_register_convertible, mips_register_convert_to_virtual,
mips_register_convert_to_raw): Make static.
(mips_read_sp): New function.
(mips_gdbarch_init): Set gdbarch read_sp to mips_read_sp.
2002-08-15 Andrew Cagney <ac131313@redhat.com>

4
gdb/config/mips/tm-mips.h
View file

@ -51,10 +51,6 @@ struct value;
#define DEFAULT_MIPS_TYPE "generic"
/* Remove useless bits from the stack pointer. */
#define TARGET_READ_SP() ADDR_BITS_REMOVE (read_register (SP_REGNUM))
/* Offset from address of function to start of its code.
Zero on most machines. */

63
gdb/mips-tdep.c
View file

@ -513,6 +513,14 @@ mips_register_virtual_type (int reg)
}
}
/* TARGET_READ_SP -- Remove useless bits from the stack pointer. */
static CORE_ADDR
mips_read_sp (void)
{
return ADDR_BITS_REMOVE (read_register (SP_REGNUM));
}
/* Should the upper word of 64-bit addresses be zeroed? */
enum auto_boolean mask_address_var = AUTO_BOOLEAN_AUTO;
@ -2294,9 +2302,11 @@ mips_frame_chain (struct frame_info *frame)
we loop forever if we see a zero size frame. */
if (PROC_FRAME_REG (proc_desc) == SP_REGNUM
&& PROC_FRAME_OFFSET (proc_desc) == 0
/* The previous frame from a sigtramp frame might be frameless
and have frame size zero. */
&& !frame->signal_handler_caller)
/* The previous frame from a sigtramp frame might be frameless
and have frame size zero. */
&& !frame->signal_handler_caller
/* Check if this is a call dummy frame. */
&& frame->pc != mips_call_dummy_address ())
return 0;
else
return get_frame_pointer (frame, proc_desc);
@ -2959,7 +2969,7 @@ mips_o32o64_push_arguments (int nargs,
argreg = A0_REGNUM;
float_argreg = FPA0_REGNUM;
/* the struct_return pointer occupies the first parameter-passing reg */
/* The struct_return pointer occupies the first parameter-passing reg. */
if (struct_return)
{
if (mips_debug)
@ -3346,13 +3356,22 @@ mips_pop_frame (void)
if (frame->saved_regs == NULL)
FRAME_INIT_SAVED_REGS (frame);
for (regnum = 0; regnum < NUM_REGS; regnum++)
{
if (regnum != SP_REGNUM && regnum != PC_REGNUM
&& frame->saved_regs[regnum])
write_register (regnum,
read_memory_integer (frame->saved_regs[regnum],
MIPS_SAVED_REGSIZE));
}
if (regnum != SP_REGNUM && regnum != PC_REGNUM
&& frame->saved_regs[regnum])
{
/* Floating point registers must not be sign extended,
in case MIPS_SAVED_REGSIZE = 4 but sizeof (FP0_REGNUM) == 8. */
if (FP0_REGNUM <= regnum && regnum < FP0_REGNUM + 32)
write_register (regnum,
read_memory_unsigned_integer (frame->saved_regs[regnum],
MIPS_SAVED_REGSIZE));
else
write_register (regnum,
read_memory_integer (frame->saved_regs[regnum],
MIPS_SAVED_REGSIZE));
}
write_register (SP_REGNUM, new_sp);
flush_cached_frames ();
@ -4079,15 +4098,28 @@ return_value_location (struct type *valtype,
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
&& len < MIPS_SAVED_REGSIZE)
{
/* "un-left-justify" the value in the low register */
lo->reg_offset = MIPS_SAVED_REGSIZE - len;
lo->len = len;
if ((gdbarch_tdep (current_gdbarch) -> mips_abi == MIPS_ABI_N32
|| gdbarch_tdep (current_gdbarch) -> mips_abi == MIPS_ABI_N64)
&& (TYPE_CODE (valtype) == TYPE_CODE_STRUCT
|| TYPE_CODE (valtype) == TYPE_CODE_UNION))
{
/* Values are already aligned in the low register. */
lo->reg_offset = 0;
}
else
{
/* "un-left-justify" the value in the low register */
lo->reg_offset = MIPS_SAVED_REGSIZE - len;
}
hi->reg_offset = 0;
lo->len = len;
hi->len = 0;
}
else if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
&& len > MIPS_SAVED_REGSIZE /* odd-size structs */
&& len < MIPS_SAVED_REGSIZE * 2
&& gdbarch_tdep (current_gdbarch) -> mips_abi != MIPS_ABI_N32
&& gdbarch_tdep (current_gdbarch) -> mips_abi != MIPS_ABI_N64
&& (TYPE_CODE (valtype) == TYPE_CODE_STRUCT ||
TYPE_CODE (valtype) == TYPE_CODE_UNION))
{
@ -4925,6 +4957,7 @@ mips_gdbarch_init (struct gdbarch_info info,
}
}
#undef MIPS_DEFAULT_ABI
#ifdef MIPS_DEFAULT_ABI
if (mips_abi == MIPS_ABI_UNKNOWN)
mips_abi = MIPS_DEFAULT_ABI;
@ -5170,7 +5203,7 @@ mips_gdbarch_init (struct gdbarch_info info,
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_read_sp (gdbarch, generic_target_read_sp);
set_gdbarch_read_sp (gdbarch, mips_read_sp);
set_gdbarch_write_sp (gdbarch, generic_target_write_sp);
/* Add/remove bits from an address. The MIPS needs be careful to