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Commit a7e3eef0 authored by rsandifo's avatar rsandifo
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* config/mips/mips.c (mips_frame_info): Add cprestore_size field. 

	(compute_frame_size): Initialize it.  Remove the .cprestore slot
	from args_size.
	(mips_output_function_prologue): Simplify accordingly.
	(mips_debugger_offset): Change the mips16 frame pointer offset from
	current_function_outgoing_args to cfun->machine->frame.args_size.
	(mips_initial_elimination_offset): Likewise.
	(mips_expand_prologue): Likewise.
	(mips_expand_epilogue): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@72222 138bc75d-0d04-0410-961f-82ee72b054a4
parent b4e53865
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Showing with 33 additions and 16 deletions
gcc/ChangeLog
View file @ a7e3eef0
2003-10-08 Richard Sandiford <rsandifo@redhat.com>
* config/mips/mips.c (mips_frame_info): Add cprestore_size field.
(compute_frame_size): Initialize it. Remove the .cprestore slot
from args_size.
(mips_output_function_prologue): Simplify accordingly.
(mips_debugger_offset): Change the mips16 frame pointer offset from
current_function_outgoing_args to cfun->machine->frame.args_size.
(mips_initial_elimination_offset): Likewise.
(mips_expand_prologue): Likewise.
(mips_expand_epilogue): Likewise.
2003-10-08 Richard Sandiford <rsandifo@redhat.com>
* config/mips/mips.h (EXTRA_CONSTRAINT): Add 'W' constraint.
......
gcc/config/mips/mips.c
View file @ a7e3eef0
......@@ -297,6 +297,7 @@ struct mips_frame_info GTY(())
long total_size; /* # bytes that the entire frame takes up */
long var_size; /* # bytes that variables take up */
long args_size; /* # bytes that outgoing arguments take up */
long cprestore_size; /* # bytes that the .cprestore slot takes up */
int gp_reg_size; /* # bytes needed to store gp regs */
int fp_reg_size; /* # bytes needed to store fp regs */
long mask; /* mask of saved gp registers */
......@@ -5107,7 +5108,7 @@ mips_debugger_offset (rtx addr, HOST_WIDE_INT offset)
/* MIPS16 frame is smaller */
if (frame_pointer_needed && TARGET_MIPS16)
frame_size -= current_function_outgoing_args_size;
frame_size -= cfun->machine->frame.args_size;
offset = offset - frame_size;
}
......@@ -6102,6 +6103,7 @@ compute_frame_size (HOST_WIDE_INT size)
HOST_WIDE_INT total_size; /* # bytes that the entire frame takes up */
HOST_WIDE_INT var_size; /* # bytes that variables take up */
HOST_WIDE_INT args_size; /* # bytes that outgoing arguments take up */
HOST_WIDE_INT cprestore_size; /* # bytes that the cprestore slot takes up */
HOST_WIDE_INT gp_reg_rounded; /* # bytes needed to store gp after rounding */
HOST_WIDE_INT gp_reg_size; /* # bytes needed to store gp regs */
HOST_WIDE_INT fp_reg_size; /* # bytes needed to store fp regs */
......@@ -6115,13 +6117,14 @@ compute_frame_size (HOST_WIDE_INT size)
mask = 0;
fmask = 0;
var_size = MIPS_STACK_ALIGN (size);
args_size = MIPS_STACK_ALIGN (STARTING_FRAME_OFFSET);
args_size = current_function_outgoing_args_size;
cprestore_size = MIPS_STACK_ALIGN (STARTING_FRAME_OFFSET) - args_size;
/* The space set aside by STARTING_FRAME_OFFSET isn't needed in leaf
functions. If the function has local variables, we're committed
to allocating it anyway. Otherwise reclaim it here. */
if (var_size == 0 && current_function_is_leaf)
args_size = 0;
cprestore_size = args_size = 0;
/* The MIPS 3.0 linker does not like functions that dynamically
allocate the stack and have 0 for STACK_DYNAMIC_OFFSET, since it
......@@ -6131,7 +6134,7 @@ compute_frame_size (HOST_WIDE_INT size)
if (args_size == 0 && current_function_calls_alloca)
args_size = 4 * UNITS_PER_WORD;
total_size = var_size + args_size;
total_size = var_size + args_size + cprestore_size;
/* Calculate space needed for gp registers. */
for (regno = GP_REG_FIRST; regno <= GP_REG_LAST; regno++)
......@@ -6180,6 +6183,7 @@ compute_frame_size (HOST_WIDE_INT size)
cfun->machine->frame.total_size = total_size;
cfun->machine->frame.var_size = var_size;
cfun->machine->frame.args_size = args_size;
cfun->machine->frame.cprestore_size = cprestore_size;
cfun->machine->frame.gp_reg_size = gp_reg_size;
cfun->machine->frame.fp_reg_size = fp_reg_size;
cfun->machine->frame.mask = mask;
......@@ -6192,7 +6196,8 @@ compute_frame_size (HOST_WIDE_INT size)
{
unsigned long offset;
offset = args_size + var_size + gp_reg_size - GET_MODE_SIZE (gpr_mode);
offset = (args_size + cprestore_size + var_size
+ gp_reg_size - GET_MODE_SIZE (gpr_mode));
cfun->machine->frame.gp_sp_offset = offset;
cfun->machine->frame.gp_save_offset = offset - total_size;
}
......@@ -6204,7 +6209,7 @@ compute_frame_size (HOST_WIDE_INT size)
if (fmask)
{
unsigned long offset = (args_size + var_size
unsigned long offset = (args_size + cprestore_size + var_size
+ gp_reg_rounded + fp_reg_size
- FP_INC * UNITS_PER_FPREG);
cfun->machine->frame.fp_sp_offset = offset;
......@@ -6229,6 +6234,8 @@ mips_initial_elimination_offset (int from, int to)
{
int offset;
compute_frame_size (get_frame_size ());
/* Set OFFSET to the offset from the stack pointer. */
switch (from)
{
......@@ -6237,7 +6244,6 @@ mips_initial_elimination_offset (int from, int to)
break;
case ARG_POINTER_REGNUM:
compute_frame_size (get_frame_size ());
offset = cfun->machine->frame.total_size;
if (mips_abi == ABI_N32 || mips_abi == ABI_64)
offset -= current_function_pretend_args_size;
......@@ -6248,7 +6254,7 @@ mips_initial_elimination_offset (int from, int to)
}
if (TARGET_MIPS16 && to == HARD_FRAME_POINTER_REGNUM)
offset -= current_function_outgoing_args_size;
offset -= cfun->machine->frame.args_size;
return offset;
}
......@@ -6372,19 +6378,18 @@ mips_output_function_prologue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
{
/* .frame FRAMEREG, FRAMESIZE, RETREG */
fprintf (file,
"\t.frame\t%s,%ld,%s\t\t# vars= %ld, regs= %d/%d, args= %d, gp= %ld\n",
"\t.frame\t%s,%ld,%s\t\t# vars= %ld, regs= %d/%d, args= %ld, gp= %ld\n",
(reg_names[(frame_pointer_needed)
? HARD_FRAME_POINTER_REGNUM : STACK_POINTER_REGNUM]),
((frame_pointer_needed && TARGET_MIPS16)
? ((long) tsize - current_function_outgoing_args_size)
? ((long) tsize - cfun->machine->frame.args_size)
: (long) tsize),
reg_names[GP_REG_FIRST + 31],
cfun->machine->frame.var_size,
cfun->machine->frame.num_gp,
cfun->machine->frame.num_fp,
current_function_outgoing_args_size,
cfun->machine->frame.args_size
- current_function_outgoing_args_size);
cfun->machine->frame.args_size,
cfun->machine->frame.cprestore_size);
/* .mask MASK, GPOFFSET; .fmask FPOFFSET */
fprintf (file, "\t.mask\t0x%08lx,%ld\n\t.fmask\t0x%08lx,%ld\n",
......@@ -6562,9 +6567,9 @@ mips_expand_prologue (void)
acceesed with unextended instructions. */
if (frame_pointer_needed)
{
if (TARGET_MIPS16 && current_function_outgoing_args_size != 0)
if (TARGET_MIPS16 && cfun->machine->frame.args_size != 0)
{
rtx offset = GEN_INT (current_function_outgoing_args_size);
rtx offset = GEN_INT (cfun->machine->frame.args_size);
RTX_FRAME_RELATED_P
(emit_insn (gen_add3_insn (hard_frame_pointer_rtx,
stack_pointer_rtx,
......@@ -6718,7 +6723,7 @@ mips_expand_epilogue (int sibcall_p)
{
base = hard_frame_pointer_rtx;
if (TARGET_MIPS16)
step1 -= current_function_outgoing_args_size;
step1 -= cfun->machine->frame.args_size;
}
/* If we need to restore registers, deallocate as much stack as
......
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