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re PR target/5828 (gcc-3.0.4 on arm : floating point registers incorrectly reloaded)

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PR target/5828
* arm.c (arm_output_epilogue): Fix floating-point register save
adjustment when using a frame pointer.

Co-Authored-By: Jeroen Dobbelaere <jeroen.dobbelaere@acunia.com>

From-SVN: r50771
This commit is contained in:
Richard Earnshaw 2002-03-14 15:09:13 +00:00 • committed by Richard Earnshaw
parent d3f129b340
commit c882c7acd5
2 changed files with 19 additions and 6 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2002-03-14 Richard Earnshaw <rearnsha@arm.com>
Jeroen Dobbelaere <jeroen.dobbelaere@acunia.com>
PR target/5828
* arm.c (arm_output_epilogue): Fix floating-point register save
adjustment when using a frame pointer.
2002-03-14 Richard Sandiford <rsandifo@redhat.com>
* config/mips/mips.h (FP_INC, UNITS_PER_FPVALUE): New macros.

18
gcc/config/arm/arm.c
View file

@ -7467,8 +7467,9 @@ arm_output_epilogue (really_return)
int reg;
unsigned long saved_regs_mask;
unsigned long func_type;
/* If we need this, then it will always be at least this much. */
int floats_offset = 12;
/* Floats_offset is the offset from the "virtual" frame. In an APCS
frame that is $fp + 4 for a non-variadic function. */
int floats_offset = 0;
rtx operands[3];
int frame_size = get_frame_size ();
FILE * f = asm_out_file;
@ -7505,6 +7506,9 @@ arm_output_epilogue (really_return)
saved_regs_mask = arm_compute_save_reg_mask ();
/* XXX We should adjust floats_offset for any anonymous args, and then
re-adjust vfp_offset below to compensate. */
/* Compute how far away the floats will be. */
for (reg = 0; reg <= LAST_ARM_REGNUM; reg ++)
if (saved_regs_mask & (1 << reg))
@ -7512,6 +7516,8 @@ arm_output_epilogue (really_return)
if (frame_pointer_needed)
{
int vfp_offset = 4;
if (arm_fpu_arch == FP_SOFT2)
{
for (reg = LAST_ARM_FP_REGNUM; reg >= FIRST_ARM_FP_REGNUM; reg--)
@ -7519,7 +7525,7 @@ arm_output_epilogue (really_return)
{
floats_offset += 12;
asm_fprintf (f, "\tldfe\t%r, [%r, #-%d]\n",
reg, FP_REGNUM, floats_offset);
reg, FP_REGNUM, floats_offset - vfp_offset);
}
}
else
@ -7536,7 +7542,7 @@ arm_output_epilogue (really_return)
if (start_reg - reg == 3)
{
asm_fprintf (f, "\tlfm\t%r, 4, [%r, #-%d]\n",
reg, FP_REGNUM, floats_offset);
reg, FP_REGNUM, floats_offset - vfp_offset);
start_reg = reg - 1;
}
}
@ -7545,7 +7551,7 @@ arm_output_epilogue (really_return)
if (reg != start_reg)
asm_fprintf (f, "\tlfm\t%r, %d, [%r, #-%d]\n",
reg + 1, start_reg - reg,
FP_REGNUM, floats_offset);
FP_REGNUM, floats_offset - vfp_offset);
start_reg = reg - 1;
}
}
@ -7554,7 +7560,7 @@ arm_output_epilogue (really_return)
if (reg != start_reg)
asm_fprintf (f, "\tlfm\t%r, %d, [%r, #-%d]\n",
reg + 1, start_reg - reg,
FP_REGNUM, floats_offset);
FP_REGNUM, floats_offset - vfp_offset);
}
/* saved_regs_mask should contain the IP, which at the time of stack