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Put saved registers in *actually* the write place. I hope.

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This commit is contained in:
David Given 2016-11-15 21:54:15 +01:00
parent cc686ded62
commit 86c832ef86
1 changed files with 7 additions and 10 deletions
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17
mach/powerpc/mcg/platform.c
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@ -34,8 +34,8 @@ void platform_calculate_offsets(void)
if (!(hreg->attrs & burm_volatile_ATTR) &&
((hreg->attrs & burm_long_ATTR) || (hreg->attrs & burm_double_ATTR)))
{
hreg->offset = current_proc->saved_size;
current_proc->saved_size += 8;
hreg->offset = current_proc->saved_size;
array_append(&saved_regs, hreg);
}
}
@ -46,8 +46,8 @@ void platform_calculate_offsets(void)
if (!(hreg->attrs & burm_volatile_ATTR) &&
((hreg->attrs & burm_int_ATTR) || (hreg->attrs & burm_float_ATTR)))
{
hreg->offset = current_proc->saved_size;
current_proc->saved_size += 4;
hreg->offset = current_proc->saved_size;
array_append(&saved_regs, hreg);
}
}
@ -61,7 +61,6 @@ void platform_calculate_offsets(void)
struct hop* platform_prologue(void)
{
int i;
int saved_offset;
int spoffset = current_proc->saved_size + current_proc->spills_size +
current_proc->locals_size;
struct hop* hop = new_hop(current_proc->entry, NULL);
@ -73,7 +72,7 @@ struct hop* platform_prologue(void)
current_proc->locals_size);
hop_add_insel(hop, "! spills @ fp-%d to fp-%d",
-current_proc->fp_to_sb, current_proc->locals_size);
for (i=0; i<saved_regs.count; i++)
for (i=saved_regs.count-1; i>=0; i--)
{
struct hreg* hreg = saved_regs.item[i];
hop_add_insel(hop, "! %s @ fp-%d",
@ -87,16 +86,15 @@ struct hop* platform_prologue(void)
hop_add_insel(hop, "addi fp, sp, %d", spoffset);
/* Saved reg offsets are negative. */
saved_offset = -(current_proc->locals_size + current_proc->spills_size);
for (i=0; i<saved_regs.count; i++)
{
struct hreg* hreg = saved_regs.item[i];
if (hreg->attrs & burm_int_ATTR)
hop_add_insel(hop, "stw %H, %d(fp)",
hreg, current_proc->fp_to_rb + saved_offset);
hreg, current_proc->fp_to_rb + hreg->offset);
else if (hreg->attrs & burm_float_ATTR)
hop_add_insel(hop, "stfs %H, %d(fp)",
hreg, current_proc->fp_to_rb + saved_offset);
hreg, current_proc->fp_to_rb + hreg->offset);
}
return hop;
}
@ -105,17 +103,16 @@ struct hop* platform_epilogue(void)
{
struct hop* hop = new_hop(current_proc->exit, NULL);
int i;
int saved_offset;
for (i=0; i<saved_regs.count; i++)
{
struct hreg* hreg = saved_regs.item[i];
if (hreg->attrs & burm_int_ATTR)
hop_add_insel(hop, "lwz %H, %d(fp)",
hreg, current_proc->fp_to_rb + saved_offset);
hreg, current_proc->fp_to_rb + hreg->offset);
else if (hreg->attrs & burm_float_ATTR)
hop_add_insel(hop, "lfs %H, %d(fp)",
hreg, current_proc->fp_to_rb + saved_offset);
hreg, current_proc->fp_to_rb + hreg->offset);
}
hop_add_insel(hop, "lwz r0, 4(fp)");