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* tilegx-tdep.c (tilegx_push_dummy_call): args pushed on stack

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should be aligned to 64bit.
This commit is contained in:
Walter Lee
2013-02-19 16:09:13 +00:00
parent 42f45f1a89
commit bc23a95694
2 changed files with 10 additions and 17 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2013-02-19 Jiong Wang <jiwang@tilera.com>
* tilegx-tdep.c (tilegx_push_dummy_call): args pushed on stack
should be aligned to 64bit.
2013-02-19 Kai Tietz <ktietz@redhat.com> 2013-02-19 Kai Tietz <ktietz@redhat.com>
* windows-nat.c (windows_xfer_memory): Fix debug-output * windows-nat.c (windows_xfer_memory): Fix debug-output

22
gdb/tilegx-tdep.c
View File

@ -292,7 +292,7 @@ tilegx_push_dummy_call (struct gdbarch *gdbarch,
int argreg = TILEGX_R0_REGNUM; int argreg = TILEGX_R0_REGNUM;
int i, j; int i, j;
int typelen, slacklen, alignlen; int typelen, slacklen, alignlen;
static const gdb_byte two_zero_words[8] = { 0 }; static const gdb_byte four_zero_words[16] = { 0 };
/* If struct_return is 1, then the struct return address will /* If struct_return is 1, then the struct return address will
consume one argument-passing register. */ consume one argument-passing register. */
@ -326,18 +326,6 @@ tilegx_push_dummy_call (struct gdbarch *gdbarch,
/* Align SP. */ /* Align SP. */
stack_dest = tilegx_frame_align (gdbarch, stack_dest); stack_dest = tilegx_frame_align (gdbarch, stack_dest);
/* Loop backwards through arguments to determine stack alignment. */
alignlen = 0;
for (j = nargs - 1; j >= i; j--)
{
typelen = TYPE_LENGTH (value_enclosing_type (args[j]));
alignlen += (typelen + 3) & (~3);
}
if (alignlen & 0x4)
stack_dest -= 4;
/* Loop backwards through remaining arguments and push them on /* Loop backwards through remaining arguments and push them on
the stack, word aligned. */ the stack, word aligned. */
for (j = nargs - 1; j >= i; j--) for (j = nargs - 1; j >= i; j--)
@ -347,7 +335,7 @@ tilegx_push_dummy_call (struct gdbarch *gdbarch,
const gdb_byte *contents = value_contents (args[j]); const gdb_byte *contents = value_contents (args[j]);
typelen = TYPE_LENGTH (value_enclosing_type (args[j])); typelen = TYPE_LENGTH (value_enclosing_type (args[j]));
slacklen = ((typelen + 3) & (~3)) - typelen; slacklen = align_up (typelen, 8) - typelen;
val = xmalloc (typelen + slacklen); val = xmalloc (typelen + slacklen);
back_to = make_cleanup (xfree, val); back_to = make_cleanup (xfree, val);
memcpy (val, contents, typelen); memcpy (val, contents, typelen);
@ -359,9 +347,9 @@ tilegx_push_dummy_call (struct gdbarch *gdbarch,
do_cleanups (back_to); do_cleanups (back_to);
} }
/* Add 2 words for linkage space to the stack. */ /* Add 16 bytes for linkage space to the stack. */
stack_dest = stack_dest - 8; stack_dest = stack_dest - 16;
write_memory (stack_dest, two_zero_words, 8); write_memory (stack_dest, four_zero_words, 16);
/* Update stack pointer. */ /* Update stack pointer. */
regcache_cooked_write_unsigned (regcache, TILEGX_SP_REGNUM, stack_dest); regcache_cooked_write_unsigned (regcache, TILEGX_SP_REGNUM, stack_dest);