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re PR target/51871 (FAIL: gcc.c-torture/execute/20010122-1.c execution) 

PR target/51871
	* config/pa/pa.c (pa_return_addr_rtx): Add support for PA2.0 export
	stubs.

From-SVN: r183669
This commit is contained in:
John David Anglin 2012-01-28 18:48:11 +00:00 committed by John David Anglin
parent 3bfe6da98d
commit df8b553576
2 changed files with 32 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-01-28 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR target/51871
* config/pa/pa.c (pa_return_addr_rtx): Add support for PA2.0 export
stubs.
2012-01-28 Sandra Loosemore <sandra@codesourcery.com> 2012-01-28 Sandra Loosemore <sandra@codesourcery.com>
* doc/invoke.texi: Correct hyphenation of "floating point", * doc/invoke.texi: Correct hyphenation of "floating point",

31
gcc/config/pa/pa.c
View File

@ -4501,7 +4501,7 @@ pa_return_addr_rtx (int count, rtx frameaddr)
rtx saved_rp; rtx saved_rp;
rtx ins; rtx ins;
/* Instruction stream at the normal return address for the export stub: /* The instruction stream at the return address of a PA1.X export stub is:
0x4bc23fd1 | stub+8: ldw -18(sr0,sp),rp 0x4bc23fd1 | stub+8: ldw -18(sr0,sp),rp
0x004010a1 | stub+12: ldsid (sr0,rp),r1 0x004010a1 | stub+12: ldsid (sr0,rp),r1
@ -4509,10 +4509,16 @@ pa_return_addr_rtx (int count, rtx frameaddr)
0xe0400002 | stub+20: be,n 0(sr0,rp) 0xe0400002 | stub+20: be,n 0(sr0,rp)
0xe0400002 must be specified as -532676606 so that it won't be 0xe0400002 must be specified as -532676606 so that it won't be
rejected as an invalid immediate operand on 64-bit hosts. */ rejected as an invalid immediate operand on 64-bit hosts.
HOST_WIDE_INT insns[4] = {0x4bc23fd1, 0x004010a1, 0x00011820, -532676606}; The instruction stream at the return address of a PA2.0 export stub is:
int i;
0x4bc23fd1 | stub+8: ldw -18(sr0,sp),rp
0xe840d002 | stub+12: bve,n (rp)
*/
HOST_WIDE_INT insns[4];
int i, len;
if (count != 0) if (count != 0)
return NULL_RTX; return NULL_RTX;
@ -4535,11 +4541,26 @@ pa_return_addr_rtx (int count, rtx frameaddr)
ins = copy_to_reg (gen_rtx_AND (Pmode, rp, MASK_RETURN_ADDR)); ins = copy_to_reg (gen_rtx_AND (Pmode, rp, MASK_RETURN_ADDR));
label = gen_label_rtx (); label = gen_label_rtx ();
if (TARGET_PA_20)
{
insns[0] = 0x4bc23fd1;
insns[1] = -398405630;
len = 2;
}
else
{
insns[0] = 0x4bc23fd1;
insns[1] = 0x004010a1;
insns[2] = 0x00011820;
insns[3] = -532676606;
len = 4;
}
/* Check the instruction stream at the normal return address for the /* Check the instruction stream at the normal return address for the
export stub. If it is an export stub, than our return address is export stub. If it is an export stub, than our return address is
really in -24[frameaddr]. */ really in -24[frameaddr]. */
for (i = 0; i < 3; i++) for (i = 0; i < len; i++)
{ {
rtx op0 = gen_rtx_MEM (SImode, plus_constant (ins, i * 4)); rtx op0 = gen_rtx_MEM (SImode, plus_constant (ins, i * 4));
rtx op1 = GEN_INT (insns[i]); rtx op1 = GEN_INT (insns[i]);