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Add assember CFI directives to millicode division and remainder routines.

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The millicode division and remainder routines trap division by zero.
The unwinder needs these directives to unwind divide by zero traps.

2023-04-05  John David Anglin  <danglin@gcc.gnu.org>

libgcc/ChangeLog:

	PR target/109374
	* config/pa/milli64.S (RETURN_COLUMN): Define.
	($$divI): Add CFI directives.
	($$divU): Likewise.
	($$remI): Likewise.
	($$remU): Likewise.
This commit is contained in:
John David Anglin 2023-04-05 14:44:54 +00:00
parent f0f372fab3
commit ddb0f66e6c
1 changed files with 14 additions and 0 deletions
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14
libgcc/config/pa/milli64.S
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@ -105,8 +105,10 @@ sar: .reg %cr11 /* Shift Amount Register */
rp: .reg r2 /* return pointer */
#ifdef pa64
mrp: .reg r2 /* millicode return pointer */
#define RETURN_COLUMN 2
#else
mrp: .reg r31 /* millicode return pointer */
#define RETURN_COLUMN 31
#endif
ret0: .reg r28 /* return value */
ret1: .reg r29 /* return value (high part of double) */
@ -313,6 +315,8 @@ RDEFINE(temp1,arg0)
.import $$divI_15,millicode
.export $$divI,millicode
.export $$divoI,millicode
.cfi_startproc
.cfi_return_column RETURN_COLUMN
.proc
.callinfo millicode
.entry
@ -484,6 +488,7 @@ LSYM(negative1)
addo arg0,arg1,r0 /* trap iff dividend==0x80000000 && divisor==-1 */
.exit
.procend
.cfi_endproc
.end
#endif
@ -543,6 +548,8 @@ RDEFINE(temp1,arg0)
.import $$divU_12,millicode
.import $$divU_14,millicode
.import $$divU_15,millicode
.cfi_startproc
.cfi_return_column RETURN_COLUMN
.proc
.callinfo millicode
.entry
@ -706,6 +713,7 @@ LSYM(big_divisor)
addc r0,r0,retreg
.exit
.procend
.cfi_endproc
.end
#endif
@ -750,6 +758,8 @@ RDEFINE(retreg,ret1)
SUBSPA_MILLI
ATTR_MILLI
.cfi_startproc
.cfi_return_column RETURN_COLUMN
.proc
.callinfo millicode
.entry
@ -875,6 +885,7 @@ LSYM(finish)
nop
.exit
.procend
.cfi_endproc
#ifdef milliext
.origin 0x00000200
#endif
@ -922,6 +933,8 @@ RDEFINE(rmndr,ret1) /* r29 */
SUBSPA_MILLI
ATTR_MILLI
.export $$remU,millicode
.cfi_startproc
.cfi_return_column RETURN_COLUMN
.proc
.callinfo millicode
.entry
@ -1013,6 +1026,7 @@ LSYM(special_case)
nop
.exit
.procend
.cfi_endproc
.end
#endif