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powerpc: Add missing CFI register information (bug ) 

Add CFI information about the offset of registers stored in the stack
frame.

	[BZ ]
	* sysdeps/powerpc/powerpc64/addmul_1.S (FUNC): Add CFI offset for
	registers saved in the stack frame.
	* sysdeps/powerpc/powerpc64/lshift.S (__mpn_lshift): Likewise.
	* sysdeps/powerpc/powerpc64/mul_1.S (__mpn_mul_1): Likewise.

Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Reviewed-by: Gabriel F. T. Gomes <gabriel@inconstante.eti.br>
(cherry picked from commit 1d880d4a9b)
This commit is contained in:
Tulio Magno Quites Machado Filho 2018-12-13 09:42:22 +01:00 committed by Florian Weimer
parent ea16a6938d
commit 852620258d
5 changed files with 47 additions and 18 deletions

8
ChangeLog
View File

@ -1,3 +1,11 @@
2018-12-12 Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
[BZ #23614]
* sysdeps/powerpc/powerpc64/addmul_1.S (FUNC): Add CFI offset for
registers saved in the stack frame.
* sysdeps/powerpc/powerpc64/lshift.S (__mpn_lshift): Likewise.
* sysdeps/powerpc/powerpc64/mul_1.S (__mpn_mul_1): Likewise.
2018-12-07 DJ Delorie <dj@redhat.com>
[BZ #23907]

1
NEWS
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@ -20,6 +20,7 @@ The following bugs are resolved with this release:
[23578] regex: Fix memory overread in re_compile_pattern
[23579] libc: Errors misreported in preadv2
[23606] Missing ENDBR32 in sysdeps/i386/start.S
[23614] powerpc: missing CFI register information in __mpn_* functions
[23679] gethostid: Missing NULL check for gethostbyname_r result
[23709] Fix CPU string flags for Haswell-type CPUs
[23717] Fix stack overflow in stdlib/tst-setcontext9

31
sysdeps/powerpc/powerpc64/addmul_1.S
View File

@ -34,16 +34,27 @@
#define N r5
#define VL r6
#define R27SAVE (-40)
#define R28SAVE (-32)
#define R29SAVE (-24)
#define R30SAVE (-16)
#define R31SAVE (-8)
ENTRY_TOCLESS (FUNC, 5)
std r31, -8(r1)
std r31, R31SAVE(r1)
rldicl. r0, N, 0, 62
std r30, -16(r1)
std r30, R30SAVE(r1)
cmpdi VL, r0, 2
std r29, -24(r1)
std r29, R29SAVE(r1)
addi N, N, 3
std r28, -32(r1)
std r28, R28SAVE(r1)
srdi N, N, 2
std r27, -40(r1)
std r27, R27SAVE(r1)
cfi_offset(r31, R31SAVE)
cfi_offset(r30, R30SAVE)
cfi_offset(r29, R29SAVE)
cfi_offset(r28, R28SAVE)
cfi_offset(r27, R27SAVE)
mtctr N
beq cr0, L(b00)
blt cr6, L(b01)
@ -199,10 +210,10 @@ L(end): mulld r0, r9, VL
addic r11, r11, 1
#endif
addze RP, r8
ld r31, -8(r1)
ld r30, -16(r1)
ld r29, -24(r1)
ld r28, -32(r1)
ld r27, -40(r1)
ld r31, R31SAVE(r1)
ld r30, R30SAVE(r1)
ld r29, R29SAVE(r1)
ld r28, R28SAVE(r1)
ld r27, R27SAVE(r1)
blr
END(FUNC)

12
sysdeps/powerpc/powerpc64/lshift.S
View File

@ -26,11 +26,15 @@
#define TNC r0
#define U0 r30
#define U1 r31
#define U0SAVE (-16)
#define U1SAVE (-8)
#define RETVAL r5
ENTRY_TOCLESS (__mpn_lshift, 5)
std U1, -8(r1)
std U0, -16(r1)
std U1, U1SAVE(r1)
std U0, U0SAVE(r1)
cfi_offset(U1, U1SAVE)
cfi_offset(U0, U0SAVE)
subfic TNC, CNT, 64
sldi r7, N, RP
add UP, UP, r7
@ -170,8 +174,8 @@ L(cj3): or r10, r12, r7
L(cj2): std r10, -32(RP)
std r8, -40(RP)
L(ret): ld U1, -8(r1)
ld U0, -16(r1)
L(ret): ld U1, U1SAVE(r1)
ld U0, U0SAVE(r1)
mr RP, RETVAL
blr
END(__mpn_lshift)

13
sysdeps/powerpc/powerpc64/mul_1.S
View File

@ -24,9 +24,14 @@
#define N r5
#define VL r6
#define R26SAVE (-48)
#define R27SAVE (-40)
ENTRY_TOCLESS (__mpn_mul_1, 5)
std r27, -40(r1)
std r26, -48(r1)
std r27, R27SAVE(r1)
std r26, R26SAVE(r1)
cfi_offset(r27, R27SAVE)
cfi_offset(r26, R26SAVE)
li r12, 0
ld r26, 0(UP)
@ -129,7 +134,7 @@ L(end): mulld r0, r26, VL
std r0, 0(RP)
std r7, 8(RP)
L(ret): addze RP, r8
ld r27, -40(r1)
ld r26, -48(r1)
ld r27, R27SAVE(r1)
ld r26, R26SAVE(r1)
blr
END(__mpn_mul_1)