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Upstream commit 1d880d4a9bf7608c2cd33bbe954ce6995f79121a
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From: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
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Date: Wed, 12 Dec 2018 12:41:52 +0000 (-0200)
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Subject: powerpc: Add missing CFI register information (bug #23614)
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X-Git-Tag: glibc-2.29~210
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X-Git-Url: https://sourceware.org/git/?p=glibc.git;a=commitdiff_plain;h=1d880d4a9bf7608c2cd33bbe954ce6995f79121a
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powerpc: Add missing CFI register information (bug #23614)
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Add CFI information about the offset of registers stored in the stack
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frame.
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[BZ #23614]
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* sysdeps/powerpc/powerpc64/addmul_1.S (FUNC): Add CFI offset for
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registers saved in the stack frame.
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* sysdeps/powerpc/powerpc64/lshift.S (__mpn_lshift): Likewise.
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* sysdeps/powerpc/powerpc64/mul_1.S (__mpn_mul_1): Likewise.
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Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
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Reviewed-by: Gabriel F. T. Gomes <gabriel@inconstante.eti.br>
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---
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diff --git a/sysdeps/powerpc/powerpc64/addmul_1.S b/sysdeps/powerpc/powerpc64/addmul_1.S
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index 48e3b1b..e450d6a 100644
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--- a/sysdeps/powerpc/powerpc64/addmul_1.S
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+++ b/sysdeps/powerpc/powerpc64/addmul_1.S
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@@ -34,16 +34,27 @@
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#define N r5
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#define VL r6
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+#define R27SAVE (-40)
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+#define R28SAVE (-32)
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+#define R29SAVE (-24)
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+#define R30SAVE (-16)
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+#define R31SAVE (-8)
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+
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ENTRY_TOCLESS (FUNC, 5)
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- std r31, -8(r1)
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+ std r31, R31SAVE(r1)
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rldicl. r0, N, 0, 62
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- std r30, -16(r1)
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+ std r30, R30SAVE(r1)
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cmpdi VL, r0, 2
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- std r29, -24(r1)
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+ std r29, R29SAVE(r1)
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addi N, N, 3
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- std r28, -32(r1)
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+ std r28, R28SAVE(r1)
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srdi N, N, 2
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- std r27, -40(r1)
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+ std r27, R27SAVE(r1)
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+ cfi_offset(r31, R31SAVE)
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+ cfi_offset(r30, R30SAVE)
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+ cfi_offset(r29, R29SAVE)
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+ cfi_offset(r28, R28SAVE)
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+ cfi_offset(r27, R27SAVE)
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mtctr N
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beq cr0, L(b00)
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blt cr6, L(b01)
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@@ -199,10 +210,10 @@ L(end): mulld r0, r9, VL
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addic r11, r11, 1
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#endif
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addze RP, r8
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- ld r31, -8(r1)
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- ld r30, -16(r1)
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- ld r29, -24(r1)
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- ld r28, -32(r1)
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- ld r27, -40(r1)
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+ ld r31, R31SAVE(r1)
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+ ld r30, R30SAVE(r1)
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+ ld r29, R29SAVE(r1)
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+ ld r28, R28SAVE(r1)
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+ ld r27, R27SAVE(r1)
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blr
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END(FUNC)
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diff --git a/sysdeps/powerpc/powerpc64/lshift.S b/sysdeps/powerpc/powerpc64/lshift.S
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index 8b6396e..855d6f2 100644
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--- a/sysdeps/powerpc/powerpc64/lshift.S
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+++ b/sysdeps/powerpc/powerpc64/lshift.S
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@@ -26,11 +26,15 @@
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#define TNC r0
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#define U0 r30
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#define U1 r31
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+#define U0SAVE (-16)
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+#define U1SAVE (-8)
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#define RETVAL r5
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ENTRY_TOCLESS (__mpn_lshift, 5)
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- std U1, -8(r1)
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- std U0, -16(r1)
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+ std U1, U1SAVE(r1)
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+ std U0, U0SAVE(r1)
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+ cfi_offset(U1, U1SAVE)
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+ cfi_offset(U0, U0SAVE)
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subfic TNC, CNT, 64
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sldi r7, N, RP
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add UP, UP, r7
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@@ -170,8 +174,8 @@ L(cj3): or r10, r12, r7
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L(cj2): std r10, -32(RP)
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std r8, -40(RP)
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-L(ret): ld U1, -8(r1)
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- ld U0, -16(r1)
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+L(ret): ld U1, U1SAVE(r1)
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+ ld U0, U0SAVE(r1)
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mr RP, RETVAL
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blr
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END(__mpn_lshift)
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diff --git a/sysdeps/powerpc/powerpc64/mul_1.S b/sysdeps/powerpc/powerpc64/mul_1.S
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index 953ded8..cade365 100644
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--- a/sysdeps/powerpc/powerpc64/mul_1.S
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+++ b/sysdeps/powerpc/powerpc64/mul_1.S
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@@ -24,9 +24,14 @@
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#define N r5
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#define VL r6
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+#define R26SAVE (-48)
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+#define R27SAVE (-40)
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+
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ENTRY_TOCLESS (__mpn_mul_1, 5)
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- std r27, -40(r1)
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- std r26, -48(r1)
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+ std r27, R27SAVE(r1)
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+ std r26, R26SAVE(r1)
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+ cfi_offset(r27, R27SAVE)
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+ cfi_offset(r26, R26SAVE)
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li r12, 0
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ld r26, 0(UP)
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@@ -129,7 +134,7 @@ L(end): mulld r0, r26, VL
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std r0, 0(RP)
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std r7, 8(RP)
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L(ret): addze RP, r8
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- ld r27, -40(r1)
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- ld r26, -48(r1)
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+ ld r27, R27SAVE(r1)
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+ ld r26, R26SAVE(r1)
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blr
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END(__mpn_mul_1)
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