x86-64: Align L(SP_RANGE)/L(SP_INF_0) to 8 bytes [BZ #21955]

sysdeps/x86_64/fpu/e_expf.S has

        lea     L(SP_RANGE)(%rip), %rdx /* load over/underflow bound */
        cmpl    (%rdx,%rax,4), %ecx     /* |x|<under/overflow bound ? */
...
        /* Here if |x| is Inf */
        lea     L(SP_INF_0)(%rip), %rdx /* depending on sign of x: */
        movss   (%rdx,%rax,4), %xmm0    /* return zero or Inf */
        ret
...
         .section .rodata.cst8,"aM",@progbits,8
...
        .p2align 2
L(SP_RANGE): /* single precision overflow/underflow bounds */
        .long   0x42b17217      /* if x>this bound, then result overflows */
        .long   0x42cff1b4      /* if x<this bound, then result underflows */
        .type L(SP_RANGE), @object
        ASM_SIZE_DIRECTIVE(L(SP_RANGE))

        .p2align 2
L(SP_INF_0):
        .long   0x7f800000      /* single precision Inf */
        .long   0               /* single precision zero */
        .type L(SP_INF_0), @object
        ASM_SIZE_DIRECTIVE(L(SP_INF_0))

Since L(SP_RANGE) and L(SP_INF_0) are in .rodata.cst8 section, they must
be aligned to 8 bytes.

	[BZ #21955]
	* sysdeps/x86_64/fpu/e_expf.S (L(SP_RANGE)): Aligned to 8 bytes.
	(L(SP_INF_0)): Likewise.

diff --git a/ChangeLog b/ChangeLog
index a1fb5165c1080f846cf609054712c11663a08834..db3e4b3a92363156084ae2a334957e51861cb7ed 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-08-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+       [BZ #21955]
+       * sysdeps/x86_64/fpu/e_expf.S (L(SP_RANGE)): Aligned to 8 bytes.
+       (L(SP_INF_0)): Likewise.
+
 2017-08-15  Florian Weimer  <fweimer@redhat.com>
 
        * gmon/Makefile (tests-special): Add tst-gmon-prof only if

diff --git a/sysdeps/x86_64/fpu/e_expf.S b/sysdeps/x86_64/fpu/e_expf.S
index 4fd2bb1fb5c41bf189621c46c9de6269b8b11420..c3bf312c447ac6ab5548c095c2bf3ad1709eb76e 100644 (file)
--- a/sysdeps/x86_64/fpu/e_expf.S
+++ b/sysdeps/x86_64/fpu/e_expf.S
@@ -297,14 +297,14 @@ L(DP_P0): /* double precision polynomial coefficient P0 */
        .type L(DP_P0), @object
        ASM_SIZE_DIRECTIVE(L(DP_P0))
 
-       .p2align 2
+       .p2align 3
 L(SP_RANGE): /* single precision overflow/underflow bounds */
        .long   0x42b17217      /* if x>this bound, then result overflows */
        .long   0x42cff1b4      /* if x<this bound, then result underflows */
        .type L(SP_RANGE), @object
        ASM_SIZE_DIRECTIVE(L(SP_RANGE))
 
-       .p2align 2
+       .p2align 3
 L(SP_INF_0):
        .long   0x7f800000      /* single precision Inf */
        .long   0               /* single precision zero */