Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / powerpc / powerpc32 / fpu / setjmp-common.S

diff --git a/sysdeps/powerpc/powerpc32/fpu/setjmp-common.S b/sysdeps/powerpc/powerpc32/fpu/setjmp-common.S
index 1f08b8b4aaa1eca55e27e4c0b2ba1321fb46a0f7..59f4e8b3da3721c94d9439e77fe3875dbfaf40b2 100644 (file)
--- a/sysdeps/powerpc/powerpc32/fpu/setjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/fpu/setjmp-common.S
@@ -1,5 +1,5 @@
 /* setjmp for PowerPC.
-   Copyright (C) 1995-2012 Free Software Foundation, Inc.
+   Copyright (C) 1995-2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -17,18 +17,16 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <sysdep.h>
+#include <stap-probe.h>
 #define _ASM
 #ifdef __NO_VMX__
 # include <novmxsetjmp.h>
 #else
 # include <jmpbuf-offsets.h>
 #endif
-#include <bp-sym.h>
-#include <bp-asm.h>
 
        .machine        "altivec"
-ENTRY (BP_SYM (__sigsetjmp))
-       CHECK_BOUNDS_BOTH_WIDE_LIT (r3, r8, r9, JB_SIZE)
+ENTRY (__sigsetjmp_symbol)
 
 #ifdef PTR_MANGLE
        mr   r5,r1
@@ -38,6 +36,9 @@ ENTRY (BP_SYM (__sigsetjmp))
        stw  r1,(JB_GPR1*4)(3)
 #endif
        mflr r0
+       /* setjmp probe expects longjmp first argument (4@3), second argument
+          (-4@4), and target address (4@0), respectively.  */
+       LIBC_PROBE (setjmp, 3, 4@3, -4@4, 4@0)
        stw  r14,((JB_GPRS+0)*4)(3)
        stfd fp14,((JB_FPRS+0*2)*4)(3)
 #ifdef PTR_MANGLE
@@ -90,21 +91,21 @@ ENTRY (BP_SYM (__sigsetjmp))
        mtlr    r6
        cfi_same_value (lr)
 #  ifdef SHARED
-#   ifdef IS_IN_rtld
+#   if IS_IN (rtld)
        /* Inside ld.so we use the local alias to avoid runtime GOT
           relocations.  */
        lwz     r5,_rtld_local_ro@got(r5)
 #   else
        lwz     r5,_rtld_global_ro@got(r5)
 #   endif
-       lwz     r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+4(r5)
+       lwz     r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+LOWORD(r5)
 #  else
        lwz     r5,_dl_hwcap@got(r5)
-       lwz     r5,4(r5)
+       lwz     r5,LOWORD(r5)
 #  endif
 # else
-       lis     r6,(_dl_hwcap+4)@ha
-       lwz     r5,(_dl_hwcap+4)@l(r6)
+       lis     r6,(_dl_hwcap+LOWORD)@ha
+       lwz     r5,(_dl_hwcap+LOWORD)@l(r6)
 # endif
        andis.  r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16)
        beq     L(no_vmx)
@@ -114,44 +115,43 @@ ENTRY (BP_SYM (__sigsetjmp))
        stw     r0,((JB_VRSAVE)*4)(3)
        addi    r6,r5,16
        beq+    L(aligned_save_vmx)
-       lvsr    v0,0,r5
-       vspltisb v1,-1         /* set v1 to all 1's */
-       vspltisb v2,0          /* set v2 to all 0's */
-       vperm   v3,v2,v1,v0   /* v3 contains shift mask with num all 1 bytes on left = misalignment  */
 
+       lvsr    v0,0,r5
+       lvsl    v1,0,r5
+       addi    r6,r5,-16
 
-       /* Special case for v20 we need to preserve what is in save area below v20 before obliterating it */
-       lvx     v5,0,r5
-       vperm   v20,v20,v20,v0
-       vsel    v5,v5,v20,v3
-       vsel    v20,v20,v2,v3
-       stvx    v5,0,r5
+# define save_misaligned_vmx(savevr,prevvr,shiftvr,tmpvr,savegpr,addgpr) \
+       addi    addgpr,addgpr,32;                                        \
+       vperm   tmpvr,prevvr,savevr,shiftvr;                             \
+       stvx    tmpvr,0,savegpr
 
-#define save_2vmx_partial(savevr,prev_savevr,hivr,shiftvr,maskvr,savegpr,addgpr) \
-       addi    addgpr,addgpr,32; \
-       vperm   savevr,savevr,savevr,shiftvr; \
-       vsel    hivr,prev_savevr,savevr,maskvr; \
-       stvx    hivr,0,savegpr;
+       /*
+        * We have to be careful not to corrupt the data below v20 and
+        * above v31. To keep things simple we just rotate both ends in
+        * the opposite direction to our main permute so we can use
+        * the common macro.
+        */
 
-       save_2vmx_partial(v21,v20,v5,v0,v3,r6,r5)
-       save_2vmx_partial(v22,v21,v5,v0,v3,r5,r6)
-       save_2vmx_partial(v23,v22,v5,v0,v3,r6,r5)
-       save_2vmx_partial(v24,v23,v5,v0,v3,r5,r6)
-       save_2vmx_partial(v25,v24,v5,v0,v3,r6,r5)
-       save_2vmx_partial(v26,v25,v5,v0,v3,r5,r6)
-       save_2vmx_partial(v27,v26,v5,v0,v3,r6,r5)
-       save_2vmx_partial(v28,v27,v5,v0,v3,r5,r6)
-       save_2vmx_partial(v29,v28,v5,v0,v3,r6,r5)
-       save_2vmx_partial(v30,v29,v5,v0,v3,r5,r6)
+       /* load and rotate data below v20 */
+       lvx     v2,0,r5
+       vperm   v2,v2,v2,v1
+       save_misaligned_vmx(v20,v2,v0,v3,r5,r6)
+       save_misaligned_vmx(v21,v20,v0,v3,r6,r5)
+       save_misaligned_vmx(v22,v21,v0,v3,r5,r6)
+       save_misaligned_vmx(v23,v22,v0,v3,r6,r5)
+       save_misaligned_vmx(v24,v23,v0,v3,r5,r6)
+       save_misaligned_vmx(v25,v24,v0,v3,r6,r5)
+       save_misaligned_vmx(v26,v25,v0,v3,r5,r6)
+       save_misaligned_vmx(v27,v26,v0,v3,r6,r5)
+       save_misaligned_vmx(v28,v27,v0,v3,r5,r6)
+       save_misaligned_vmx(v29,v28,v0,v3,r6,r5)
+       save_misaligned_vmx(v30,v29,v0,v3,r5,r6)
+       save_misaligned_vmx(v31,v30,v0,v3,r6,r5)
+       /* load and rotate data above v31 */
+       lvx     v2,0,r6
+       vperm   v2,v2,v2,v1
+       save_misaligned_vmx(v2,v31,v0,v3,r5,r6)
 
-       /* Special case for r31 we need to preserve what is in save area above v31 before obliterating it */
-       addi    r5,r5,32
-       vperm   v31,v31,v31,v0
-       lvx     v4,0,r5
-       vsel    v5,v30,v31,v3
-       stvx    v5,0,r6
-       vsel    v4,v31,v4,v3
-       stvx    v4,0,r5
        b       L(no_vmx)
 
 L(aligned_save_vmx):
@@ -179,5 +179,5 @@ L(aligned_save_vmx):
        stvx    31,0,r6
 L(no_vmx):
 #endif
-       b BP_SYM (__sigjmp_save@local)
-END (BP_SYM (__sigsetjmp))
+       b __sigjmp_save_symbol@local
+END (__sigsetjmp_symbol)