diff options
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/powerpc64/setjmp-common.S')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/powerpc64/setjmp-common.S | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/setjmp-common.S b/REORG.TODO/sysdeps/powerpc/powerpc64/setjmp-common.S new file mode 100644 index 0000000000..20f6cf364c --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/powerpc64/setjmp-common.S @@ -0,0 +1,245 @@ +/* setjmp for PowerPC64. + Copyright (C) 1995-2017 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <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 + +#ifndef __NO_VMX__ + .section ".toc","aw" +.LC__dl_hwcap: +# ifdef SHARED +# if IS_IN (rtld) + /* Inside ld.so we use the local alias to avoid runtime GOT + relocations. */ + .tc _rtld_local_ro[TC],_rtld_local_ro +# else + .tc _rtld_global_ro[TC],_rtld_global_ro +# endif +# else + .tc _dl_hwcap[TC],_dl_hwcap +# endif + .section ".text" +#endif + + .machine "altivec" +ENTRY (setjmp_symbol) + CALL_MCOUNT 1 + li r4,1 /* Set second argument to 1. */ + b JUMPTARGET (GLUE(__sigsetjmp_symbol,_ent)) +END (setjmp_symbol) + +#if defined SHARED && !IS_IN (rtld) && !defined __NO_VMX__ +/* When called from within libc we need a special version of _setjmp + that saves r2 since the call won't go via a plt call stub. See + bugz #269. __GI__setjmp is used in csu/libc-start.c when + HAVE_CLEANUP_JMP_BUF is defined. */ +ENTRY (__GI__setjmp) + std r2,FRAME_TOC_SAVE(r1) /* Save the callers TOC in the save area. */ + CALL_MCOUNT 1 + li r4,0 /* Set second argument to 0. */ + b JUMPTARGET (GLUE(__sigsetjmp_symbol,_ent)) +END (__GI__setjmp) +#endif + +ENTRY (_setjmp_symbol) + CALL_MCOUNT 1 + li r4,0 /* Set second argument to 0. */ + b JUMPTARGET (GLUE(__sigsetjmp_symbol,_ent)) +END (_setjmp_symbol) +libc_hidden_def (_setjmp_symbol) + +ENTRY (__sigsetjmp_symbol) + CALL_MCOUNT 2 +JUMPTARGET(GLUE(__sigsetjmp_symbol,_ent)): +#ifdef PTR_MANGLE + mr r5, r1 + PTR_MANGLE (r5, r6) + std r5,(JB_GPR1*8)(3) +#else + std r1,(JB_GPR1*8)(3) +#endif + mflr r0 +#if defined SHARED && !IS_IN (rtld) + ld r5,FRAME_TOC_SAVE(r1) /* Retrieve the callers TOC. */ + std r5,(JB_GPR2*8)(3) +#else + std r2,(JB_GPR2*8)(3) +#endif + /* setjmp probe expects longjmp first argument (8@3), second argument + (-4@4), and target address (8@0), respectively. */ + LIBC_PROBE (setjmp, 3, 8@3, -4@4, 8@0) + std r14,((JB_GPRS+0)*8)(3) + stfd fp14,((JB_FPRS+0)*8)(3) +#ifdef PTR_MANGLE + PTR_MANGLE2 (r0, r6) +#endif + std r0,(JB_LR*8)(3) + std r15,((JB_GPRS+1)*8)(3) + stfd fp15,((JB_FPRS+1)*8)(3) + mfcr r0 + std r16,((JB_GPRS+2)*8)(3) + stfd fp16,((JB_FPRS+2)*8)(3) + stw r0,((JB_CR*8)+4)(3) /* 32-bit CR. */ + std r17,((JB_GPRS+3)*8)(3) + stfd fp17,((JB_FPRS+3)*8)(3) + std r18,((JB_GPRS+4)*8)(3) + stfd fp18,((JB_FPRS+4)*8)(3) + std r19,((JB_GPRS+5)*8)(3) + stfd fp19,((JB_FPRS+5)*8)(3) + std r20,((JB_GPRS+6)*8)(3) + stfd fp20,((JB_FPRS+6)*8)(3) + std r21,((JB_GPRS+7)*8)(3) + stfd fp21,((JB_FPRS+7)*8)(3) + std r22,((JB_GPRS+8)*8)(3) + stfd fp22,((JB_FPRS+8)*8)(3) + std r23,((JB_GPRS+9)*8)(3) + stfd fp23,((JB_FPRS+9)*8)(3) + std r24,((JB_GPRS+10)*8)(3) + stfd fp24,((JB_FPRS+10)*8)(3) + std r25,((JB_GPRS+11)*8)(3) + stfd fp25,((JB_FPRS+11)*8)(3) + std r26,((JB_GPRS+12)*8)(3) + stfd fp26,((JB_FPRS+12)*8)(3) + std r27,((JB_GPRS+13)*8)(3) + stfd fp27,((JB_FPRS+13)*8)(3) + std r28,((JB_GPRS+14)*8)(3) + stfd fp28,((JB_FPRS+14)*8)(3) + std r29,((JB_GPRS+15)*8)(3) + stfd fp29,((JB_FPRS+15)*8)(3) + std r30,((JB_GPRS+16)*8)(3) + stfd fp30,((JB_FPRS+16)*8)(3) + std r31,((JB_GPRS+17)*8)(3) + stfd fp31,((JB_FPRS+17)*8)(3) +#ifndef __NO_VMX__ + ld r6,.LC__dl_hwcap@toc(r2) +# ifdef SHARED + /* Load _rtld-global._dl_hwcap. */ + ld r6,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r6) +# else + ld r6,0(r6) /* Load extern _dl_hwcap. */ +# endif + andis. r6,r6,(PPC_FEATURE_HAS_ALTIVEC >> 16) + beq L(no_vmx) + la r5,((JB_VRS)*8)(3) + andi. r6,r5,0xf + mfspr r0,VRSAVE + stw r0,((JB_VRSAVE)*8)(3) /* 32-bit VRSAVE. */ + addi r6,r5,16 + beq+ L(aligned_save_vmx) + + lvsr v0,0,r5 + lvsl v1,0,r5 + addi r6,r5,-16 + +# define save_misaligned_vmx(savevr,prevvr,shiftvr,tmpvr,savegpr,addgpr) \ + addi addgpr,addgpr,32; \ + vperm tmpvr,prevvr,savevr,shiftvr; \ + stvx tmpvr,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. + */ + + /* 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) + + b L(no_vmx) + +L(aligned_save_vmx): + stvx 20,0,r5 + addi r5,r5,32 + stvx 21,0,r6 + addi r6,r6,32 + stvx 22,0,r5 + addi r5,r5,32 + stvx 23,0,r6 + addi r6,r6,32 + stvx 24,0,r5 + addi r5,r5,32 + stvx 25,0,r6 + addi r6,r6,32 + stvx 26,0,r5 + addi r5,r5,32 + stvx 27,0,r6 + addi r6,r6,32 + stvx 28,0,r5 + addi r5,r5,32 + stvx 29,0,r6 + addi r6,r6,32 + stvx 30,0,r5 + stvx 31,0,r6 +L(no_vmx): +#else + li r6,0 +#endif +#if IS_IN (rtld) + li r3,0 + blr +#elif defined SHARED + b JUMPTARGET (__sigjmp_save_symbol) +#else + mflr r0 + std r0,FRAME_LR_SAVE(r1) + stdu r1,-FRAME_MIN_SIZE(r1) + cfi_adjust_cfa_offset(FRAME_MIN_SIZE) + cfi_offset(lr,FRAME_LR_SAVE) + bl JUMPTARGET (__sigjmp_save_symbol) + nop + ld r0,FRAME_MIN_SIZE+FRAME_LR_SAVE(r1) + addi r1,r1,FRAME_MIN_SIZE + mtlr r0 + blr +#endif +END (__sigsetjmp_symbol) + +#if defined SHARED && !IS_IN (rtld) && !defined __NO_VMX__ +/* When called from within libc we need a special version of __sigsetjmp + that saves r2 since the call won't go via a plt call stub. See + bugz #269. */ +ENTRY (__GI___sigsetjmp) + std r2,FRAME_TOC_SAVE(r1) /* Save the callers TOC in the save area. */ + CALL_MCOUNT 1 + b JUMPTARGET (GLUE(__sigsetjmp_symbol,_ent)) +END (__GI___sigsetjmp) +#endif |