| /* Save current context. |
| Copyright (C) 2002-2018 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 <rtld-global-offsets.h> |
| #include <shlib-compat.h> |
| |
| #define __ASSEMBLY__ |
| #include <asm/ptrace.h> |
| #include <asm/errno.h> |
| #include "ucontext_i.h" |
| |
| |
| #if SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4) |
| ENTRY(__novec_getcontext) |
| CALL_MCOUNT 1 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3) |
| std r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3) |
| mflr r0 |
| std r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r3) |
| std r0,FRAME_LR_SAVE(r1) |
| cfi_offset (lr, FRAME_LR_SAVE) |
| std r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r3) |
| stdu r1,-128(r1) |
| cfi_adjust_cfa_offset (128) |
| std r4,(SIGCONTEXT_GP_REGS+(PT_R4*8))(r3) |
| std r5,(SIGCONTEXT_GP_REGS+(PT_R5*8))(r3) |
| std r6,(SIGCONTEXT_GP_REGS+(PT_R6*8))(r3) |
| std r7,(SIGCONTEXT_GP_REGS+(PT_R7*8))(r3) |
| std r8,(SIGCONTEXT_GP_REGS+(PT_R8*8))(r3) |
| std r9,(SIGCONTEXT_GP_REGS+(PT_R9*8))(r3) |
| std r10,(SIGCONTEXT_GP_REGS+(PT_R10*8))(r3) |
| std r11,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r3) |
| std r12,(SIGCONTEXT_GP_REGS+(PT_R12*8))(r3) |
| std r13,(SIGCONTEXT_GP_REGS+(PT_R13*8))(r3) |
| std r14,(SIGCONTEXT_GP_REGS+(PT_R14*8))(r3) |
| std r15,(SIGCONTEXT_GP_REGS+(PT_R15*8))(r3) |
| std r16,(SIGCONTEXT_GP_REGS+(PT_R16*8))(r3) |
| std r17,(SIGCONTEXT_GP_REGS+(PT_R17*8))(r3) |
| std r18,(SIGCONTEXT_GP_REGS+(PT_R18*8))(r3) |
| std r19,(SIGCONTEXT_GP_REGS+(PT_R19*8))(r3) |
| std r20,(SIGCONTEXT_GP_REGS+(PT_R20*8))(r3) |
| std r21,(SIGCONTEXT_GP_REGS+(PT_R21*8))(r3) |
| std r22,(SIGCONTEXT_GP_REGS+(PT_R22*8))(r3) |
| std r23,(SIGCONTEXT_GP_REGS+(PT_R23*8))(r3) |
| std r24,(SIGCONTEXT_GP_REGS+(PT_R24*8))(r3) |
| std r25,(SIGCONTEXT_GP_REGS+(PT_R25*8))(r3) |
| std r26,(SIGCONTEXT_GP_REGS+(PT_R26*8))(r3) |
| std r27,(SIGCONTEXT_GP_REGS+(PT_R27*8))(r3) |
| std r28,(SIGCONTEXT_GP_REGS+(PT_R28*8))(r3) |
| std r29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3) |
| std r30,(SIGCONTEXT_GP_REGS+(PT_R30*8))(r3) |
| std r31,(SIGCONTEXT_GP_REGS+(PT_R31*8))(r3) |
| mfctr r0 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_CTR*8))(r3) |
| mfxer r0 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r3) |
| mfcr r0 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r3) |
| |
| /* Set the return value of swapcontext to "success". R3 is the only |
| register whose value is not preserved in the saved context. */ |
| li r0,0 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r3) |
| |
| /* Zero fill fields that can't be set in user state or are unused. */ |
| std r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(34*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(PT_SOFTE*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(40*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(41*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(42*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(PT_RESULT*8))(r3) |
| |
| /* Set the PT_REGS pointer to the address of sigcontext's gp_regs |
| field. Struct pt_regs and elf_gregset_t are the same thing. |
| We kept the regs field for backwards compatibility with |
| libraries built before we extended sigcontext. */ |
| addi r0,r3,SIGCONTEXT_GP_REGS |
| std r0,SIGCONTEXT_PT_REGS(r3) |
| |
| stfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r3) |
| stfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r3) |
| stfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r3) |
| stfd fp3,(SIGCONTEXT_FP_REGS+(PT_R3*8))(r3) |
| stfd fp4,(SIGCONTEXT_FP_REGS+(PT_R4*8))(r3) |
| stfd fp5,(SIGCONTEXT_FP_REGS+(PT_R5*8))(r3) |
| stfd fp6,(SIGCONTEXT_FP_REGS+(PT_R6*8))(r3) |
| stfd fp7,(SIGCONTEXT_FP_REGS+(PT_R7*8))(r3) |
| stfd fp8,(SIGCONTEXT_FP_REGS+(PT_R8*8))(r3) |
| stfd fp9,(SIGCONTEXT_FP_REGS+(PT_R9*8))(r3) |
| stfd fp10,(SIGCONTEXT_FP_REGS+(PT_R10*8))(r3) |
| stfd fp11,(SIGCONTEXT_FP_REGS+(PT_R11*8))(r3) |
| stfd fp12,(SIGCONTEXT_FP_REGS+(PT_R12*8))(r3) |
| stfd fp13,(SIGCONTEXT_FP_REGS+(PT_R13*8))(r3) |
| stfd fp14,(SIGCONTEXT_FP_REGS+(PT_R14*8))(r3) |
| stfd fp15,(SIGCONTEXT_FP_REGS+(PT_R15*8))(r3) |
| stfd fp16,(SIGCONTEXT_FP_REGS+(PT_R16*8))(r3) |
| stfd fp17,(SIGCONTEXT_FP_REGS+(PT_R17*8))(r3) |
| stfd fp18,(SIGCONTEXT_FP_REGS+(PT_R18*8))(r3) |
| stfd fp19,(SIGCONTEXT_FP_REGS+(PT_R19*8))(r3) |
| stfd fp20,(SIGCONTEXT_FP_REGS+(PT_R20*8))(r3) |
| stfd fp21,(SIGCONTEXT_FP_REGS+(PT_R21*8))(r3) |
| stfd fp22,(SIGCONTEXT_FP_REGS+(PT_R22*8))(r3) |
| stfd fp23,(SIGCONTEXT_FP_REGS+(PT_R23*8))(r3) |
| stfd fp24,(SIGCONTEXT_FP_REGS+(PT_R24*8))(r3) |
| stfd fp25,(SIGCONTEXT_FP_REGS+(PT_R25*8))(r3) |
| stfd fp26,(SIGCONTEXT_FP_REGS+(PT_R26*8))(r3) |
| stfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r3) |
| stfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r3) |
| stfd fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r3) |
| mffs fp0 |
| stfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r3) |
| stfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r3) |
| stfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r3) |
| |
| addi r5,r3,UCONTEXT_SIGMASK |
| li r4,0 |
| li r3,SIG_BLOCK |
| bl JUMPTARGET(__sigprocmask) |
| nop |
| |
| ld r0,128+FRAME_LR_SAVE(r1) |
| addi r1,r1,128 |
| mtlr r0 |
| blr |
| PSEUDO_END(__novec_getcontext) |
| |
| compat_symbol (libc, __novec_getcontext, getcontext, GLIBC_2_3) |
| |
| #endif |
| |
| .section ".toc","aw" |
| .LC__dl_hwcap: |
| #ifdef SHARED |
| .tc _rtld_global_ro[TC],_rtld_global_ro |
| #else |
| .tc _dl_hwcap[TC],_dl_hwcap |
| #endif |
| .section ".text" |
| |
| .machine "altivec" |
| ENTRY(__getcontext) |
| CALL_MCOUNT 1 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3) |
| std r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3) |
| mflr r0 |
| std r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r3) |
| std r0,FRAME_LR_SAVE(r1) |
| cfi_offset (lr, FRAME_LR_SAVE) |
| std r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r3) |
| stdu r1,-128(r1) |
| cfi_adjust_cfa_offset (128) |
| std r4,(SIGCONTEXT_GP_REGS+(PT_R4*8))(r3) |
| std r5,(SIGCONTEXT_GP_REGS+(PT_R5*8))(r3) |
| std r6,(SIGCONTEXT_GP_REGS+(PT_R6*8))(r3) |
| std r7,(SIGCONTEXT_GP_REGS+(PT_R7*8))(r3) |
| std r8,(SIGCONTEXT_GP_REGS+(PT_R8*8))(r3) |
| std r9,(SIGCONTEXT_GP_REGS+(PT_R9*8))(r3) |
| std r10,(SIGCONTEXT_GP_REGS+(PT_R10*8))(r3) |
| std r11,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r3) |
| std r12,(SIGCONTEXT_GP_REGS+(PT_R12*8))(r3) |
| std r13,(SIGCONTEXT_GP_REGS+(PT_R13*8))(r3) |
| std r14,(SIGCONTEXT_GP_REGS+(PT_R14*8))(r3) |
| std r15,(SIGCONTEXT_GP_REGS+(PT_R15*8))(r3) |
| std r16,(SIGCONTEXT_GP_REGS+(PT_R16*8))(r3) |
| std r17,(SIGCONTEXT_GP_REGS+(PT_R17*8))(r3) |
| std r18,(SIGCONTEXT_GP_REGS+(PT_R18*8))(r3) |
| std r19,(SIGCONTEXT_GP_REGS+(PT_R19*8))(r3) |
| std r20,(SIGCONTEXT_GP_REGS+(PT_R20*8))(r3) |
| std r21,(SIGCONTEXT_GP_REGS+(PT_R21*8))(r3) |
| std r22,(SIGCONTEXT_GP_REGS+(PT_R22*8))(r3) |
| std r23,(SIGCONTEXT_GP_REGS+(PT_R23*8))(r3) |
| std r24,(SIGCONTEXT_GP_REGS+(PT_R24*8))(r3) |
| std r25,(SIGCONTEXT_GP_REGS+(PT_R25*8))(r3) |
| std r26,(SIGCONTEXT_GP_REGS+(PT_R26*8))(r3) |
| std r27,(SIGCONTEXT_GP_REGS+(PT_R27*8))(r3) |
| std r28,(SIGCONTEXT_GP_REGS+(PT_R28*8))(r3) |
| std r29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3) |
| std r30,(SIGCONTEXT_GP_REGS+(PT_R30*8))(r3) |
| std r31,(SIGCONTEXT_GP_REGS+(PT_R31*8))(r3) |
| mfctr r0 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_CTR*8))(r3) |
| mfxer r0 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r3) |
| mfcr r0 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r3) |
| |
| /* Set the return value of swapcontext to "success". R3 is the only |
| register whose value is not preserved in the saved context. */ |
| li r0,0 |
| std r0,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r3) |
| |
| /* Zero fill fields that can't be set in user state or are unused. */ |
| std r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(34*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(PT_SOFTE*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(40*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(41*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(42*8))(r3) |
| std r0,(SIGCONTEXT_GP_REGS+(PT_RESULT*8))(r3) |
| |
| /* Set the PT_REGS pointer to the address of sigcontext's gp_regs |
| field. Struct pt_regs and elf_gregset_t are the same thing. |
| We kept the regs field for backwards compatibility with |
| libraries built before we extended sigcontext. */ |
| addi r0,r3,SIGCONTEXT_GP_REGS |
| std r0,SIGCONTEXT_PT_REGS(r3) |
| |
| stfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r3) |
| stfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r3) |
| stfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r3) |
| stfd fp3,(SIGCONTEXT_FP_REGS+(PT_R3*8))(r3) |
| stfd fp4,(SIGCONTEXT_FP_REGS+(PT_R4*8))(r3) |
| stfd fp5,(SIGCONTEXT_FP_REGS+(PT_R5*8))(r3) |
| stfd fp6,(SIGCONTEXT_FP_REGS+(PT_R6*8))(r3) |
| stfd fp7,(SIGCONTEXT_FP_REGS+(PT_R7*8))(r3) |
| stfd fp8,(SIGCONTEXT_FP_REGS+(PT_R8*8))(r3) |
| stfd fp9,(SIGCONTEXT_FP_REGS+(PT_R9*8))(r3) |
| stfd fp10,(SIGCONTEXT_FP_REGS+(PT_R10*8))(r3) |
| stfd fp11,(SIGCONTEXT_FP_REGS+(PT_R11*8))(r3) |
| stfd fp12,(SIGCONTEXT_FP_REGS+(PT_R12*8))(r3) |
| stfd fp13,(SIGCONTEXT_FP_REGS+(PT_R13*8))(r3) |
| stfd fp14,(SIGCONTEXT_FP_REGS+(PT_R14*8))(r3) |
| stfd fp15,(SIGCONTEXT_FP_REGS+(PT_R15*8))(r3) |
| stfd fp16,(SIGCONTEXT_FP_REGS+(PT_R16*8))(r3) |
| stfd fp17,(SIGCONTEXT_FP_REGS+(PT_R17*8))(r3) |
| stfd fp18,(SIGCONTEXT_FP_REGS+(PT_R18*8))(r3) |
| stfd fp19,(SIGCONTEXT_FP_REGS+(PT_R19*8))(r3) |
| stfd fp20,(SIGCONTEXT_FP_REGS+(PT_R20*8))(r3) |
| stfd fp21,(SIGCONTEXT_FP_REGS+(PT_R21*8))(r3) |
| stfd fp22,(SIGCONTEXT_FP_REGS+(PT_R22*8))(r3) |
| stfd fp23,(SIGCONTEXT_FP_REGS+(PT_R23*8))(r3) |
| stfd fp24,(SIGCONTEXT_FP_REGS+(PT_R24*8))(r3) |
| stfd fp25,(SIGCONTEXT_FP_REGS+(PT_R25*8))(r3) |
| stfd fp26,(SIGCONTEXT_FP_REGS+(PT_R26*8))(r3) |
| stfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r3) |
| stfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r3) |
| stfd fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r3) |
| mffs fp0 |
| stfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r3) |
| stfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r3) |
| stfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r3) |
| |
| ld r5,.LC__dl_hwcap@toc(r2) |
| # ifdef SHARED |
| /* Load _rtld-global._dl_hwcap. */ |
| ld r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r5) |
| # else |
| ld r5,0(r5) /* Load extern _dl_hwcap. */ |
| # endif |
| la r10,(SIGCONTEXT_V_RESERVE+8)(r3) |
| la r9,(SIGCONTEXT_V_RESERVE+24)(r3) |
| |
| andis. r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16) |
| |
| clrrdi r10,r10,4 |
| beq L(has_no_vec) |
| clrrdi r9,r9,4 |
| mr r5,r10 /* Capture *v_regs value in r5. */ |
| |
| stvx v0,0,r10 |
| stvx v1,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v2,0,r10 |
| stvx v3,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v4,0,r10 |
| stvx v5,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v6,0,r10 |
| stvx v7,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v8,0,r10 |
| stvx v9,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v10,0,r10 |
| stvx v11,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v12,0,r10 |
| stvx v13,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v14,0,r10 |
| stvx v15,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v16,0,r10 |
| stvx v17,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v18,0,r10 |
| stvx v19,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v20,0,r10 |
| stvx v21,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v22,0,r10 |
| stvx v23,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v24,0,r10 |
| stvx v25,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v26,0,r10 |
| stvx v27,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v28,0,r10 |
| stvx v29,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| stvx v30,0,r10 |
| stvx v31,0,r9 |
| addi r10,r10,32 |
| addi r9,r9,32 |
| |
| mfvscr v0 |
| mfspr r0,VRSAVE |
| stvx v0,0,r10 |
| stw r0,0(9) |
| |
| L(has_no_vec): |
| /* |
| Store either a NULL or a quadword aligned pointer to the Vector register |
| array into *v_regs. |
| */ |
| std r5,(SIGCONTEXT_V_REGS_PTR)(r3) |
| |
| addi r5,r3,UCONTEXT_SIGMASK |
| li r4,0 |
| li r3,SIG_BLOCK |
| bl JUMPTARGET(__sigprocmask) |
| nop |
| |
| ld r0,128+FRAME_LR_SAVE(r1) |
| addi r1,r1,128 |
| mtlr r0 |
| blr |
| PSEUDO_END(__getcontext) |
| |
| versioned_symbol (libc, __getcontext, getcontext, GLIBC_2_3_4) |
