diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S | 797 |
1 files changed, 0 insertions, 797 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S deleted file mode 100644 index b08d269424..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S +++ /dev/null @@ -1,797 +0,0 @@ -/* Save current context and install the given one. - Copyright (C) 2002-2017 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 <rtld-global-offsets.h> -#include <shlib-compat.h> - -#define __ASSEMBLY__ -#include <asm/ptrace.h> -#include "ucontext_i.h" -#include <asm/errno.h> - - .section ".toc","aw" -.LC__dl_hwcap: -#ifdef SHARED - .tc _rtld_global_ro[TC],_rtld_global_ro -#else - .tc _dl_hwcap[TC],_dl_hwcap -#endif - -#if SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4) - .section ".text" -ENTRY(__novec_swapcontext) - CALL_MCOUNT 2 - std r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3) - std r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3) - mflr r0 - std r31,-8(1) - cfi_offset(r31,-8) - 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 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) - - mr r31,r4 - addi r5,r3,UCONTEXT_SIGMASK - addi r4,r4,UCONTEXT_SIGMASK - li r3,SIG_SETMASK - bl JUMPTARGET(__sigprocmask) - nop - cmpdi r3,0 - bne L(nv_error_exit) - -/* - * If this new ucontext refers to the point where we were interrupted - * by a signal, we have to use the rt_sigreturn system call to - * return to the context so we get both LR and CTR restored. - * - * Otherwise, the context we are restoring is either just after - * a procedure call (getcontext/swapcontext) or at the beginning - * of a procedure call (makecontext), so we don't need to restore - * msr and ctr. We don't restore r13 since it will be used as - * the TLS pointer. */ - ld r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r31) - cmpdi r0,0 - bne L(nv_do_sigret) - - ld r8,.LC__dl_hwcap@toc(r2) -# ifdef SHARED -/* Load _rtld-global._dl_hwcap. */ - ld r8,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r8) -# else - ld r8,0(r8) /* Load extern _dl_hwcap. */ -# endif - - lfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r31) - lfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31) - lfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31) - -# ifdef _ARCH_PWR6 - /* Use the extended four-operand version of the mtfsf insn. */ - .machine push - .machine "power6" - - mtfsf 0xff,fp0,1,0 - - .machine pop -# else - /* Availability of DFP indicates a 64-bit FPSCR. */ - andi. r6,r8,PPC_FEATURE_HAS_DFP - beq 5f - - .machine push - .machine "power6" - - mtfsf 0xff,fp0,1,0 - - .machine pop - - b 6f - /* Continue to operate on the FPSCR as if it were 32-bits. */ -5: - mtfsf 0xff,fp0 -6: -#endif /* _ARCH_PWR6 */ - - lfd fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31) - lfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31) - lfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31) - lfd fp26,(SIGCONTEXT_FP_REGS+(PT_R26*8))(r31) - lfd fp25,(SIGCONTEXT_FP_REGS+(PT_R25*8))(r31) - lfd fp24,(SIGCONTEXT_FP_REGS+(PT_R24*8))(r31) - lfd fp23,(SIGCONTEXT_FP_REGS+(PT_R23*8))(r31) - lfd fp22,(SIGCONTEXT_FP_REGS+(PT_R22*8))(r31) - lfd fp21,(SIGCONTEXT_FP_REGS+(PT_R21*8))(r31) - lfd fp20,(SIGCONTEXT_FP_REGS+(PT_R20*8))(r31) - lfd fp19,(SIGCONTEXT_FP_REGS+(PT_R19*8))(r31) - lfd fp18,(SIGCONTEXT_FP_REGS+(PT_R18*8))(r31) - lfd fp17,(SIGCONTEXT_FP_REGS+(PT_R17*8))(r31) - lfd fp16,(SIGCONTEXT_FP_REGS+(PT_R16*8))(r31) - lfd fp15,(SIGCONTEXT_FP_REGS+(PT_R15*8))(r31) - lfd fp14,(SIGCONTEXT_FP_REGS+(PT_R14*8))(r31) - lfd fp13,(SIGCONTEXT_FP_REGS+(PT_R13*8))(r31) - lfd fp12,(SIGCONTEXT_FP_REGS+(PT_R12*8))(r31) - lfd fp11,(SIGCONTEXT_FP_REGS+(PT_R11*8))(r31) - lfd fp10,(SIGCONTEXT_FP_REGS+(PT_R10*8))(r31) - lfd fp9,(SIGCONTEXT_FP_REGS+(PT_R9*8))(r31) - lfd fp8,(SIGCONTEXT_FP_REGS+(PT_R8*8))(r31) - lfd fp7,(SIGCONTEXT_FP_REGS+(PT_R7*8))(r31) - lfd fp6,(SIGCONTEXT_FP_REGS+(PT_R6*8))(r31) - lfd fp5,(SIGCONTEXT_FP_REGS+(PT_R5*8))(r31) - lfd fp4,(SIGCONTEXT_FP_REGS+(PT_R4*8))(r31) - lfd fp3,(SIGCONTEXT_FP_REGS+(PT_R3*8))(r31) - lfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r31) - lfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r31) - lfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r31) - - ld r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r31) - ld r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r31) - mtlr r0 - ld r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r31) - ld r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r31) - ld r3,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r31) - mtxer r0 - ld r4,(SIGCONTEXT_GP_REGS+(PT_R4*8))(r31) - ld r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r31) - ld r5,(SIGCONTEXT_GP_REGS+(PT_R5*8))(r31) - mtcr r0 - ld r6,(SIGCONTEXT_GP_REGS+(PT_R6*8))(r31) - ld r7,(SIGCONTEXT_GP_REGS+(PT_R7*8))(r31) - ld r8,(SIGCONTEXT_GP_REGS+(PT_R8*8))(r31) - ld r9,(SIGCONTEXT_GP_REGS+(PT_R9*8))(r31) - ld r10,(SIGCONTEXT_GP_REGS+(PT_R10*8))(r31) - ld r11,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r31) - ld r12,(SIGCONTEXT_GP_REGS+(PT_R12*8))(r31) - /* Don't reload the thread ID or TLS pointer (r13). */ - ld r14,(SIGCONTEXT_GP_REGS+(PT_R14*8))(r31) - ld r15,(SIGCONTEXT_GP_REGS+(PT_R15*8))(r31) - ld r16,(SIGCONTEXT_GP_REGS+(PT_R16*8))(r31) - ld r17,(SIGCONTEXT_GP_REGS+(PT_R17*8))(r31) - ld r18,(SIGCONTEXT_GP_REGS+(PT_R18*8))(r31) - ld r19,(SIGCONTEXT_GP_REGS+(PT_R19*8))(r31) - ld r20,(SIGCONTEXT_GP_REGS+(PT_R20*8))(r31) - ld r21,(SIGCONTEXT_GP_REGS+(PT_R21*8))(r31) - ld r22,(SIGCONTEXT_GP_REGS+(PT_R22*8))(r31) - ld r23,(SIGCONTEXT_GP_REGS+(PT_R23*8))(r31) - ld r24,(SIGCONTEXT_GP_REGS+(PT_R24*8))(r31) - ld r25,(SIGCONTEXT_GP_REGS+(PT_R25*8))(r31) - ld r26,(SIGCONTEXT_GP_REGS+(PT_R26*8))(r31) - ld r27,(SIGCONTEXT_GP_REGS+(PT_R27*8))(r31) - ld r28,(SIGCONTEXT_GP_REGS+(PT_R28*8))(r31) - ld r29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r31) - ld r30,(SIGCONTEXT_GP_REGS+(PT_R30*8))(r31) - - /* Now we branch to the "Next Instruction Pointer" from the saved - context. With the powerpc64 instruction set there is no good way to - do this (from user state) without clobbering either the LR or CTR. - The makecontext and swapcontext functions depend on the callers - LR being preserved so we use the CTR. */ - ld r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r31) - mtctr r0 - ld r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r31) - ld r31,(SIGCONTEXT_GP_REGS+(PT_R31*8))(r31) - bctr - -L(nv_error_exit): - ld r0,128+FRAME_LR_SAVE(r1) - addi r1,r1,128 - mtlr r0 - ld r31,-8(r1) - blr - - /* At this point we assume that the ucontext was created by a - rt_signal and we should use rt_sigreturn to restore the original - state. As of the 2.4.21 kernel the ucontext is the first thing - (offset 0) in the rt_signal frame and rt_sigreturn expects the - ucontext address in R1. Normally the rt-signal trampoline handles - this by popping dummy frame before the rt_signal syscall. In our - case the stack may not be in its original (signal handler return with - R1 pointing at the dummy frame) state. We do have the ucontext - address in R3, so simply copy R3 to R1 before the syscall. */ -L(nv_do_sigret): - mr r1,r3, - li r0,SYS_ify(rt_sigreturn) - sc - /* No return. */ - -PSEUDO_END(__novec_swapcontext) - -compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3) - -#endif - - .section ".text" - .machine "altivec" -ENTRY(__swapcontext) - CALL_MCOUNT 2 - std r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3) - std r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3) - mflr r0 - std r31,-8(1) - cfi_offset(r31,-8) - 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 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 r8,.LC__dl_hwcap@toc(r2) -#ifdef SHARED -/* Load _rtld-global._dl_hwcap. */ - ld r8,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r8) -#else - ld r8,0(r8) /* Load extern _dl_hwcap. */ -#endif - la r10,(SIGCONTEXT_V_RESERVE+8)(r3) - la r9,(SIGCONTEXT_V_RESERVE+24)(r3) - - andis. r6,r8,(PPC_FEATURE_HAS_ALTIVEC >> 16) - - clrrdi r10,r10,4 - beq L(has_no_vec) - - clrrdi r9,r9,4 - mr r8,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(r9) - -L(has_no_vec): -/* - Store either a NULL or a quadword aligned pointer to the Vector register - array into *v_regs. -*/ - std r8,(SIGCONTEXT_V_REGS_PTR)(r3) - - mr r31,r4 - addi r5,r3,UCONTEXT_SIGMASK - addi r4,r4,UCONTEXT_SIGMASK - li r3,SIG_SETMASK - bl JUMPTARGET(__sigprocmask) - nop - cmpdi r3,0 - bne L(error_exit) - -/* - * If this new ucontext refers to the point where we were interrupted - * by a signal, we have to use the rt_sigreturn system call to - * return to the context so we get both LR and CTR restored. - * - * Otherwise, the context we are restoring is either just after - * a procedure call (getcontext/swapcontext) or at the beginning - * of a procedure call (makecontext), so we don't need to restore - * msr and ctr. We don't restore r13 since it will be used as - * the TLS pointer. */ - ld r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r31) - cmpdi r0,0 - bne L(do_sigret) - - ld r8,.LC__dl_hwcap@toc(r2) - ld r10,(SIGCONTEXT_V_REGS_PTR)(r31) -# ifdef SHARED -/* Load _rtld-global._dl_hwcap. */ - ld r8,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r8) -# else - ld r8,0(r8) /* Load extern _dl_hwcap. */ -# endif - andis. r6,r8,(PPC_FEATURE_HAS_ALTIVEC >> 16) - beq L(has_no_vec2) - - cmpdi r10,0 - beq L(has_no_vec2) - lwz r0,(33*16)(r10) - - li r9,(16*32) - mtspr VRSAVE,r0 - cmpwi r0,0 - beq L(has_no_vec2) - - lvx v19,r9,r10 - la r9,(16)(r10) - - lvx v0,0,r10 - lvx v1,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - mtvscr v19 - lvx v2,0,r10 - lvx v3,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v4,0,r10 - lvx v5,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v6,0,r10 - lvx v7,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v8,0,r10 - lvx v9,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v10,0,r10 - lvx v11,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v12,0,r10 - lvx v13,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v14,0,r10 - lvx v15,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v16,0,r10 - lvx v17,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v18,0,r10 - lvx v19,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v20,0,r10 - lvx v21,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v22,0,r10 - lvx v23,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v24,0,r10 - lvx v25,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v26,0,r10 - lvx v27,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v28,0,r10 - lvx v29,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v30,0,r10 - lvx v31,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - lvx v10,0,r10 - lvx v11,0,r9 - addi r10,r10,32 - addi r9,r9,32 - -L(has_no_vec2): - - lfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r31) - lfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31) - lfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31) - -# ifdef _ARCH_PWR6 - /* Use the extended four-operand version of the mtfsf insn. */ - .machine push - .machine "power6" - - mtfsf 0xff,fp0,1,0 - - .machine pop -# else - /* Availability of DFP indicates a 64-bit FPSCR. */ - andi. r6,r8,PPC_FEATURE_HAS_DFP - beq 7f - - .machine push - .machine "power6" - - mtfsf 0xff,fp0,1,0 - - .machine pop - - b 8f - /* Continue to operate on the FPSCR as if it were 32-bits. */ -7: - mtfsf 0xff,fp0 -8: -#endif /* _ARCH_PWR6 */ - - lfd fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31) - lfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31) - lfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31) - lfd fp26,(SIGCONTEXT_FP_REGS+(PT_R26*8))(r31) - lfd fp25,(SIGCONTEXT_FP_REGS+(PT_R25*8))(r31) - lfd fp24,(SIGCONTEXT_FP_REGS+(PT_R24*8))(r31) - lfd fp23,(SIGCONTEXT_FP_REGS+(PT_R23*8))(r31) - lfd fp22,(SIGCONTEXT_FP_REGS+(PT_R22*8))(r31) - lfd fp21,(SIGCONTEXT_FP_REGS+(PT_R21*8))(r31) - lfd fp20,(SIGCONTEXT_FP_REGS+(PT_R20*8))(r31) - lfd fp19,(SIGCONTEXT_FP_REGS+(PT_R19*8))(r31) - lfd fp18,(SIGCONTEXT_FP_REGS+(PT_R18*8))(r31) - lfd fp17,(SIGCONTEXT_FP_REGS+(PT_R17*8))(r31) - lfd fp16,(SIGCONTEXT_FP_REGS+(PT_R16*8))(r31) - lfd fp15,(SIGCONTEXT_FP_REGS+(PT_R15*8))(r31) - lfd fp14,(SIGCONTEXT_FP_REGS+(PT_R14*8))(r31) - lfd fp13,(SIGCONTEXT_FP_REGS+(PT_R13*8))(r31) - lfd fp12,(SIGCONTEXT_FP_REGS+(PT_R12*8))(r31) - lfd fp11,(SIGCONTEXT_FP_REGS+(PT_R11*8))(r31) - lfd fp10,(SIGCONTEXT_FP_REGS+(PT_R10*8))(r31) - lfd fp9,(SIGCONTEXT_FP_REGS+(PT_R9*8))(r31) - lfd fp8,(SIGCONTEXT_FP_REGS+(PT_R8*8))(r31) - lfd fp7,(SIGCONTEXT_FP_REGS+(PT_R7*8))(r31) - lfd fp6,(SIGCONTEXT_FP_REGS+(PT_R6*8))(r31) - lfd fp5,(SIGCONTEXT_FP_REGS+(PT_R5*8))(r31) - lfd fp4,(SIGCONTEXT_FP_REGS+(PT_R4*8))(r31) - lfd fp3,(SIGCONTEXT_FP_REGS+(PT_R3*8))(r31) - lfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r31) - lfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r31) - lfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r31) - - ld r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r31) - ld r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r31) - mtlr r0 - ld r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r31) - ld r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r31) - ld r3,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r31) - mtxer r0 - ld r4,(SIGCONTEXT_GP_REGS+(PT_R4*8))(r31) - ld r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r31) - ld r5,(SIGCONTEXT_GP_REGS+(PT_R5*8))(r31) - ld r6,(SIGCONTEXT_GP_REGS+(PT_R6*8))(r31) - ld r7,(SIGCONTEXT_GP_REGS+(PT_R7*8))(r31) - ld r8,(SIGCONTEXT_GP_REGS+(PT_R8*8))(r31) - ld r9,(SIGCONTEXT_GP_REGS+(PT_R9*8))(r31) - mtcr r0 - ld r10,(SIGCONTEXT_GP_REGS+(PT_R10*8))(r31) - ld r11,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r31) - ld r12,(SIGCONTEXT_GP_REGS+(PT_R12*8))(r31) - /* Don't reload the thread ID or TLS pointer (r13). */ - ld r14,(SIGCONTEXT_GP_REGS+(PT_R14*8))(r31) - ld r15,(SIGCONTEXT_GP_REGS+(PT_R15*8))(r31) - ld r16,(SIGCONTEXT_GP_REGS+(PT_R16*8))(r31) - ld r17,(SIGCONTEXT_GP_REGS+(PT_R17*8))(r31) - ld r18,(SIGCONTEXT_GP_REGS+(PT_R18*8))(r31) - ld r19,(SIGCONTEXT_GP_REGS+(PT_R19*8))(r31) - ld r20,(SIGCONTEXT_GP_REGS+(PT_R20*8))(r31) - ld r21,(SIGCONTEXT_GP_REGS+(PT_R21*8))(r31) - ld r22,(SIGCONTEXT_GP_REGS+(PT_R22*8))(r31) - ld r23,(SIGCONTEXT_GP_REGS+(PT_R23*8))(r31) - ld r24,(SIGCONTEXT_GP_REGS+(PT_R24*8))(r31) - ld r25,(SIGCONTEXT_GP_REGS+(PT_R25*8))(r31) - ld r26,(SIGCONTEXT_GP_REGS+(PT_R26*8))(r31) - ld r27,(SIGCONTEXT_GP_REGS+(PT_R27*8))(r31) - ld r28,(SIGCONTEXT_GP_REGS+(PT_R28*8))(r31) - ld r29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r31) - ld r30,(SIGCONTEXT_GP_REGS+(PT_R30*8))(r31) - - /* Now we branch to the "Next Instruction Pointer" from the saved - context. With the powerpc64 instruction set there is no good way to - do this (from user state) without clobbering either the LR or CTR. - The makecontext and swapcontext functions depend on the callers - LR being preserved so we use the CTR. */ - ld r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r31) - mtctr r0 - ld r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r31) - ld r31,(SIGCONTEXT_GP_REGS+(PT_R31*8))(r31) - bctr - -L(error_exit): - ld r0,128+FRAME_LR_SAVE(r1) - addi r1,r1,128 - mtlr r0 - ld r31,-8(r1) - blr - - /* At this point we assume that the ucontext was created by a - rt_signal and we should use rt_sigreturn to restore the original - state. As of the 2.4.21 kernel the ucontext is the first thing - (offset 0) in the rt_signal frame and rt_sigreturn expects the - ucontext address in R1. Normally the rt-signal trampoline handles - this by popping dummy frame before the rt_signal syscall. In our - case the stack may not be in its original (signal handler return with - R1 pointing at the dummy frame) state. We do have the ucontext - address in R3, so simply copy R3 to R1 before the syscall. */ -L(do_sigret): - mr r1,r3, - li r0,SYS_ify(rt_sigreturn) - sc - /* No return. */ - -PSEUDO_END(__swapcontext) - -versioned_symbol (libc, __swapcontext, swapcontext, GLIBC_2_3_4) |