diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S | 517 |
1 files changed, 0 insertions, 517 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S b/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S deleted file mode 100644 index 0c7b945ed2..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S +++ /dev/null @@ -1,517 +0,0 @@ -/* Save current context and jump to a new context. - Copyright (C) 2005, 2006 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, write to the Free - Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA - 02110-1301 USA. */ - -/* This is the common implementation of setcontext for powerpc32. - It not complete in itself should be included in to a framework that - defines: - __CONTEXT_FUNC_NAME - and if appropriate: - __CONTEXT_ENABLE_FPRS - __CONTEXT_ENABLE_VRS - Any archecture that implements the Vector unit is assumed to also - implement the floating unit. */ - -/* Stack frame offsets. */ -#define _FRAME_BACKCHAIN 0 -#define _FRAME_LR_SAVE 4 -#define _FRAME_PARM_SAVE1 8 -#define _FRAME_PARM_SAVE2 12 -#define _FRAME_PARM_SAVE3 16 -#define _FRAME_PARM_SAVE4 20 - -#ifdef __CONTEXT_ENABLE_VRS - .machine "altivec" -#endif -ENTRY(__CONTEXT_FUNC_NAME) - stwu r1,-16(r1) - cfi_adjust_cfa_offset (16) -/* Insure that the _UC_REGS start on a quadword boundary. */ - stw r3,_FRAME_PARM_SAVE1(r1) - addi r3,r3,_UC_REG_SPACE+12 - stw r4,_FRAME_PARM_SAVE2(r1) /* new context pointer */ - clrrwi r3,r3,4 - -/* Save the general purpose registers */ - stw r0,_UC_GREGS+(PT_R0*4)(r3) - mflr r0 - stw r2,_UC_GREGS+(PT_R2*4)(r3) - stw r4,_UC_GREGS+(PT_R4*4)(r3) -/* Set the callers LR_SAVE, and the ucontext LR and NIP to the callers - return address. */ - stw r0,_UC_GREGS+(PT_LNK*4)(r3) - stw r0,_UC_GREGS+(PT_NIP*4)(r3) - stw r0,_FRAME_LR_SAVE+16(r1) - cfi_offset (lr, _FRAME_LR_SAVE) - stw r5,_UC_GREGS+(PT_R5*4)(r3) - stw r6,_UC_GREGS+(PT_R6*4)(r3) - stw r7,_UC_GREGS+(PT_R7*4)(r3) - stw r8,_UC_GREGS+(PT_R8*4)(r3) - stw r9,_UC_GREGS+(PT_R9*4)(r3) - stw r10,_UC_GREGS+(PT_R10*4)(r3) - stw r11,_UC_GREGS+(PT_R11*4)(r3) - stw r12,_UC_GREGS+(PT_R12*4)(r3) - stw r13,_UC_GREGS+(PT_R13*4)(r3) - stw r14,_UC_GREGS+(PT_R14*4)(r3) - stw r15,_UC_GREGS+(PT_R15*4)(r3) - stw r16,_UC_GREGS+(PT_R16*4)(r3) - stw r17,_UC_GREGS+(PT_R17*4)(r3) - stw r18,_UC_GREGS+(PT_R18*4)(r3) - stw r19,_UC_GREGS+(PT_R19*4)(r3) - stw r20,_UC_GREGS+(PT_R20*4)(r3) - stw r21,_UC_GREGS+(PT_R21*4)(r3) - stw r22,_UC_GREGS+(PT_R22*4)(r3) - stw r23,_UC_GREGS+(PT_R23*4)(r3) - stw r24,_UC_GREGS+(PT_R24*4)(r3) - stw r25,_UC_GREGS+(PT_R25*4)(r3) - stw r26,_UC_GREGS+(PT_R26*4)(r3) - stw r27,_UC_GREGS+(PT_R27*4)(r3) - stw r28,_UC_GREGS+(PT_R28*4)(r3) - stw r29,_UC_GREGS+(PT_R29*4)(r3) - stw r30,_UC_GREGS+(PT_R30*4)(r3) - stw r31,_UC_GREGS+(PT_R31*4)(r3) - -/* Save the value of R1. We had to push the stack before we - had the address of uc_reg_space. So compute the address of - the callers stack pointer and save it as R1. */ - addi r8,r1,16 - li r0,0 -/* Save the count, exception and condition registers. */ - mfctr r11 - mfxer r10 - mfcr r9 - stw r8,_UC_GREGS+(PT_R1*4)(r3) - stw r11,_UC_GREGS+(PT_CTR*4)(r3) - stw r10,_UC_GREGS+(PT_XER*4)(r3) - stw r9,_UC_GREGS+(PT_CCR*4)(r3) -/* Set the return value of getcontext to "success". R3 is the only - register whose value is not preserved in the saved context. */ - stw r0,_UC_GREGS+(PT_R3*4)(r3) - - /* Zero fill fields that can't be set in user state. */ - stw r0,_UC_GREGS+(PT_MSR*4)(r3) - stw r0,_UC_GREGS+(PT_MQ*4)(r3) - -#ifdef __CONTEXT_ENABLE_FPRS - /* Save the floating-point registers */ - stfd fp0,_UC_FREGS+(0*8)(r3) - stfd fp1,_UC_FREGS+(1*8)(r3) - stfd fp2,_UC_FREGS+(2*8)(r3) - stfd fp3,_UC_FREGS+(3*8)(r3) - stfd fp4,_UC_FREGS+(4*8)(r3) - stfd fp5,_UC_FREGS+(5*8)(r3) - stfd fp6,_UC_FREGS+(6*8)(r3) - stfd fp7,_UC_FREGS+(7*8)(r3) - stfd fp8,_UC_FREGS+(8*8)(r3) - stfd fp9,_UC_FREGS+(9*8)(r3) - stfd fp10,_UC_FREGS+(10*8)(r3) - stfd fp11,_UC_FREGS+(11*8)(r3) - stfd fp12,_UC_FREGS+(12*8)(r3) - stfd fp13,_UC_FREGS+(13*8)(r3) - stfd fp14,_UC_FREGS+(14*8)(r3) - stfd fp15,_UC_FREGS+(15*8)(r3) - stfd fp16,_UC_FREGS+(16*8)(r3) - stfd fp17,_UC_FREGS+(17*8)(r3) - stfd fp18,_UC_FREGS+(18*8)(r3) - stfd fp19,_UC_FREGS+(19*8)(r3) - stfd fp20,_UC_FREGS+(20*8)(r3) - stfd fp21,_UC_FREGS+(21*8)(r3) - stfd fp22,_UC_FREGS+(22*8)(r3) - stfd fp23,_UC_FREGS+(23*8)(r3) - stfd fp24,_UC_FREGS+(24*8)(r3) - stfd fp25,_UC_FREGS+(25*8)(r3) - stfd fp26,_UC_FREGS+(26*8)(r3) - stfd fp27,_UC_FREGS+(27*8)(r3) - stfd fp28,_UC_FREGS+(28*8)(r3) - stfd fp29,_UC_FREGS+(29*8)(r3) - mffs fp0 - stfd fp30,_UC_FREGS+(30*8)(r3) - stfd fp31,_UC_FREGS+(31*8)(r3) - stfd fp0,_UC_FREGS+(32*8)(r3) - -# ifdef __CONTEXT_ENABLE_VRS -# ifdef PIC - mflr r8 -# ifdef HAVE_ASM_PPC_REL16 - bcl 20,31,1f -1: mflr r7 - addis r7,r7,_GLOBAL_OFFSET_TABLE_-1b@ha - addi r7,r7,_GLOBAL_OFFSET_TABLE_-1b@l -# else - bl _GLOBAL_OFFSET_TABLE_@local-4 - mflr r7 -# endif -# ifdef SHARED - lwz r7,_rtld_global_ro@got(r7) - mtlr r8 - lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r7) -# else - lwz r7,_dl_hwcap@got(r7) - mtlr r8 - lwz r7,0(r7) -# endif -# else - lis r7,_dl_hwcap@ha - lwz r7,_dl_hwcap@l(r7) -# endif - andis. r7,r7,(PPC_FEATURE_HAS_ALTIVEC >> 16) - - la r10,(_UC_VREGS)(r3) - la r9,(_UC_VREGS+16)(r3) - -/* beq L(no_vec)*/ - beq 2f -/* address of the combined VSCR/VSAVE quadword. */ - la r8,(_UC_VREGS+512)(r3) - -/* Save the vector registers */ - stvx v0,0,r10 - stvx v1,0,r9 - addi r10,r10,32 - addi r9,r9,32 -/* We need to get the Vector Status and Control Register early to avoid - store order problems later with the VSAVE register that shares the - same quadword. */ - mfvscr v0 - - stvx v2,0,r10 - stvx v3,0,r9 - addi r10,r10,32 - addi r9,r9,32 - - stvx v0,0,r8 - - 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 - - mfvscr v0 - stvx v30,0,r10 - stvx v31,0,r9 - stw r0,0(r8) - -2: /*L(no_vec):*/ -# endif /* __CONTEXT_ENABLE_VRS */ -#endif /* __CONTEXT_ENABLE_FPRS */ - -/* Restore ucontext (parm1) from stack. */ - lwz r12,_FRAME_PARM_SAVE1(r1) - li r4,0 - stw r3,_UC_REGS_PTR(r12) - addi r5,r12,_UC_SIGMASK - li r3,SIG_SETMASK - bl __sigprocmask@local - cmpwi r3,0 - bne 3f /* L(error_exit) */ - - /* - * If the 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 - * r0, xer, ctr. We don't restore r2 since it will be used as - * the TLS pointer. - */ - lwz r4,_FRAME_PARM_SAVE2(r1) - lwz r31,_UC_REGS_PTR(r4) - lwz r0,_UC_GREGS+(PT_MSR*4)(r31) - cmpwi r0,0 - bne 4f /* L(do_sigret) */ - -#ifdef __CONTEXT_ENABLE_FPRS -# ifdef __CONTEXT_ENABLE_VRS - -# ifdef PIC - mflr r8 -# ifdef HAVE_ASM_PPC_REL16 - bcl 20,31,5f -5: mflr r7 - addis r7,r7,_GLOBAL_OFFSET_TABLE_-1b@ha - addi r7,r7,_GLOBAL_OFFSET_TABLE_-1b@l -# else - bl _GLOBAL_OFFSET_TABLE_@local-4 - mflr r7 -# endif - mtlr r8 -# ifdef SHARED - lwz r7,_rtld_global_ro@got(r7) - lwz r7,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r7) -# else - lwz r7,_dl_hwcap@got(r7) - lwz r7,0(r7) -# endif -# else - lis r7,_dl_hwcap@ha - lwz r7,_dl_hwcap@l(r7) -# endif - andis. r7,r7,(PPC_FEATURE_HAS_ALTIVEC >> 16) - la r10,(_UC_VREGS)(r31) - beq 6f /* L(has_no_vec) */ - - lwz r0,(32*16)(r10) - li r9,(32*16) - cmpwi r0,0 - mtspr VRSAVE,r0 - beq 6f /* L(has_no_vec) */ - - 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 - -6: /* L(has_no_vec): */ -# endif /* __CONTEXT_ENABLE_VRS */ - /* Restore the floating-point registers */ - lfd fp31,_UC_FREGS+(32*8)(r31) - lfd fp0,_UC_FREGS+(0*8)(r31) - mtfsf 0xff,fp31 - lfd fp1,_UC_FREGS+(1*8)(r31) - lfd fp2,_UC_FREGS+(2*8)(r31) - lfd fp3,_UC_FREGS+(3*8)(r31) - lfd fp4,_UC_FREGS+(4*8)(r31) - lfd fp5,_UC_FREGS+(5*8)(r31) - lfd fp6,_UC_FREGS+(6*8)(r31) - lfd fp7,_UC_FREGS+(7*8)(r31) - lfd fp8,_UC_FREGS+(8*8)(r31) - lfd fp9,_UC_FREGS+(9*8)(r31) - lfd fp10,_UC_FREGS+(10*8)(r31) - lfd fp11,_UC_FREGS+(11*8)(r31) - lfd fp12,_UC_FREGS+(12*8)(r31) - lfd fp13,_UC_FREGS+(13*8)(r31) - lfd fp14,_UC_FREGS+(14*8)(r31) - lfd fp15,_UC_FREGS+(15*8)(r31) - lfd fp16,_UC_FREGS+(16*8)(r31) - lfd fp17,_UC_FREGS+(17*8)(r31) - lfd fp18,_UC_FREGS+(18*8)(r31) - lfd fp19,_UC_FREGS+(19*8)(r31) - lfd fp20,_UC_FREGS+(20*8)(r31) - lfd fp21,_UC_FREGS+(21*8)(r31) - lfd fp22,_UC_FREGS+(22*8)(r31) - lfd fp23,_UC_FREGS+(23*8)(r31) - lfd fp24,_UC_FREGS+(24*8)(r31) - lfd fp25,_UC_FREGS+(25*8)(r31) - lfd fp26,_UC_FREGS+(26*8)(r31) - lfd fp27,_UC_FREGS+(27*8)(r31) - lfd fp28,_UC_FREGS+(28*8)(r31) - lfd fp29,_UC_FREGS+(29*8)(r31) - lfd fp30,_UC_FREGS+(30*8)(r31) - lfd fp31,_UC_FREGS+(31*8)(r31) -#endif /* __CONTEXT_ENABLE_FPRS */ - - /* Restore LR and CCR, and set CTR to the NIP value */ - lwz r3,_UC_GREGS+(PT_LNK*4)(r31) - lwz r4,_UC_GREGS+(PT_NIP*4)(r31) - lwz r5,_UC_GREGS+(PT_CCR*4)(r31) - mtlr r3 - mtctr r4 - mtcr r5 - - /* Restore the general registers */ - lwz r3,_UC_GREGS+(PT_R3*4)(r31) - lwz r4,_UC_GREGS+(PT_R4*4)(r31) - lwz r5,_UC_GREGS+(PT_R5*4)(r31) - lwz r6,_UC_GREGS+(PT_R6*4)(r31) - lwz r7,_UC_GREGS+(PT_R7*4)(r31) - lwz r8,_UC_GREGS+(PT_R8*4)(r31) - lwz r9,_UC_GREGS+(PT_R9*4)(r31) - lwz r10,_UC_GREGS+(PT_R10*4)(r31) - lwz r11,_UC_GREGS+(PT_R11*4)(r31) - lwz r12,_UC_GREGS+(PT_R12*4)(r31) - lwz r13,_UC_GREGS+(PT_R13*4)(r31) - lwz r14,_UC_GREGS+(PT_R14*4)(r31) - lwz r15,_UC_GREGS+(PT_R15*4)(r31) - lwz r16,_UC_GREGS+(PT_R16*4)(r31) - lwz r17,_UC_GREGS+(PT_R17*4)(r31) - lwz r18,_UC_GREGS+(PT_R18*4)(r31) - lwz r19,_UC_GREGS+(PT_R19*4)(r31) - lwz r20,_UC_GREGS+(PT_R20*4)(r31) - lwz r21,_UC_GREGS+(PT_R21*4)(r31) - lwz r22,_UC_GREGS+(PT_R22*4)(r31) - lwz r23,_UC_GREGS+(PT_R23*4)(r31) - lwz r24,_UC_GREGS+(PT_R24*4)(r31) - lwz r25,_UC_GREGS+(PT_R25*4)(r31) - lwz r26,_UC_GREGS+(PT_R26*4)(r31) - lwz r27,_UC_GREGS+(PT_R27*4)(r31) - lwz r28,_UC_GREGS+(PT_R28*4)(r31) - lwz r29,_UC_GREGS+(PT_R29*4)(r31) - lwz r30,_UC_GREGS+(PT_R30*4)(r31) - lwz r1,_UC_GREGS+(PT_R1*4)(r31) - lwz r31,_UC_GREGS+(PT_R31*4)(r31) - - bctr - -3:/*L(error_exit):*/ - lwz r0,_FRAME_LR_SAVE+16(r1) - addi r1,r1,16 - mtlr r0 - blr - -4:/*L(do_sigret):*/ - addi r1,r4,-0xd0 - li r0,SYS_ify(rt_sigreturn) - sc - /* NOTREACHED */ - -END(__CONTEXT_FUNC_NAME) - |