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* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S:

Browse Source 
Move common function to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S:
	Move common function to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S:
	Move common function to...
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ucontext_i.sym
	(_FRAME_BACKCHAIN, _FRAME_LR_SAVE, _FRAME_PARM_SAVE1,
	_FRAME_PARM_SAVE2, _FRAME_PARM_SAVE3, _FRAME_PARM_SAVE4):
	Remove unrelated stack frame defines.
This commit is contained in:
Ulrich Drepper
2005-12-29 21:10:34 +00:00
parent 099cf5dba2
commit c50ce9a464
8 changed files with 1198 additions and 1394 deletions
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19
ChangeLog
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@ -1,3 +1,22 @@
2005-12-26 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S:
Move common function to...
* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S:
New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S:
Move common function to...
* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S:
New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S:
Move common function to...
* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S:
New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/ucontext_i.sym
(_FRAME_BACKCHAIN, _FRAME_LR_SAVE, _FRAME_PARM_SAVE1,
_FRAME_PARM_SAVE2, _FRAME_PARM_SAVE3, _FRAME_PARM_SAVE4):
Remove unrelated stack frame defines.
2005-12-29 Ulrich Drepper <drepper@redhat.com> 2005-12-29 Ulrich Drepper <drepper@redhat.com>
* stdio-common/tstdiomisc.c [FLT_EVAL_METHOD!=2] (dbl_max): * stdio-common/tstdiomisc.c [FLT_EVAL_METHOD!=2] (dbl_max):

284
sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S Normal file
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@ -0,0 +1,284 @@
/* Save current context, powerpc32 common.
Copyright (C) 2005 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 getcontext 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)
/* Insure that the _UC_REGS start on a quadword boundary. */
stw r3,_FRAME_PARM_SAVE1(r1)
addi r3,r3,_UC_REG_SPACE+12
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)
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 2f /* L(no_vec) */
/* 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
mfspr r0,VRSAVE
stvx v30,0,r10
stvx v31,0,r9
stw r0,0(r8)
2: /* L(no_vec): */
# endif
#endif
/* We need to set up parms and call sigprocmask which will clobber
volatile registers. So before the call we need to retrieve the
original ucontext ptr (parm1) from stack and store the UC_REGS_PTR
(current R3). */
lwz r12,_FRAME_PARM_SAVE1(r1)
li r4,0
stw r3,_UC_REGS_PTR(r12)
addi r5,r12,_UC_SIGMASK
li r3,SIG_BLOCK
bl __sigprocmask@local
lwz r0,_FRAME_LR_SAVE+16(r1)
addi r1,r1,16
mtlr r0
blr
END(__CONTEXT_FUNC_NAME)

374
sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S
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@ -1,5 +1,5 @@
/* Save current context. /* Save current context.
Copyright (C) 2002, 2004 Free Software Foundation, Inc. Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or The GNU C Library is free software; you can redistribute it and/or
@ -14,369 +14,53 @@
You should have received a copy of the GNU Lesser General Public 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 License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
02111-1307 USA. */ 02110-1301 USA. */
#include <sysdep.h> #include <sysdep.h>
#include <rtld-global-offsets.h> #include <rtld-global-offsets.h>
#include <shlib-compat.h> #include <shlib-compat.h>
#include <kernel-features.h>
#define __ASSEMBLY__ #define __ASSEMBLY__
#include <asm/ptrace.h> #include <asm/ptrace.h>
#include "ucontext_i.h" #include "ucontext_i.h"
.machine "altivec" #define __CONTEXT_FUNC_NAME __getcontext
ENTRY(__getcontext) #define __CONTEXT_ENABLE_FPRS 1
stwu r1,-16(r1) #define __CONTEXT_ENABLE_VRS 1
/* Insure that the _UC_REGS start on a quadword boundary. */
stw r3,_FRAME_PARM_SAVE1(r1)
addi r3,r3,_UC_REG_SPACE+12
clrrwi r3,r3,4
/* Save the general purpose registers */ /* Size of ucontext in GLIBC_2.3.4 and later. */
stw r0,_UC_GREGS+(PT_R0*4)(r3) #define _UC_SIZE_2_3_4 1184
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)
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. */ #ifdef __ASSUME_SWAPCONTEXT_SYSCALL
stw r0,_UC_GREGS+(PT_MSR*4)(r3) .section ".text";
stw r0,_UC_GREGS+(PT_MQ*4)(r3) ENTRY (__getcontext)
/* 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 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)
/* 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
mfspr r0,VRSAVE
stvx v30,0,r10
stvx v31,0,r9
stw r0,0(r8)
L(no_vec):
/* We need to set up parms and call sigprocmask which will clobber
volatile registers. So before the call we need to retrieve the
original ucontext ptr (parm1) from stack and store the UC_REGS_PTR
(current R3). */
lwz r12,_FRAME_PARM_SAVE1(r1)
li r4,0 li r4,0
stw r3,_UC_REGS_PTR(r12) li r5,_UC_SIZE_2_3_4;
addi r5,r12,_UC_SIGMASK DO_CALL (SYS_ify (swapcontext));
li r3,SIG_BLOCK bso- cr0,1f
bl __sigprocmask@local /* the kernel does not set the return code for the success case */
li r3,0
lwz r0,_FRAME_LR_SAVE+16(r1)
addi r1,r1,16
mtlr r0
blr blr
1:
b __syscall_error@local
END(__getcontext) END(__getcontext)
#else
# include "getcontext-common.S"
#endif
versioned_symbol (libc, __getcontext, getcontext, GLIBC_2_3_4) versioned_symbol (libc, __getcontext, getcontext, GLIBC_2_3_4)
#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) #if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
compat_text_section compat_text_section
ENTRY(__novec_getcontext)
/* # undef __CONTEXT_FUNC_NAME
* Since we are not attempting to save the altivec registers, # define __CONTEXT_FUNC_NAME __novec_getcontext
* there is no need to get the register storage space # undef __CONTEXT_ENABLE_VRS
* aligned on a 16-byte boundary.
*/
addi r3,r3,_UC_REG_SPACE
stw r3,_UC_REGS_PTR - _UC_REG_SPACE(r3)
stw r0,_UC_GREGS+(PT_R0*4)(r3)
stw r1,_UC_GREGS+(PT_R1*4)(r3)
mflr r0
stwu r1,-16(r1)
stw r0,20(r1)
stw r0,_UC_GREGS+(PT_LNK*4)(r3)
stw r0,_UC_GREGS+(PT_NIP*4)(r3)
stw r2,_UC_GREGS+(PT_R2*4)(r3)
stw r4,_UC_GREGS+(PT_R4*4)(r3)
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)
mfctr r0
stw r0,_UC_GREGS+(PT_CTR*4)(r3)
mfxer r0
stw r0,_UC_GREGS+(PT_XER*4)(r3)
mfcr r0
stw r0,_UC_GREGS+(PT_CCR*4)(r3)
/* Set the return value of getcontext to "success". R3 is the only # clude "getcontext-common.S"
register whose value is not preserved in the saved context. */
li r0,0
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)
/* 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)
addi r5,r3,_UC_SIGMASK - _UC_REG_SPACE
li r4,0
li r3,SIG_BLOCK
bl __sigprocmask@local
lwz r0,20(r1)
addi r1,r1,16
mtlr r0
blr
END(__novec_getcontext)
.previous .previous
compat_symbol (libc, __novec_getcontext, getcontext, GLIBC_2_3_3) compat_symbol (libc, __novec_getcontext, getcontext, GLIBC_2_3_3)
@ -385,8 +69,8 @@ compat_symbol (libc, __novec_getcontext, getcontext, GLIBC_2_3_3)
#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3) #if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3)
#define _ERRNO_H 1 # define _ERRNO_H 1
#include <bits/errno.h> # include <bits/errno.h>
compat_text_section compat_text_section
ENTRY (__getcontext_stub) ENTRY (__getcontext_stub)

290
sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S Normal file
View File

@ -0,0 +1,290 @@
/* Jump to a new context powerpc32 common.
Copyright (C) 2005 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)
mflr r0
stwu r1,-16(r1)
stw r0,20(r1)
stw r31,12(r1)
lwz r31,_UC_REGS_PTR(r3)
/*
* If this 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 r0,_UC_GREGS+(PT_MSR*4)(r31)
cmpwi r0,0
bne 4f /* L(do_sigret) */
/* Restore the signal mask */
li r5,0
addi r4,r3,_UC_SIGMASK
li r3,SIG_SETMASK
bl __sigprocmask@local
cmpwi r3,0
bne 3f /* L(error_exit) */
#ifdef __CONTEXT_ENABLE_FPRS
# 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)(r31)
beq 2f /* L(has_no_vec) */
lwz r0,(32*16)(r10)
li r9,(32*16)
cmpwi r0,0
mtspr VRSAVE,r0
beq 2f /* 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
2: /* 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 r1,_UC_GREGS+(PT_R1*4)(r31)
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 r31,_UC_GREGS+(PT_R31*4)(r31)
bctr
3: /* L(error_exit): */
lwz r31,12(r1)
lwz r0,20(r1)
addi r1,r1,16
mtlr r0
blr
4: /* L(do_sigret): */
addi r1,r3,-0xd0
li r0,SYS_ify(rt_sigreturn)
sc
/* NOTREACHED */
END (__CONTEXT_FUNC_NAME)

398
sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S
View File

@ -1,5 +1,5 @@
/* Jump to a new context. /* Jump to a new context.
Copyright (C) 2002, 2004 Free Software Foundation, Inc. Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or The GNU C Library is free software; you can redistribute it and/or
@ -14,8 +14,8 @@
You should have received a copy of the GNU Lesser General Public 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 License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
02111-1307 USA. */ 02110-1301 USA. */
#include <sysdep.h> #include <sysdep.h>
#include <rtld-global-offsets.h> #include <rtld-global-offsets.h>
@ -25,379 +25,43 @@
#include <asm/ptrace.h> #include <asm/ptrace.h>
#include "ucontext_i.h" #include "ucontext_i.h"
.machine "altivec" #define __CONTEXT_FUNC_NAME __setcontext
ENTRY(__setcontext) #define __CONTEXT_ENABLE_FPRS 1
mflr r0 #define __CONTEXT_ENABLE_VRS 1
stwu r1,-16(r1)
stw r0,20(r1)
stw r31,12(r1)
lwz r31,_UC_REGS_PTR(r3)
/* /* Size of ucontext in GLIBC_2.3.4 and later. */
* If this ucontext refers to the point where we were interrupted #define _UC_SIZE_2_3_4 1184
* 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 r0,_UC_GREGS+(PT_MSR*4)(r31)
cmpwi r0,0
bne L(do_sigret)
/* Restore the signal mask */ #ifdef __ASSUME_SWAPCONTEXT_SYSCALL
li r5,0 .section ".text";
addi r4,r3,_UC_SIGMASK ENTRY (__setcontext)
li r3,SIG_SETMASK mr r4,r3
bl __sigprocmask@local li r3,0
cmpwi r3,0 li r5,_UC_SIZE_2_3_4;
bne L(error_exit) DO_CALL (SYS_ify (swapcontext));
bso- cr0,1f
#ifdef PIC /* the kernel does not set the return code for the success case */
mflr r8 li r3,0
# 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)(r31)
beq L(has_no_vec)
lwz r0,(32*16)(r10)
li r9,(32*16)
cmpwi r0,0
mtspr VRSAVE,r0
beq 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
L(has_no_vec):
/* 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)
/* 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 r1,_UC_GREGS+(PT_R1*4)(r31)
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 r31,_UC_GREGS+(PT_R31*4)(r31)
bctr
L(error_exit):
lwz r31,12(r1)
lwz r0,20(r1)
addi r1,r1,16
mtlr r0
blr blr
1:
L(do_sigret): b __syscall_error@local
addi r1,r3,-0xd0 END(__setcontext)
li r0,SYS_ify(rt_sigreturn) #else
sc # include "setcontext-common.S"
/* NOTREACHED */ #endif
END (__setcontext)
versioned_symbol (libc, __setcontext, setcontext, GLIBC_2_3_4) versioned_symbol (libc, __setcontext, setcontext, GLIBC_2_3_4)
#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) #if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
compat_text_section compat_text_section
ENTRY(__novec_setcontext)
mflr r0 # undef __CONTEXT_FUNC_NAME
stwu r1,-16(r1) # define __CONTEXT_FUNC_NAME __novec_setcontext
stw r0,20(r1) # undef __CONTEXT_ENABLE_VRS
stw r31,12(r1)
lwz r31,_UC_REGS_PTR(r3)
/* # include "setcontext-common.S"
* If this 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 r0,_UC_GREGS+(PT_MSR*4)(r31)
cmpwi r0,0
bne L(novec_do_sigret)
/* Restore the signal mask */
li r5,0
addi r4,r3,_UC_SIGMASK
li r3,SIG_SETMASK
bl __sigprocmask@local
cmpwi r3,0
bne L(novec_error_exit)
/* 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)
/* 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 r1,_UC_GREGS+(PT_R1*4)(r31)
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 r31,_UC_GREGS+(PT_R31*4)(r31)
bctr
L(novec_error_exit):
lwz r31,12(r1)
lwz r0,20(r1)
addi r1,r1,16
mtlr r0
blr
L(novec_do_sigret):
addi r1,r3,-0xd0
li r0,SYS_ify(rt_sigreturn)
sc
/* NOTREACHED */
END (__novec_setcontext)
.previous .previous
compat_symbol (libc, __novec_setcontext, setcontext, GLIBC_2_3_3) compat_symbol (libc, __novec_setcontext, setcontext, GLIBC_2_3_3)
@ -406,8 +70,8 @@ compat_symbol (libc, __novec_setcontext, setcontext, GLIBC_2_3_3)
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_3) #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_3)
#define _ERRNO_H 1 # define _ERRNO_H 1
#include <bits/errno.h> # include <bits/errno.h>
compat_text_section compat_text_section
ENTRY (__setcontext_stub) ENTRY (__setcontext_stub)

516
sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S Normal file
View File

@ -0,0 +1,516 @@
/* Save current context and jump to a new context.
Copyright (C) 2005 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)
/* 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)
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
# 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)(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 r1,_UC_GREGS+(PT_R1*4)(r31)
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 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)

703
sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S
View File

@ -1,5 +1,5 @@
/* Save current context and jump to a new context. /* Save current context and jump to a new context.
Copyright (C) 2002, 2004 Free Software Foundation, Inc. Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or The GNU C Library is free software; you can redistribute it and/or
@ -14,698 +14,53 @@
You should have received a copy of the GNU Lesser General Public 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 License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
02111-1307 USA. */ 02110-1301 USA. */
#include <sysdep.h> #include <sysdep.h>
#include <rtld-global-offsets.h> #include <rtld-global-offsets.h>
#include <shlib-compat.h> #include <shlib-compat.h>
#include <kernel-features.h>
#define __ASSEMBLY__ #define __ASSEMBLY__
#include <asm/ptrace.h> #include <asm/ptrace.h>
#include "ucontext_i.h" #include "ucontext_i.h"
.machine "altivec" #define __CONTEXT_FUNC_NAME __swapcontext
ENTRY(__swapcontext) #define __CONTEXT_ENABLE_FPRS 1
stwu r1,-16(r1) #define __CONTEXT_ENABLE_VRS 1
/* 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 */ /* Size of ucontext in GLIBC_2.3.4 and later. */
stw r0,_UC_GREGS+(PT_R0*4)(r3) #define _UC_SIZE_2_3_4 1184
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)
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. */ #ifdef __ASSUME_SWAPCONTEXT_SYSCALL
stw r0,_UC_GREGS+(PT_MSR*4)(r3) .section ".text";
stw r0,_UC_GREGS+(PT_MQ*4)(r3) ENTRY (__swapcontext)
li r5,_UC_SIZE_2_3_4;
/* Save the floating-point registers */ DO_CALL (SYS_ify (swapcontext));
stfd fp0,_UC_FREGS+(0*8)(r3) bso- cr0,1f
stfd fp1,_UC_FREGS+(1*8)(r3) /* the kernel does not set the return code for the success case */
stfd fp2,_UC_FREGS+(2*8)(r3) li r3,0
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 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)
/* 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)
L(no_vec):
/* 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 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 L(do_sigret)
#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)(r31)
beq L(has_no_vec)
lwz r0,(32*16)(r10)
li r9,(32*16)
cmpwi r0,0
mtspr VRSAVE,r0
beq 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
L(has_no_vec):
/* 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)
/* 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 r1,_UC_GREGS+(PT_R1*4)(r31)
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 r31,_UC_GREGS+(PT_R31*4)(r31)
bctr
L(error_exit):
lwz r0,_FRAME_LR_SAVE+16(r1)
addi r1,r1,16
mtlr r0
blr blr
1:
L(do_sigret): b __syscall_error@local
addi r1,r4,-0xd0
li r0,SYS_ify(rt_sigreturn)
sc
/* NOTREACHED */
END(__swapcontext) END(__swapcontext)
#else
# include "swapcontext-common.S"
#endif
versioned_symbol (libc, __swapcontext, swapcontext, GLIBC_2_3_4) versioned_symbol (libc, __swapcontext, swapcontext, GLIBC_2_3_4)
#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) #if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
compat_text_section compat_text_section
ENTRY(__novec_swapcontext)
/* Save the current context */ # undef __CONTEXT_FUNC_NAME
addi r3,r3,_UC_REG_SPACE # define __CONTEXT_FUNC_NAME __novec_swapcontext
stw r3,_UC_REGS_PTR - _UC_REG_SPACE(r3) # undef __CONTEXT_ENABLE_VRS
stw r0,_UC_GREGS+(PT_R0*4)(r3)
stw r1,_UC_GREGS+(PT_R1*4)(r3)
mflr r0
stwu r1,-16(r1)
stw r0,20(r1)
stw r31,12(r1)
stw r31,_UC_GREGS+(PT_R31*4)(r3)
mr r31,r4 /* new context pointer */
stw r0,_UC_GREGS+(PT_LNK*4)(r3)
stw r0,_UC_GREGS+(PT_NIP*4)(r3)
stw r2,_UC_GREGS+(PT_R2*4)(r3)
stw r4,_UC_GREGS+(PT_R4*4)(r3)
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)
mfctr r0
stw r0,_UC_GREGS+(PT_CTR*4)(r3)
mfxer r0
stw r0,_UC_GREGS+(PT_XER*4)(r3)
mfcr r0
stw r0,_UC_GREGS+(PT_CCR*4)(r3)
/* Set the return value of swapcontext to "success". R3 is the only # include "swapcontext-common.S"
register whose value is not preserved in the saved context. */
li r0,0
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)
/* 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)
addi r5,r3,_UC_SIGMASK - _UC_REG_SPACE
addi r4,r4,_UC_SIGMASK
li r3,SIG_SETMASK
bl __sigprocmask@local
cmpwi r3,0
bne L(novec_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.
*/
mr r4,r31
lwz r31,_UC_REGS_PTR(r31)
lwz r0,_UC_GREGS+(PT_MSR*4)(r31)
cmpwi r0,0
bne L(novec_do_sigret)
/* 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)
/* 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 r1,_UC_GREGS+(PT_R1*4)(r31)
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 r31,_UC_GREGS+(PT_R31*4)(r31)
bctr
L(novec_error_exit):
lwz r31,12(r1)
lwz r0,20(r1)
addi r1,r1,16
mtlr r0
blr
L(novec_do_sigret):
addi r1,r4,-0xd0
li r0,SYS_ify(rt_sigreturn)
sc
/* NOTREACHED */
END(__novec_swapcontext)
.previous .previous
compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3_3) compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3_3)
@ -714,8 +69,8 @@ compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3_3)
#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3) #if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3)
#define _ERRNO_H 1 # define _ERRNO_H 1
#include <bits/errno.h> # include <bits/errno.h>
compat_text_section compat_text_section
ENTRY (__swapcontext_stub) ENTRY (__swapcontext_stub)

8
sysdeps/unix/sysv/linux/powerpc/powerpc32/ucontext_i.sym
View File

@ -7,14 +7,6 @@
SIG_BLOCK SIG_BLOCK
SIG_SETMASK SIG_SETMASK
-- XXX Do these correspond to some struct?
_FRAME_BACKCHAIN 0
_FRAME_LR_SAVE 4
_FRAME_PARM_SAVE1 8
_FRAME_PARM_SAVE2 12
_FRAME_PARM_SAVE3 16
_FRAME_PARM_SAVE4 20
-- Offsets in ucontext_t. -- Offsets in ucontext_t.
#define ucontext(member) offsetof (ucontext_t, member) #define ucontext(member) offsetof (ucontext_t, member)
_UC_LINK ucontext (uc_link) _UC_LINK ucontext (uc_link)