/* Jump to a new context.
- Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002-2014 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
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., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ 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>
+#include <kernel-features.h>
#define __ASSEMBLY__
#include <asm/ptrace.h>
#include "ucontext_i.h"
- .machine "altivec"
-ENTRY(__setcontext)
- 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 L(do_sigret)
-
- /* Restore the signal mask */
- li r5,0
- addi r4,r3,_UC_SIGMASK
- li r3,SIG_SETMASK
- bl JUMPTARGET(__sigprocmask)
- cmpwi r3,0
- bne L(error_exit)
-
-#ifdef PIC
- mflr r8
- bl _GLOBAL_OFFSET_TABLE_@local-4
- mflr r7
-# 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 v11,0,r9
- addi r19,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
+#define __CONTEXT_FUNC_NAME __setcontext
+#define __CONTEXT_ENABLE_FPRS 1
+#define __CONTEXT_ENABLE_VRS 1
+
+/* Size of ucontext in GLIBC_2.3.4 and later. */
+#define _UC_SIZE_2_3_4 1184
+
+ .section ".text";
+ENTRY (__setcontext)
+ mr r4,r3
+ li r3,0
+ li r5,_UC_SIZE_2_3_4;
+ DO_CALL (SYS_ify (swapcontext));
+ bso- cr0,1f
+/* the kernel does not set the return code for the success case */
+ li r3,0
blr
-
-L(do_sigret):
- addi r1,r3,-0xd0
- li r0,SYS_ify(rt_sigreturn)
- sc
- /* NOTREACHED */
-
-END (__setcontext)
+1:
+ b __syscall_error@local
+END(__setcontext)
versioned_symbol (libc, __setcontext, setcontext, GLIBC_2_3_4)
#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
compat_text_section
-ENTRY(__novec_setcontext)
- 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 L(novec_do_sigret)
-
- /* Restore the signal mask */
- li r5,0
- addi r4,r3,_UC_SIGMASK
- li r3,SIG_SETMASK
- bl JUMPTARGET(__sigprocmask)
- 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
+# undef __CONTEXT_FUNC_NAME
+# define __CONTEXT_FUNC_NAME __novec_setcontext
+# undef __CONTEXT_ENABLE_VRS
-L(novec_do_sigret):
- addi r1,r3,-0xd0
- li r0,SYS_ify(rt_sigreturn)
- sc
- /* NOTREACHED */
+# include "setcontext-common.S"
-END (__novec_setcontext)
.previous
compat_symbol (libc, __novec_setcontext, setcontext, GLIBC_2_3_3)
#endif
-#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3)
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_3)
-#define _ERRNO_H 1
-#include <bits/errno.h>
+# define _ERRNO_H 1
+# include <bits/errno.h>
compat_text_section
ENTRY (__setcontext_stub)
li r3,ENOSYS
- b JUMPTARGET(__syscall_error)
+ b __syscall_error@local
END (__setcontext_stub)
.previous
-compat_symbol (libc, __setcontext_stub, setcontext, GLIBC_2_1)
+compat_symbol (libc, __setcontext_stub, setcontext, GLIBC_2_0)
#endif
projects / thirdparty / glibc.git / blobdiff