+2003-01-16 Steven Munroe <sjmunroe@us.ibm.com>
+
+ * sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: New file.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: New file.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S: New file.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: New file.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc64/ucontext_i.h: New file.
+ * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: New file.
+ * sysdeps/unix/sysv/linux/configure.in: Minimum kernel for PPC64
+ is 2.4.21.
+
+2003-01-16 Ulrich Drepper <drepper@redhat.com>
+
+ * sysdeps/generic/glob.c (glob): Assume sysconf() always returns
+ values != -1 for _LIBC. Use extend_alloca to reallocate alloca'ed
+ buffers.
+
+ * sysdeps/generic/sysconf.c: Unconditionally implement
+ _SC_GETPW_R_SIZE_MAX and _SC_GETGR_R_SIZE_MAX.
+ * sysdeps/posix/sysconf.c: Likewise.
+
2003-01-16 Jakub Jelinek <jakub@redhat.com>
* posix/regcomp.c (parse_bracket_exp): If build_charclass fails,
-/* Copyright (C) 1991-1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2002, 2003 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
#endif
#ifdef _LIBC
+# include <alloca.h>
# undef strdup
# define strdup(str) __strdup (str)
# define sysconf(id) __sysconf (id)
struct passwd pwbuf;
int save = errno;
+# ifndef _LIBC
if (pwbuflen == -1)
/* `sysconf' does not support _SC_GETPW_R_SIZE_MAX.
Try a moderate value. */
pwbuflen = 1024;
+# endif
pwtmpbuf = (char *) __alloca (pwbuflen);
while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
p = NULL;
break;
}
+# ifdef _LIBC
+ pwtmpbuf = extend_alloca (pwtmpbuf, pwbuflen,
+ 2 * pwbuflen);
+# else
pwbuflen *= 2;
pwtmpbuf = (char *) __alloca (pwbuflen);
+# endif
__set_errno (save);
}
# else
struct passwd pwbuf;
int save = errno;
+# ifndef _LIBC
if (buflen == -1)
/* `sysconf' does not support _SC_GETPW_R_SIZE_MAX. Try a
moderate value. */
buflen = 1024;
+# endif
pwtmpbuf = (char *) __alloca (buflen);
while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
p = NULL;
break;
}
+# ifdef _LIBC
+ pwtmpbuf = extend_alloca (pwtmpbuf, buflen, 2 * buflen);
+# else
buflen *= 2;
pwtmpbuf = __alloca (buflen);
+# endif
__set_errno (save);
}
# else
int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
| ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
#if defined _AMIGA || defined VMS
- | FNM_CASEFOLD
+ | FNM_CASEFOLD
#endif
- );
+ );
nfound = 0;
flags |= GLOB_MAGCHAR;
-/* Copyright (C) 1991,1993,1995-1997,2001,2002 Free Software Foundation, Inc.
+/* Copyright (C) 1991,1993,1995-1997,2001,2002,2003
+ 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
case _SC_USHRT_MAX:
return USHRT_MAX;
+ case _SC_GETGR_R_SIZE_MAX:
+ return NSS_BUFLEN_GROUP;
+
+ case _SC_GETPW_R_SIZE_MAX:
+ return NSS_BUFLEN_PASSWD;
+
case _SC_ARG_MAX:
case _SC_CHILD_MAX:
case _SC_CLK_TCK:
case _SC_THREADS:
case _SC_THREAD_SAFE_FUNCTIONS:
- case _SC_GETGR_R_SIZE_MAX:
- case _SC_GETPW_R_SIZE_MAX:
case _SC_LOGIN_NAME_MAX:
case _SC_TTY_NAME_MAX:
case _SC_THREAD_DESTRUCTOR_ITERATIONS:
-/* Copyright (C) 1991,93,1995-1997,1999-2002 Free Software Foundation, Inc.
+/* Copyright (C) 1991,93,1995-1997,1999-2003 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
#endif
case _SC_GETGR_R_SIZE_MAX:
-#ifdef NSS_BUFLEN_GROUP
return NSS_BUFLEN_GROUP;
-#else
- return -1;
-#endif
case _SC_GETPW_R_SIZE_MAX:
-#ifdef NSS_BUFLEN_PASSWD
return NSS_BUFLEN_PASSWD;
-#else
- return -1;
-#endif
case _SC_LOGIN_NAME_MAX:
#ifdef _POSIX_LOGIN_NAME_MAX
arch_minimum_kernel=2.4.0
;;
hppa*)
- libc_cv_gcc_unwind_find_fde=yes
+ libc_cv_gcc_unwind_find_fde=yes
arch_minimum_kernel=2.4.19
;;
m68k*)
arch_minimum_kernel=2.0.10
;;
powerpc/powerpc64)
- arch_minimum_kernel=2.4.19
+ arch_minimum_kernel=2.4.21
;;
s390/s390-32)
libc_cv_gcc_unwind_find_fde=yes
--- /dev/null
+/* Save current context.
+ Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+
+#define __ASSEMBLY__
+#include <asm/ptrace.h>
+#include "ucontext_i.h"
+
+ENTRY(__getcontext)
+ std r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3)
+ std r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3)
+ mflr r0
+ std r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r3)
+ std r0,FRAME_LR_SAVE(r1)
+ std r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r3)
+ std r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r3)
+ stdu r1,-128(r1)
+ std r4,(SIGCONTEXT_GP_REGS+(PT_R4*8))(r3)
+ std r5,(SIGCONTEXT_GP_REGS+(PT_R5*8))(r3)
+ std r6,(SIGCONTEXT_GP_REGS+(PT_R6*8))(r3)
+ std r7,(SIGCONTEXT_GP_REGS+(PT_R7*8))(r3)
+ std r8,(SIGCONTEXT_GP_REGS+(PT_R8*8))(r3)
+ std r9,(SIGCONTEXT_GP_REGS+(PT_R9*8))(r3)
+ std r10,(SIGCONTEXT_GP_REGS+(PT_R10*8))(r3)
+ std r11,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r3)
+ std r12,(SIGCONTEXT_GP_REGS+(PT_R12*8))(r3)
+ std r13,(SIGCONTEXT_GP_REGS+(PT_R13*8))(r3)
+ std r14,(SIGCONTEXT_GP_REGS+(PT_R14*8))(r3)
+ std r15,(SIGCONTEXT_GP_REGS+(PT_R15*8))(r3)
+ std r16,(SIGCONTEXT_GP_REGS+(PT_R16*8))(r3)
+ std r17,(SIGCONTEXT_GP_REGS+(PT_R17*8))(r3)
+ std r18,(SIGCONTEXT_GP_REGS+(PT_R18*8))(r3)
+ std r19,(SIGCONTEXT_GP_REGS+(PT_R19*8))(r3)
+ std r20,(SIGCONTEXT_GP_REGS+(PT_R20*8))(r3)
+ std r21,(SIGCONTEXT_GP_REGS+(PT_R21*8))(r3)
+ std r22,(SIGCONTEXT_GP_REGS+(PT_R22*8))(r3)
+ std r23,(SIGCONTEXT_GP_REGS+(PT_R23*8))(r3)
+ std r24,(SIGCONTEXT_GP_REGS+(PT_R24*8))(r3)
+ std r25,(SIGCONTEXT_GP_REGS+(PT_R25*8))(r3)
+ std r26,(SIGCONTEXT_GP_REGS+(PT_R26*8))(r3)
+ std r27,(SIGCONTEXT_GP_REGS+(PT_R27*8))(r3)
+ std r28,(SIGCONTEXT_GP_REGS+(PT_R28*8))(r3)
+ std r29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3)
+ std r30,(SIGCONTEXT_GP_REGS+(PT_R30*8))(r3)
+ std r31,(SIGCONTEXT_GP_REGS+(PT_R31*8))(r3)
+ mfctr r0
+ std r0,(SIGCONTEXT_GP_REGS+(PT_CTR*8))(r3)
+ mfxer r0
+ std r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r3)
+ mfcr r0
+ std r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r3)
+
+ /* Set the return value of swapcontext to "success". R3 is the only
+ register whose value is not preserved in the saved context. */
+ li r0,0
+ std r0,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r3)
+
+ /* Zero fill fields that can't be set in user state or are unused. */
+ std r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r3)
+ std r0,(SIGCONTEXT_GP_REGS+(34*8))(r3)
+ std r0,(SIGCONTEXT_GP_REGS+(PT_SOFTE*8))(r3)
+ std r0,(SIGCONTEXT_GP_REGS+(40*8))(r3)
+ std r0,(SIGCONTEXT_GP_REGS+(41*8))(r3)
+ std r0,(SIGCONTEXT_GP_REGS+(42*8))(r3)
+ std r0,(SIGCONTEXT_GP_REGS+(PT_RESULT*8))(r3)
+
+ /* Set the PT_REGS pointer to the address of sigcontext's gp_regs
+ field. Struct pt_regs and elf_gregset_t are the same thing.
+ We kept the regs field for backwards compatibility with
+ libraries built before we extended sigcontext. */
+ addi r0,r3,SIGCONTEXT_GP_REGS
+ std r0,SIGCONTEXT_PT_REGS(r3)
+
+ stfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r3)
+ stfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r3)
+ stfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r3)
+ stfd fp3,(SIGCONTEXT_FP_REGS+(PT_R3*8))(r3)
+ stfd fp4,(SIGCONTEXT_FP_REGS+(PT_R4*8))(r3)
+ stfd fp5,(SIGCONTEXT_FP_REGS+(PT_R5*8))(r3)
+ stfd fp6,(SIGCONTEXT_FP_REGS+(PT_R6*8))(r3)
+ stfd fp7,(SIGCONTEXT_FP_REGS+(PT_R7*8))(r3)
+ stfd fp8,(SIGCONTEXT_FP_REGS+(PT_R8*8))(r3)
+ stfd fp9,(SIGCONTEXT_FP_REGS+(PT_R9*8))(r3)
+ stfd fp10,(SIGCONTEXT_FP_REGS+(PT_R10*8))(r3)
+ stfd fp11,(SIGCONTEXT_FP_REGS+(PT_R11*8))(r3)
+ stfd fp12,(SIGCONTEXT_FP_REGS+(PT_R12*8))(r3)
+ stfd fp13,(SIGCONTEXT_FP_REGS+(PT_R13*8))(r3)
+ stfd fp14,(SIGCONTEXT_FP_REGS+(PT_R14*8))(r3)
+ stfd fp15,(SIGCONTEXT_FP_REGS+(PT_R15*8))(r3)
+ stfd fp16,(SIGCONTEXT_FP_REGS+(PT_R16*8))(r3)
+ stfd fp17,(SIGCONTEXT_FP_REGS+(PT_R17*8))(r3)
+ stfd fp18,(SIGCONTEXT_FP_REGS+(PT_R18*8))(r3)
+ stfd fp19,(SIGCONTEXT_FP_REGS+(PT_R19*8))(r3)
+ stfd fp20,(SIGCONTEXT_FP_REGS+(PT_R20*8))(r3)
+ stfd fp21,(SIGCONTEXT_FP_REGS+(PT_R21*8))(r3)
+ stfd fp22,(SIGCONTEXT_FP_REGS+(PT_R22*8))(r3)
+ stfd fp23,(SIGCONTEXT_FP_REGS+(PT_R23*8))(r3)
+ stfd fp24,(SIGCONTEXT_FP_REGS+(PT_R24*8))(r3)
+ stfd fp25,(SIGCONTEXT_FP_REGS+(PT_R25*8))(r3)
+ stfd fp26,(SIGCONTEXT_FP_REGS+(PT_R26*8))(r3)
+ stfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r3)
+ stfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r3)
+ stfd fp29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3)
+ mffs fp0
+ stfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r3)
+ stfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r3)
+ stfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r3)
+
+ addi r5,r3,UCONTEXT_SIGMASK
+ li r4,0
+ li r3,SIG_BLOCK
+ bl .sigprocmask
+ nop
+
+ ld r0,128+FRAME_LR_SAVE(r1)
+ addi r1,r1,128
+ mtlr r0
+ blr
+PSEUDO_END(__getcontext)
+
+weak_alias(__getcontext, getcontext)
--- /dev/null
+/* Create new context.
+ Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+
+#define __ASSEMBLY__
+#include <asm/ptrace.h>
+#include "ucontext_i.h"
+
+ENTRY(__makecontext)
+ /* Save parameters into the parameter save area of callers frame. */
+ std r3,FRAME_PARM1_SAVE(r1) /* ucontext_t *ucp */
+ std r4,FRAME_PARM2_SAVE(r1) /* void (*func)(void) */
+ std r5,FRAME_PARM3_SAVE(r1) /* int argc */
+ std r6,FRAME_PARM4_SAVE(r1) /* ... */
+ std r7,FRAME_PARM5_SAVE(r1)
+ std r8,FRAME_PARM6_SAVE(r1)
+ std r9,FRAME_PARM7_SAVE(r1)
+ std r10,FRAME_PARM8_SAVE(r1)
+ mflr r0
+ /* Get the address of the target functions first parameter. */
+ addi r6,r1,FRAME_PARM4_SAVE
+ std r0,FRAME_LR_SAVE(r1)
+ stdu r1,-128(r1)
+
+ /* Get the ucontexts stack pointer and size. Compute the top of stack
+ and round down to a quadword boundary. Then stack a dummy frame
+ with a null back chain. We store the context pointer in the frames
+ "compiler double word" field so we can recover if is the function
+ returns. Finally save the callers link register and TOC pointer
+ into this frame so the debugger can display a backtrace.
+ */
+ ld r7,UCONTEXT_STACK_SP(r3)
+ ld r0,UCONTEXT_STACK_SIZE(r3)
+ add r7,r7,r0
+ clrrdi r7,r7,4
+ li r0,0
+ stdu r0,-48(r7)
+ std r3,24(r7)
+ mflr r0
+ std r2,FRAME_TOC_SAVE(r7) /* Store the TOC pointer for later. */
+ std r0,FRAME_LR_SAVE(r7)
+
+ /* Now we need to stack another frame to hold the parameter save area
+ for the function. We need to allocate a frame with the minimum 48
+ byte header and 8 parameter register. However if there are more
+ than 8 parameters addition space is need to hold all the parameters.
+ The total size it rounded up to a quadword multiple then a frame is
+ stacked. This address is stored in the ucontext as GPR 1. */
+
+ cmpdi cr1,r5,8
+ sldi r8,r5,3
+ bgt cr1,L(gt8)
+ li r8,64
+L(gt8):
+ addi r8,r8,FRAME_PARM_SAVE+8 /* Add header plus rounding factor. */
+ clrrdi r8,r8,4 /* Round down to quadword. */
+
+ subf r8,r8,r7
+ std r7,0(r8) /* Stack the frame. */
+ std r8,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3)
+
+ /* Now we need to copy the target functions parameters. The functions
+ parameters are saved in the parameter save area. We skip over the
+ first three parameters and copy up to 8 double word into the
+ SIGCONTEXT_GP_REGS starting with R3. If there are more than 8
+ parameters then doublewords 8-N are copied into the parameter
+ save area of the context frame. */
+ cmpdi r5,0
+ beq L(noparms)
+ mr r0,r5
+ ble cr1,L(le8)
+ li r0,8
+L(le8):
+ mtctr r0
+ addi r7,r6,-8
+ addi r9,r3,(SIGCONTEXT_GP_REGS+(PT_R3*8)-8)
+L(parmloop2):
+ ldu r0,8(r7)
+ stdu r0,8(r9)
+ bdnz L(parmloop2)
+
+ addi r0,r5,-8
+ ble cr1,L(noparms)
+ mtctr r0
+ addi r9,r8,FRAME_PARM9_SAVE-8
+L(parmloop):
+ ldu r0,8(r7)
+ stdu r0,8(r9)
+ bdnz L(parmloop)
+
+L(noparms):
+
+ /* Load the function address and TOC from the function descriptor
+ and store them in the ucontext as NIP and r2. Store the 3rd
+ field of the function descriptor into the ucontext as r11 in case
+ the calling language needs the "environment pointer". */
+ ld r0,0(r4)
+ ld r10,8(r4);
+ ld r9,16(r4);
+ std r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r3)
+ std r10,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r3)
+ std r9,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r3)
+
+ /* If the target function returns we need to do some cleanup. We use a
+ code trick to get the address of our cleanup function into the link
+ register. Do not add any code between here and L(exitcode). */
+ bl L(gotexitcodeaddr);
+
+ /* This is the helper code which gets called if a function which
+ is registered with 'makecontext' returns. In this case we
+ have to install the context listed in the uc_link element of
+ the context 'makecontext' manipulated at the time of the
+ 'makecontext' call. If the pointer is NULL the process must
+ terminate. */
+L(exitcode):
+ /* Recover the ucontext and TOC from the dummy frame. */
+ ld r1,FRAME_BACKCHAIN(r1) /* Unstack the parameter save area frame. */
+ ld r3,FRAME_COMPILER_DW(r1)
+ ld r2,FRAME_TOC_SAVE(r1)
+ ld r3,UCONTEXT_LINK(r3) /* Load the resume context. */
+ cmpdi r3,0
+ beq L(BADSTATUS)
+ bl JUMPTARGET(__setcontext)
+ nop
+
+L(BADSTATUS):
+/* If setcontext returns (which can happen if the syscall fails) we will
+ exit the program with error status (-1). */
+ li r3,-1
+ b JUMPTARGET(exit);
+
+ /* The address of the exit code is in the link register. Store the lr
+ in the ucontext as LNK so the target function will return to our
+ exit code. */
+L(gotexitcodeaddr):
+ mflr r0
+ std r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r3)
+ ld r0,128+FRAME_LR_SAVE(r1)
+ addi r1,r1,128
+ mtlr r0
+ blr
+END(__makecontext)
+
+weak_alias(__makecontext, makecontext)
--- /dev/null
+/* Switch to context.
+ Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+
+#define __ASSEMBLY__
+#include <asm/ptrace.h>
+#include "ucontext_i.h"
+
+ENTRY(__setcontext)
+ mflr r0
+ std r31,-8(1)
+ std r0,FRAME_LR_SAVE(r1)
+ stdu r1,-128(r1)
+ mr r31,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
+ * msr and ctr. We don't restore r13 since it will be used as
+ * the TLS pointer. */
+ lwz r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r31)
+ cmpdi r0,0
+ bne L(do_sigret)
+
+ li r5,0
+ addi r4,r3,UCONTEXT_SIGMASK
+ li r3,SIG_SETMASK
+ bl .sigprocmask
+ nop
+ cmpdi r3,0
+ bne L(error_exit)
+
+ 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)
+ mtfsf 0xff,fp0
+ 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)
+ mfcr 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(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(__setcontext)
+
+weak_alias(__setcontext, setcontext)
--- /dev/null
+/* Save current context and install the given one.
+ Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+
+#define __ASSEMBLY__
+#include <asm/ptrace.h>
+#include "ucontext_i.h"
+
+ENTRY(__swapcontext)
+ std r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3)
+ std r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3)
+ mflr r0
+ std r31,-8(1)
+ std r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r3)
+ std r0,FRAME_LR_SAVE(r1)
+ std r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r3)
+ std r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r3)
+ stdu r1,-128(r1)
+ 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_GP_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 .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. */
+ lwz r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r31)
+ cmpdi r0,0
+ bne L(do_sigret)
+
+ 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)
+ mtfsf 0xff,fp0
+ 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)
+ mfcr 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(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)
+
+weak_alias(__swapcontext, swapcontext)
--- /dev/null
+/* Copyright (C) 1998, 1999, 2002 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., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H 1
+
+#include <features.h>
+#include <signal.h>
+
+/* We need the signal context definitions even if they are not used
+ included in <signal.h>. */
+#include <bits/sigcontext.h>
+
+/* A machine context is exactly a sigcontext. */
+typedef struct sigcontext mcontext_t;
+
+/* Userlevel context. */
+typedef struct ucontext
+ {
+ unsigned long int uc_flags;
+ struct ucontext *uc_link;
+ stack_t uc_stack;
+#if __WORDSIZE == 32
+ mcontext_t uc_mcontext;
+ __sigset_t uc_sigmask;
+#else
+ sigset_t uc_sigmask;
+ mcontext_t uc_mcontext; /* last for extensibility */
+#endif
+ } ucontext_t;
+
+#endif /* sys/ucontext.h */
projects / platform / upstream / glibc.git / commitdiff