+2003-06-17 Paul Mackerras <paulus@samba.org>
+
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S: New file.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S: New file.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S: New file.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S: New file.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/ucontext_i.h: New file.
+ * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: Adjust.
+
2003-06-17 Jakub Jelinek <jakub@redhat.com>
* posix/regcomp.c (build_word_op): Use alnum instead of alpha class.
--- /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)
+ 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
+ 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
+ li r4,0
+ li r3,SIG_BLOCK
+ bl JUMPTARGET(sigprocmask)
+
+ lwz r0,20(r1)
+ addi r1,r1,16
+ mtlr r0
+ blr
+PSEUDO_END(__getcontext)
+
+weak_alias(__getcontext, getcontext)
--- /dev/null
+/* Set up a context to call a function.
+ 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)
+ /* Set up the first 7 args to the function in its registers */
+ stw r6,_UC_GREGS+(PT_R3*4)(r3)
+ stw r7,_UC_GREGS+(PT_R4*4)(r3)
+ stw r8,_UC_GREGS+(PT_R5*4)(r3)
+ stw r9,_UC_GREGS+(PT_R6*4)(r3)
+ stw r10,_UC_GREGS+(PT_R7*4)(r3)
+ lwz r8,8(r1)
+ lwz r9,12(r1)
+ stw r8,_UC_GREGS+(PT_R8*4)(r3)
+ stw r9,_UC_GREGS+(PT_R9*4)(r3)
+
+ /* Set the NIP to the start of the function */
+ stw r4,_UC_GREGS+(PT_NIP*4)(r3)
+
+ /* Set the function's r31 to ucp->uc_link for the exitcode below. */
+ lwz r7,_UC_LINK(r3)
+ stw r7,_UC_GREGS+(PT_R31*4)(r3)
+
+ /* Set the function's LR to point to the exitcode below. */
+#ifdef PIC
+ mflr r0
+ bl 1f
+1: mflr r6
+ addi r6,r6,L(exitcode)-1b
+ mtlr r0
+#else
+ lis r6,L(exitcode)@ha
+ addi r6,r6,L(exitcode)@l
+#endif
+ stw r6,_UC_GREGS+(PT_LNK*4)(r3)
+
+ /*
+ * Set up the stack frame for the function.
+ * If we have more than 5 args to the function (8 args to makecontext),
+ * there will be some arguments on the stack which have to end up
+ * in registers. If there are more than 8 args to the function,
+ * we have to copy (argc - 8) args from our stack to the functions'
+ * stack (and allow space for them in the frame).
+ */
+ lwz r4,_UC_STACK_SP(r3)
+ lwz r8,_UC_STACK_SIZE(r3)
+ add r4,r4,r8
+ rlwinm r4,r4,0,0,27 /* round down to 16-byte boundary */
+ addi r7,r4,-16 /* stack frame for fn's caller */
+ cmpwi r5,8
+ blt 2f /* less than 8 args is easy */
+ lwz r10,16(r1)
+ stw r10,_UC_GREGS+(PT_R10*4)(r3)
+ beq 2f /* if exactly 8 args */
+ subi r9,r5,3
+ subi r5,r5,8
+ rlwinm r9,r9,2,0,27
+ subf r7,r9,r4
+ mtctr r5 /* copy the 9th and following args */
+ addi r6,r1,16
+ addi r8,r7,4
+3: lwzu r10,4(r6)
+ stwu r10,4(r8)
+ bdnz 3b
+2: stw r7,_UC_GREGS+(PT_R1*4)(r3)
+ li r6,0
+ stw r6,0(r7)
+
+ blr
+
+/*
+ * If the function returns, it comes here. We put ucp->uc_link in
+ * r31, which is a callee-saved register. We have to continue with
+ * the context that r31 points to, or exit if it is 0.
+ */
+L(exitcode):
+ mr. r3,r31
+ beq 4f
+ bl JUMPTARGET(__setcontext)
+4: bl HIDDEN_JUMPTARGET(exit)
+ b 4b
+
+END(__makecontext)
+weak_alias(__makecontext, makecontext)
--- /dev/null
+/* Jump to a 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(__setcontext)
+ mflr r0
+ stwu r1,-16(r1)
+ stw r0,20(r1)
+ stw r31,12(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
+ * 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)
+
+ /* 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
+
+L(do_sigret):
+ addi r1,r3,-0xd0
+ li r0,SYS_ify(rt_sigreturn)
+ sc
+ /* NOTREACHED */
+
+PSEUDO_END(__setcontext)
+
+weak_alias(__setcontext, setcontext)
--- /dev/null
+/* Save current context and jump to a 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(__swapcontext)
+ /* Save the current context */
+ 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
+ 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
+ addi r4,r4,_UC_SIGMASK
+ li r3,SIG_SETMASK
+ bl JUMPTARGET(sigprocmask)
+ 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 r0,_UC_GREGS+(PT_MSR*4)(r31)
+ cmpwi r0,0
+ bne L(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(error_exit):
+ lwz r31,12(r1)
+ lwz r0,20(r1)
+ addi r1,r1,16
+ mtlr r0
+ blr
+
+L(do_sigret):
+ addi r1,r31,-0xd0
+ li r0,SYS_ify(rt_sigreturn)
+ sc
+ /* NOTREACHED */
+
+PSEUDO_END(__swapcontext)
+
+weak_alias(__swapcontext, swapcontext)
--- /dev/null
+/* Offsets and other constants needed in the *context() function
+ implementation.
+ 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. */
+
+#define SIG_BLOCK 0
+#define SIG_SETMASK 2
+
+#define _UC_LINK 4
+#define _UC_STACK_SP 8
+#define _UC_STACK_SIZE 16
+#define _UC_SIGMASK 64
+#define _UC_GREGS 192
+#define _UC_FREGS 384
+#define _UC_VREGS 656
included in <signal.h>. */
#include <bits/sigcontext.h>
-/* A machine context is exactly a sigcontext. */
+#if __WORDSIZE == 32
+
+/* Number of general registers. */
+#define NGREG 48
+
+/* Container for all general registers. */
+typedef unsigned long gregset_t[NGREG];
+
+/* Container for floating-point registers and status */
+typedef struct _libc_fpstate
+{
+ double fpregs[32];
+ double fpscr;
+ unsigned int _pad[2];
+} fpregset_t;
+
+/* Container for Altivec/VMX registers and status.
+ Needs to be aligned on a 16-byte boundary. */
+typedef struct _libc_vrstate
+{
+ unsigned int vrregs[32][4];
+ unsigned int vscr;
+ unsigned int vrsave;
+ unsigned int _pad[2];
+} vrregset_t;
+
+/* Context to describe whole processor state. */
+typedef struct
+{
+ gregset_t gregs;
+ fpregset_t fpregs;
+ vrregset_t vrregs __attribute__((__aligned__(16)));
+} mcontext_t;
+
+#else
+
+/* For 64-bit, a machine context is exactly a sigcontext. */
typedef struct sigcontext mcontext_t;
+#endif
+
/* Userlevel context. */
typedef struct ucontext
{
struct ucontext *uc_link;
stack_t uc_stack;
#if __WORDSIZE == 32
- mcontext_t uc_mcontext;
- __sigset_t uc_sigmask;
-#else
+ /* These fields are for backwards compatibility. */
+ int uc_pad[7];
+ mcontext_t *uc_regs;
+ unsigned int uc_oldsigmask[2];
+ int uc_pad2;
+#endif
sigset_t uc_sigmask;
mcontext_t uc_mcontext; /* last for extensibility */
-#endif
} ucontext_t;
#endif /* sys/ucontext.h */
projects / platform / upstream / glibc.git / commitdiff