diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/Makefile | 8 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/__longjmp.S | 4 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/__start_context.S | 51 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h | 6 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/getcontext.S | 153 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/makecontext.c | 92 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/setcontext.S | 149 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sys/rse.h | 78 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sys/ucontext.h | 74 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/ucontext_i.h | 58 |
10 files changed, 623 insertions, 50 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/Makefile b/sysdeps/unix/sysv/linux/ia64/Makefile index 97861a4e97..7326b9f810 100644 --- a/sysdeps/unix/sysv/linux/ia64/Makefile +++ b/sysdeps/unix/sysv/linux/ia64/Makefile @@ -1,3 +1,11 @@ +ifeq ($(subdir),misc) +sysdep_headers += sys/rse.h +endif + +ifeq ($(subdir),stdlib) +sysdep_routines += __start_context +endif + ifeq ($(subdir),csu) CFLAGS-initfini.s += -DWEAK_GMON_START endif diff --git a/sysdeps/unix/sysv/linux/ia64/__longjmp.S b/sysdeps/unix/sysv/linux/ia64/__longjmp.S index 5cc2045097..967cab593d 100644 --- a/sysdeps/unix/sysv/linux/ia64/__longjmp.S +++ b/sysdeps/unix/sysv/linux/ia64/__longjmp.S @@ -62,9 +62,7 @@ __longjmp: sub r8=r8,in0 // r8 <- &orig_jmpbuf - &jmpbuf ;; ld8 r25=[r2] // r25 <- jmpbuf.ar_unat - shr r8=r8,3 // r8 <- (&orig_jmpbuf - &jmpbuf)/8 - ;; - and r8=0x3f,r8 + extr.u r8=r8,3,6 // r8 <- (&orig_jmpbuf - &jmpbuf)/8 & 0x3f ;; cmp.lt pNeg,pPos=r8,r0 mov r2=in0 diff --git a/sysdeps/unix/sysv/linux/ia64/__start_context.S b/sysdeps/unix/sysv/linux/ia64/__start_context.S new file mode 100644 index 0000000000..c21b4cf33a --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/__start_context.S @@ -0,0 +1,51 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include <sysdep.h> +#include <features.h> + +/* When a context set up by __makecontext() is activated, control + transfers to __start_context. When we get here: + + b1 = entry point of function to call + in0 = address of UCP to resume after function returns + in1 = global pointer for __start_context + out0 .. outN = arguments for function */ + +ENTRY(__start_context) + .prologue + alloc r2 = ar.pfs, 2, 0, 8, 0 + + .save rp, r4 // terminate call chain with a NULL rp + mov r4 = r0 + ;; + + .body + br.call.sptk rp = b1 +1: + mov gp = in1 // restore gp + cmp.ne p6,p0 = in0, r0 // uc_link != 0 ? + ;; +(p6) mov out0 = in0 +(p6) br.call.sptk rp = __setcontext +.Lexit: + mov out0 = 0 + br.call.sptk rp = exit + +1: br.cond.sptk .Lexit +END(__start_context) diff --git a/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h b/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h index 101aad7e5a..8daaa5e485 100644 --- a/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h +++ b/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h @@ -21,12 +21,6 @@ # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead." #endif -#ifndef sigcontext_struct -/* Kernel headers before 2.1.1 define a struct sigcontext_struct, but - we need sigcontext. */ -# define sigcontext_struct sigcontext -#endif - #include <asm/fpu.h> #include <bits/sigstack.h> diff --git a/sysdeps/unix/sysv/linux/ia64/getcontext.S b/sysdeps/unix/sysv/linux/ia64/getcontext.S new file mode 100644 index 0000000000..24b58d435a --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/getcontext.S @@ -0,0 +1,153 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include <sysdep.h> +#include <features.h> + +#include "ucontext_i.h" + +/* __getcontext (const ucontext_t *ucp) + + Saves the machine context in UCP such that when it is activated, + it appears as if __getcontext() returned again. The only difference + is that on a first return, r9 contains 1 and on a subsequent + return, it contains 0. + + This implementation in intended to be used for *synchronous* context + switches only. Therefore, it does not have to save anything + other than the PRESERVED state. */ + +ENTRY(__getcontext) + alloc r16 = ar.pfs, 1, 0, 3, 0 + + // sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask): + + mov r2 = SC_MASK + mov r15 = __NR_rt_sigprocmask + ;; + mov out0 = SIG_BLOCK + mov out1 = 0 + add out2 = r2, in0 + + break __BREAK_SYSCALL + flushrs // save dirty partition on rbs + + mov.m rFPSR = ar.fpsr + mov.m rRSC = ar.rsc + add r2 = SC_GR+1*8, r32 + ;; + mov.m rBSP = ar.bsp + mov.m rUNAT = ar.unat + add r3 = SC_GR+4*8, r32 + ;; + +.mem.offset 0,0; st8.spill [r2] = r1, (5*8 - 1*8) +.mem.offset 8,0; st8.spill [r3] = r4, 16 + mov.i rPFS = ar.pfs + ;; +.mem.offset 0,0; st8.spill [r2] = r5, 16 +.mem.offset 8,0; st8.spill [r3] = r6 + add r3 = (SC_FR+3*16-(SC_GR+6*8)), r3 + ;; + st8.spill [r2] = r7, (SC_FR+2*16-(SC_GR+7*8)) + nop 0 + and rTMP = ~0x3, rRSC + ;; + mov.m ar.rsc = rTMP // put RSE into enforced lazy mode + mov.m rNAT = ar.unat + mov.i rLC = ar.lc + ;; + mov.m rRNAT = ar.rnat + mov.m ar.rsc = rRSC // restore RSE mode + mov rPR = pr + + /* + * Rotate NaT bits by rPOS positions to the right: + */ + stf.spill [r2] = f2, 32 + stf.spill [r3] = f3, 32 + add rPOS = SC_GR, r32 // rPOS <- &sc_gr[0] + ;; + stf.spill [r2] = f4, (16*16-4*16) + stf.spill [r3] = f5, (17*16-5*16) + extr.u rPOS = rPOS, 3, 6 // get NaT bit number for r0 + ;; + stf.spill [r2] = f16, 32 + stf.spill [r3] = f17, 32 + sub rCPOS = 64, rPOS + ;; + stf.spill [r2] = f18, 32 + stf.spill [r3] = f19, 32 + shr.u rTMP = rNAT, rPOS + ;; + stf.spill [r2] = f20, 32 + stf.spill [r3] = f21, 32 + shl rNAT = rNAT, rCPOS + ;; + stf.spill [r2] = f22, 32 + stf.spill [r3] = f23, 32 + or rNAT = rNAT, rTMP + ;; + stf.spill [r2] = f24, 32 + stf.spill [r3] = f25, 32 + mov r8 = 0 + ;; + stf.spill [r2] = f26, 32 + stf.spill [r3] = f27, 32 + mov r9 = 1 + ;; + stf.spill [r2] = f28, 32 + stf.spill [r3] = f29, 32 + mov rB0 = b0 + ;; + stf.spill [r2] = f30, 32 + stf.spill [r3] = f31, 32 + mov rB1 = b1 + ;; + add r2 = SC_NAT, r32 + nop 0 + add r3 = SC_BSP, r32 + ;; + st8 [r2] = rNAT, (SC_RNAT-SC_NAT) + st8 [r3] = rBSP, (SC_UNAT-SC_BSP) + mov rB2 = b2 + ;; + st8 [r2] = rRNAT, (SC_FPSR-SC_RNAT) + st8 [r3] = rUNAT, (SC_PFS-SC_UNAT) + mov rB3 = b3 + ;; + st8 [r2] = rFPSR, (SC_LC-SC_FPSR) + st8 [r3] = rPFS, (SC_PR-SC_PFS) + mov rB4 = b4 + ;; + st8 [r2] = rLC, (SC_BR+0*8-SC_LC) + st8 [r3] = rPR, (SC_BR+1*8-SC_PR) + mov rB5 = b5 + + st8 [r2] = rB0, 16 + st8 [r3] = rB1, 16 + ;; + st8 [r3] = rB2, 16 + st8 [r3] = rB3, 16 + ;; + st8 [r2] = rB4 + st8 [r3] = rB5 + ret +END(__getcontext) + +weak_alias(__getcontext, getcontext) diff --git a/sysdeps/unix/sysv/linux/ia64/makecontext.c b/sysdeps/unix/sysv/linux/ia64/makecontext.c new file mode 100644 index 0000000000..9f80b114bd --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/makecontext.c @@ -0,0 +1,92 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <ucontext.h> + +#include <ia64/rse.h> + +struct fdesc + { + unsigned long ip; + unsigned long gp; + }; + +#define PUSH(val) \ +do { \ + if (ia64_rse_is_rnat_slot (rbs)) \ + *rbs++ = 0; \ + *rbs++ = (val); \ +} while (0) + + +/* This implementation can handle an ARGC value of at most 8 and + values can be passed only in integer registers (r32-r39). */ + +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + struct sigcontext *sc = &ucp->uc_mcontext; + extern void __start_context (ucontext_t *link, long gp, ...); + unsigned long stack_start, stack_end; + va_list ap; + long *rbs; + int i; + + stack_start = (long) sc->sc_stack.ss_sp; + stack_end = (long) sc->sc_stack.ss_sp + sc->sc_stack.ss_size; + + stack_start = (stack_start + 7) & -8; + stack_end = (stack_start + 15) & -16; + + if (argc > 8) + { + fprintf (stderr, "__makecontext: does not know how to handle more " + "than 8 arguments\n"); + exit (-1); + } + + /* set the entry point and global pointer: */ + sc->sc_br[0] = ((struct fdesc *) &__start_context)->ip; + sc->sc_br[1] = ((struct fdesc *) func)->ip; + sc->sc_gr[1] = ((struct fdesc *) func)->gp; + + /* set up the call frame: */ + sc->sc_ar_pfs = ((sc->sc_ar_pfs & ~0x3fffffffffUL) + | (argc + 2) | ((argc + 2) << 7)); + rbs = (long *) stack_start; + PUSH((long) ucp->uc_link); + PUSH(((struct fdesc *) &__start_context)->gp); + va_start (ap, argc); + for (i = 0; i < argc; ++i) + PUSH(va_arg (ap, long)); + va_end (ap); + + /* set the memory and register stack pointers: */ + sc->sc_ar_bsp = (long) rbs; + sc->sc_gr[12] = stack_end - 16; + + /* clear the NaT bits for r1 and r12: */ + sc->sc_nat &= ~((1 << 1) | (1 << 12)); + sc->sc_ar_rnat = 0; +} + +weak_alias (__makecontext, makecontext) diff --git a/sysdeps/unix/sysv/linux/ia64/setcontext.S b/sysdeps/unix/sysv/linux/ia64/setcontext.S new file mode 100644 index 0000000000..0d6e9a0bce --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/setcontext.S @@ -0,0 +1,149 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include <sysdep.h> +#include <features.h> + +#include "ucontext_i.h" + +/* __setcontext (const ucontext_t *ucp) + + Restores the machine context in UCP and thereby resumes execution + in that context. + + This implementation in intended to be used for *synchronous* context + switches only. Therefore, it does not have to restore anything + other than the PRESERVED state. */ + +ENTRY(__setcontext) + alloc r16 = ar.pfs, 1, 0, 3, 0 + + // sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL): + + mov r2 = SC_MASK + mov r15 = __NR_rt_sigprocmask + ;; + mov out0 = SIG_SETMASK + add out1 = r2, in0 + mov out2 = 0 + + invala + break __BREAK_SYSCALL + add r2 = SC_NAT, r32 + + add r3 = SC_RNAT, r32 // r3 <- &sc_ar_rnat + add rPOS = SC_GR, r32 // rPOS <- &sc_gr[0] + ;; + ld8 rNAT = [r2], (SC_BSP-SC_NAT) + extr.u rPOS = rPOS, 3, 6 // get NaT bit number for r0 + ;; + ld8 rBSP = [r2], (SC_UNAT-SC_BSP) + ld8 rRNAT = [r3], (SC_FPSR-SC_RNAT) + /* + * Rotate NaT bits by rPOS positions to the left: + */ + sub rCPOS = 64, rPOS + ;; + ld8 rUNAT = [r2], (SC_PFS-SC_UNAT) + ld8 rFPSR = [r3], (SC_LC-SC_FPSR) + shl rTMP = rNAT, rPOS + ;; + ld8 rPFS = [r2], (SC_PR-SC_PFS) + ld8 rLC = [r3], (SC_BR+0*8-SC_LC) + shr.u rNAT = rNAT, rCPOS + ;; + ld8 rPR = [r2], (SC_BR+1*8-SC_PR) + ld8 rB0 = [r3], 16 + or rNAT = rNAT, rTMP + ;; + ld8 rB1 = [r2], 16 + ld8 rB2 = [r3], 16 + ;; + mov.m ar.unat = rNAT + mov.m rRSC = ar.rsc + ;; + ld8 rB3 = [r2], 16 + ld8 rB4 = [r3], (SC_GR+1*8-(SC_BR+4*8)) + ;; + ld8 rB5 = [r2], (SC_GR+4*8-(SC_BR+5*8)) + ld8.fill r1 = [r3], (5*8 - 1*8) + ;; + ld8.fill r4 = [r2], 16 + ld8.fill r5 = [r3], 16 + mov b0 = rB0 + ;; + ld8.fill r6 = [r2] + ld8.fill r7 = [r3], (SC_FR+2*16-(SC_GR+7*8)) + adds r2 = (SC_FR+3*16-(SC_GR+6*8)), r2 + ;; + ldf.fill f3 = [r2], 16 + ldf.fill f2 = [r3], 48 + mov b1 = rB1 + ;; + ldf.fill f4 = [r2], (16*16-4*16) + ldf.fill f5 = [r3], (17*16-5*16) + mov b2 = rB2 + ;; + ldf.fill f16 = [r2], 32 + ldf.fill f17 = [r3], 32 + mov b3 = rB3 + ;; + ldf.fill f18 = [r2], 32 + ldf.fill f19 = [r3], 32 + mov b4 = rB4 + ;; + ldf.fill f20 = [r2], 32 + ldf.fill f21 = [r3], 32 + mov b5 = rB5 + ;; + ldf.fill f22 = [r2], 32 + ldf.fill f23 = [r3], 32 + mov r8 = 0 + ;; + ldf.fill f24 = [r2], 32 + ldf.fill f25 = [r3], 32 + mov r9 = 0 + ;; + ldf.fill f26 = [r2], 32 + ldf.fill f27 = [r3], 32 + dep rTMP = 0, rRSC, 16, 14 // clear ar.rsc.loadrs + ;; + ldf.fill f28 = [r2], 32 + ldf.fill f29 = [r3], 32 + and rTMP = ~0x3, rTMP // clear ar.rsc.mode + ;; + ldf.fill f30 = [r2], 32 + ldf.fill f31 = [r3], 32 + mov pr = rPR, -1 + ;; + mov.m ar.rsc = rTMP // put RSE into enforced lazy mode + mov.m ar.fpsr = rFPSR + mov.i ar.pfs = rPFS + ;; + loadrs // drop dirty partition is empty + ;; + mov.m ar.bspstore = rBSP + mov.m ar.unat = rUNAT + mov.i ar.lc = rLC + ;; + mov.m ar.rnat = rRNAT + mov.m ar.rsc = rRSC + ret +END(__setcontext) + +weak_alias(__setcontext, setcontext) diff --git a/sysdeps/unix/sysv/linux/ia64/sys/rse.h b/sysdeps/unix/sysv/linux/ia64/sys/rse.h new file mode 100644 index 0000000000..a6ca53a5c6 --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/sys/rse.h @@ -0,0 +1,78 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _ia64_rse_h +#define _ia64_rse_h + +#include <features.h> + +/* Register stack engine related helper functions. This file may be + used in applications, so be careful about the name-space and give + some consideration to non-GNU C compilers (though __inline is + fine). */ + +static __inline unsigned long +ia64_rse_slot_num (unsigned long *addr) +{ + return (((unsigned long) addr) >> 3) & 0x3f; +} + +/* Return TRUE if ADDR is the address of an RNAT slot. */ + +static __inline unsigned long +ia64_rse_is_rnat_slot (unsigned long *addr) +{ + return ia64_rse_slot_num (addr) == 0x3f; +} + +/* Returns the address of the RNAT slot that covers the slot at + address SLOT_ADDR. */ + +static __inline unsigned long * +ia64_rse_rnat_addr (unsigned long *slot_addr) +{ + return (unsigned long *) ((unsigned long) slot_addr | (0x3f << 3)); +} + +/* Calcuate the number of registers in the dirty partition starting at + BSPSTORE with a size of DIRTY bytes. This isn't simply DIRTY + divided by eight because the 64th slot is used to store ar.rnat. */ + +static __inline unsigned long +ia64_rse_num_regs (unsigned long *bspstore, unsigned long *bsp) +{ + unsigned long slots = (bsp - bspstore); + + return slots - (ia64_rse_slot_num(bspstore) + slots)/0x40; +} + +/* The inverse of the above: given bspstore and the number of + registers, calculate ar.bsp. */ + +static __inline unsigned long * +ia64_rse_skip_regs (unsigned long *addr, long num_regs) +{ + long delta = ia64_rse_slot_num(addr) + num_regs; + + if (num_regs < 0) + delta -= 0x3e; + return addr + num_regs + delta/0x3f; +} + +#endif /* _ia64_rse_h */ diff --git a/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h b/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h index babb41de4b..8ca52209ba 100644 --- a/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h +++ b/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1998, 2000, 2001 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 @@ -24,48 +24,40 @@ #include <bits/sigstack.h> -typedef struct -{ - /* Place-holder for interrupt collection state. */ - long int ics_placeholder[15]; - unsigned long int ar_fpsr; /* Floating point status. */ - unsigned long int gp; /* Global data pointer (gr1). */ - /* scratch registers: */ - unsigned long int gr8, gr9, gr10, gr11, gr13, gr14, gr15; - unsigned long int gr16, gr17, gr18, gr19, gr20, gr21, gr22, gr23; - unsigned long int gr24, gr25, gr26, gr27, gr28, gr29, gr30, gr31; - unsigned long int ar_unat; - unsigned long int ar_ec; - unsigned long int ar_ccv; - /* RSE state: */ - unsigned long int ar_bsp_base; /* Location of RSE spill area. */ - unsigned long int ar_pfs; - unsigned long int ar_rsc; - unsigned long int ar_bspstore; - unsigned long int ar_rnat; - /* Misc. state: */ - unsigned long int dirty; /* BSP - BSPSTORE */ - unsigned long int cr_tpr; /* Hw interrupt mask register. */ - unsigned long int tpdp; /* thread private data pointer. */ - unsigned long int br_6, br_7; - /* Argument regs (gr32-gr39): */ - unsigned long int arg0, arg1, arg2, arg3; - unsigned long int arg4, arg5, arg6, arg7; - unsigned long int ss_flags; /* Save state flags. */ - unsigned long int br_1, br_2, br_3, br_4, br_5; /* Branch registers. */ - unsigned long int p_regs; /* Predicates. */ -} mcontext_t; +/* + * These are here mostly for backwards compatibility with older Unices. + * IA-64 Linux does not distinguish between "struct sigcontext" and + * "ucontext_t" as all the necessary info is inside the former. + */ +typedef struct sigcontext mcontext_t; + +#ifdef __GNUC__ +# define _SC_GR0_OFFSET \ + (((char *) &((struct sigcontext *) 0)->sc_gr[0]) - (char *) 0) +#else +# define _SC_GR0_OFFSET 0xc8 /* pray that this is correct... */ +#endif typedef struct ucontext -{ - mcontext_t uc_mcontext; /* saved machine state */ - int uc_spares[8]; /* room to grow... */ - unsigned int uc_created_by_getcontext: 1; - unsigned int uc_reserved_flags: 31; - struct ucontext *uc_link; - __sigset_t uc_sigmask; - stack_t uc_stack; -} ucontext_t; + { + union + { + mcontext_t _mc; + struct + { + unsigned long _pad[_SC_GR0_OFFSET/8]; + struct ucontext *_link; /* this should overlay sc_gr[0] */ + } + _uc; + } + _u; + } +ucontext_t; + +#define uc_mcontext _u._mc +#define uc_sigmask _u._mc.sc_sigmask +#define uc_stack _u._mc.sc_stack +#define uc_link _u._uc._link #endif /* sys/ucontext.h */ diff --git a/sysdeps/unix/sysv/linux/ia64/ucontext_i.h b/sysdeps/unix/sysv/linux/ia64/ucontext_i.h new file mode 100644 index 0000000000..fc51662052 --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/ucontext_i.h @@ -0,0 +1,58 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Constants shared between setcontext() and getcontext(). Don't + install this header file. */ + +#define SIG_BLOCK 0 +#define SIG_UNBLOCK 1 +#define SIG_SETMASK 2 + +#define SC_NAT 0x008 +#define SC_BSP 0x048 +#define SC_RNAT 0x050 +#define SC_UNAT 0x060 +#define SC_FPSR 0x068 +#define SC_PFS 0x070 +#define SC_LC 0x078 +#define SC_PR 0x080 +#define SC_BR 0x088 +#define SC_GR 0x0c8 +#define SC_FR 0x1d0 +#define SC_MASK 0x9d0 + + +#define rTMP r16 +#define rPOS r16 +#define rCPOS r17 +#define rNAT r18 + +#define rB5 r18 +#define rB4 r19 +#define rB3 r20 +#define rB2 r21 +#define rB1 r22 +#define rB0 r23 +#define rRSC r24 +#define rBSP r25 +#define rRNAT r26 +#define rUNAT r27 +#define rFPSR r28 +#define rPFS r29 +#define rLC r30 +#define rPR r31 |