diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/getcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/getcontext.S | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/getcontext.S b/sysdeps/unix/sysv/linux/ia64/getcontext.S deleted file mode 100644 index 4efe2a3b47..0000000000 --- a/sysdeps/unix/sysv/linux/ia64/getcontext.S +++ /dev/null @@ -1,156 +0,0 @@ -/* Copyright (C) 2001-2024 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, see - <https://www.gnu.org/licenses/>. */ - -#include <sysdep.h> -#include <features.h> - -#include "ucontext_i.h" - -/* __getcontext (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) - .prologue - .body - alloc r11 = ar.pfs, 1, 0, 4, 0 - - // sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask): - - mov r3 = SC_MASK - mov out0 = SIG_BLOCK - - flushrs // save dirty partition on rbs - mov out1 = 0 - add out2 = r3, in0 - - mov out3 = 8 // sizeof kernel sigset_t - DO_CALL(__NR_rt_sigprocmask) - - mov.m rFPSR = ar.fpsr - mov.m rRSC = ar.rsc - add r2 = SC_GR+1*8, r32 - ;; - mov.m rBSP = ar.bsp - .prologue - .save ar.unat, rUNAT - mov.m rUNAT = ar.unat - .body - 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 rPFS = r11 - ;; -.mem.offset 0,0; st8.spill [r2] = r5, 16 -.mem.offset 8,0; st8.spill [r3] = r6, 48 - and rTMP = ~0x3, rRSC - ;; -.mem.offset 0,0; st8.spill [r2] = r7, (SC_FR+2*16-(SC_GR+7*8)) -.mem.offset 8,0; st8.spill [r3] = sp, (SC_FR+3*16-(SC_GR+12*8)) - ;; - 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 - ;; - mov ar.unat = rUNAT // we're done spilling integer regs; restore caller's UNaT - add r2 = SC_NAT, r32 - 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 [r2] = rB2, 16 - st8 [r3] = rB3, 16 - ;; - st8 [r2] = rB4 - st8 [r3] = rB5 - ret -END(__getcontext) - -weak_alias (__getcontext, getcontext) |