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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/sysdeps/unix/sysv/linux/m68k/m680x0/setcontext.S | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.bz2 glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/m68k/m680x0/setcontext.S')
-rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/m68k/m680x0/setcontext.S | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/m68k/m680x0/setcontext.S b/REORG.TODO/sysdeps/unix/sysv/linux/m68k/m680x0/setcontext.S new file mode 100644 index 0000000000..29ac7df9b3 --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/m68k/m680x0/setcontext.S @@ -0,0 +1,94 @@ +/* Install given context. + Copyright (C) 2012-2017 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 + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + +ENTRY(__setcontext) + /* Load address of the context data structure. */ + move.l 4(%sp), %a0 + + /* Get the current signal mask. Note that we preserve D2/D3 in case + the system call fails and we return from the function with an + error. */ + move.l %d3, -(%sp) + cfi_adjust_cfa_offset (4) + cfi_rel_offset (%d3, 0) + move.l %d2, -(%sp) + cfi_adjust_cfa_offset (4) + cfi_rel_offset (%d2, 0) + clr.l %d3 + lea oSIGMASK(%a0), %a1 + move.l %a1, %d2 + move.l #SIG_SETMASK, %d1 + move.l #__NR_sigprocmask, %d0 + trap #0 + cmp.l #-4095, %d0 /* Check %d0 for error. */ + jcs 0f + move.l (%sp)+, %d2 + cfi_adjust_cfa_offset (-4) + cfi_restore (d2) + move.l (%sp)+, %d3 + cfi_adjust_cfa_offset (-4) + cfi_restore (d3) + jra SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ + +0: /* Load the new stack pointer. */ + move.l oSP(%a0), %sp + cfi_def_cfa (%a0, 0) + cfi_offset (%d2, oGREGS+2*4) + cfi_offset (%d3, oGREGS+3*4) + cfi_offset (%d4, oGREGS+4*4) + cfi_offset (%d5, oGREGS+5*4) + cfi_offset (%d6, oGREGS+6*4) + cfi_offset (%d7, oGREGS+7*4) + cfi_offset (%a2, oGREGS+10*4) + cfi_offset (%a3, oGREGS+11*4) + cfi_offset (%a4, oGREGS+12*4) + cfi_offset (%a5, oGREGS+13*4) + cfi_offset (%a6, oGREGS+14*4) + cfi_offset (%fp2, oFP2+0*12) + cfi_offset (%fp3, oFP2+1*12) + cfi_offset (%fp4, oFP2+2*12) + cfi_offset (%fp5, oFP2+3*12) + cfi_offset (%fp6, oFP2+4*12) + cfi_offset (%fp7, oFP2+5*12) + cfi_offset (%pc, oPC) + + /* Load the values of all the preserved registers (except SP). */ + movem.l oGREGS+2*4(%a0), %d2-%d7 + movem.l oGREGS+10*4(%a0), %a2-%a6 + fmovem.l oFPREGS(%a0), %fpsr/%fpcr/%fpiar + fmovem.x oFP2(%a0), %fp2-%fp7 + clr.l %d0 + + /* Fetch the address to return to. */ + movl oPC(%a0), %a1 + + /* End FDE here, we fall into another context. */ + cfi_endproc + cfi_startproc + cfi_register (%pc, %a1) + + jmp (%a1) + + cfi_offset (%pc, -4) +PSEUDO_END(__setcontext) + +weak_alias (__setcontext, setcontext) |