diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/sh/sh4/getcontext.S')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/sh/sh4/getcontext.S | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/sh/sh4/getcontext.S b/REORG.TODO/sysdeps/unix/sysv/linux/sh/sh4/getcontext.S new file mode 100644 index 0000000000..40cabd1d91 --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/sh/sh4/getcontext.S @@ -0,0 +1,132 @@ +/* Save current context. + Copyright (C) 2005-2017 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" + +/* int __getcontext (ucontext_t *uc); */ + + .text + .align 5 +ENTRY(__getcontext) + + /* Return value of getcontext. R0 is the only register whose + value is not preserved. */ + mov #0, r0 + mov.l r0, @(oR0,r4) + mov.l r1, @(oR1,r4) + mov.l r2, @(oR2,r4) + mov.l r3, @(oR3,r4) + mov.l r4, @(oR4,r4) + mov.l r5, @(oR5,r4) + mov.l r6, @(oR6,r4) + mov.l r7, @(oR7,r4) + mov r4, r0 + add #(oMACL+4), r0 + sts.l macl, @-r0 + sts.l mach, @-r0 + stc.l gbr, @-r0 + + /* Save T flag to SR. */ + movt r1 + mov.l r1, @-r0 + sts.l pr, @-r0 + + /* The return address of getcontext is the restart pc. */ + sts.l pr, @-r0 + + mov.l r15, @-r0 + mov.l r14, @-r0 + mov.l r13, @-r0 + mov.l r12, @-r0 + mov.l r11, @-r0 + mov.l r10, @-r0 + mov.l r9, @-r0 + mov.l r8, @-r0 + +#ifdef __SH_FPU_ANY__ + mov r4, r0 + /* We need 2 add instruction because oFPUL+4 > 127. */ + add #124,r0 + add #(oFPUL+4-124),r0 + sts.l fpul, @-r0 + sts.l fpscr, @-r0 + frchg + fmov.s fr15, @-r0 + fmov.s fr14, @-r0 + fmov.s fr13, @-r0 + fmov.s fr12, @-r0 + fmov.s fr11, @-r0 + fmov.s fr10, @-r0 + fmov.s fr9, @-r0 + fmov.s fr8, @-r0 + fmov.s fr7, @-r0 + fmov.s fr6, @-r0 + fmov.s fr5, @-r0 + fmov.s fr4, @-r0 + fmov.s fr3, @-r0 + fmov.s fr2, @-r0 + fmov.s fr1, @-r0 + fmov.s fr0, @-r0 + frchg + fmov.s fr15, @-r0 + fmov.s fr14, @-r0 + fmov.s fr13, @-r0 + fmov.s fr12, @-r0 + fmov.s fr11, @-r0 + fmov.s fr10, @-r0 + fmov.s fr9, @-r0 + fmov.s fr8, @-r0 + fmov.s fr7, @-r0 + fmov.s fr6, @-r0 + fmov.s fr5, @-r0 + fmov.s fr4, @-r0 + fmov.s fr3, @-r0 + fmov.s fr2, @-r0 + fmov.s fr1, @-r0 + fmov.s fr0, @-r0 +#endif /* __SH_FPU_ANY__ */ + + /* sigprocmask (SIG_BLOCK, NULL, &uc->uc_sigmask). */ + mov r4, r6 + /* We need 2 add instruction because oSIGMASK > 127. */ + add #(oSIGMASK/2), r6 + add #(oSIGMASK/2), r6 + mov #SIG_BLOCK, r4 + mov #0, r5 + mov #+SYS_ify(sigprocmask), r3 + trapa #0x13 + mov r0, r1 + mov #-12, r2 + shad r2, r1 + not r1, r1 // r1=0 means r0 = -1 to -4095 + tst r1, r1 // i.e. error in linux + bf .Lgetcontext_end +.Lsyscall_error: + SYSCALL_ERROR_HANDLER +.Lgetcontext_end: + /* All done, return 0 for success. */ + mov #0, r0 +.Lpseudo_end: + rts + nop + +PSEUDO_END(__getcontext) + +weak_alias (__getcontext, getcontext) |