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* sysdeps/unix/sysv/linux/sh/makecontext.S: New file.
* sysdeps/unix/sysv/linux/sh/sh3/getcontext.S: New file. * sysdeps/unix/sysv/linux/sh/sh4/getcontext.S: New file. * sysdeps/unix/sysv/linux/sh/sh3/setcontext.S: New file. * sysdeps/unix/sysv/linux/sh/sh4/setcontext.S: New file. * sysdeps/unix/sysv/linux/sh/sh3/swapcontext.S: New file. * sysdeps/unix/sysv/linux/sh/sh4/swapcontext.S: New file. * sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.h: New file. * sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.h: New file. * sysdeps/unix/sysv/linux/sh/sys/ucontext.h: Removed. * sysdeps/unix/sysv/linux/sh/sh3/sys/ucontext.h: New file. * sysdeps/unix/sysv/linux/sh/sh4/sys/ucontext.h: New file.
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Ulrich Drepper
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Oct 16, 2005
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| /* Create new context. | ||
| Copyright (C) 2005 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> | ||
|
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||
| #include "ucontext_i.h" | ||
|
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| /* void __makecontext (struct ucontext *ucp, void (*func)(), int argc, ...); | ||
| __makecontext sets up a stack and registers for context to run a given | ||
| function. The registers are set up like this: | ||
| r4-r7: parameters 1 to 4 | ||
| r8 : uc_link from ucontext structure | ||
| pc : (*func) pointer | ||
| pr : address of exitcode | ||
| r15 : stack pointer for func. */ | ||
|
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||
| .text | ||
| .align 5 | ||
| cfi_startproc | ||
| ENTRY(__makecontext) | ||
| mov #4, r3 | ||
| mov.l @(oSS_SP,r4), r1 | ||
| mov.l @(oSS_SIZE,r4), r2 | ||
| add r1, r2 | ||
| cmp/gt r6, r3 | ||
| bf/s 1f | ||
| shlr2 r2 | ||
| sub r6, r2 | ||
| add r3, r2 | ||
| 1: | ||
| shll2 r2 | ||
| mov #oR15, r0 | ||
| mov.l @(oLINK,r4), r1 | ||
| mov.l r2, @(r0,r4) | ||
| mov.l r1, @(oR8,r4) | ||
| mov #oPC, r0 | ||
| mov.l r5, @(r0,r4) | ||
|
|
||
| cmp/pl r6 | ||
| bf/s .L1 | ||
| dt r6 | ||
| mov.l r7, @(oR4,r4) | ||
| cmp/pl r6 | ||
| bf/s .L1 | ||
| dt r6 | ||
| mov.l @(0,r15), r1 | ||
| mov.l r1, @(oR5,r4) | ||
| cmp/pl r6 | ||
| bf/s .L1 | ||
| dt r6 | ||
| mov.l @(4,r15), r1 | ||
| mov.l r1, @(oR6,r4) | ||
| cmp/pl r6 | ||
| bf/s .L1 | ||
| dt r6 | ||
| mov.l @(8,r15), r1 | ||
| mov.l r1, @(oR7,r4) | ||
| mov #12,r0 | ||
| .L0: | ||
| cmp/pl r6 | ||
| bf/s .L1 | ||
| dt r6 | ||
| mov.l @(r0,r15), r1 | ||
| mov.l r1, @r2 | ||
| add #4, r0 | ||
| bra .L0 | ||
| add #4, r2 | ||
| .L1: | ||
| #ifdef PIC | ||
| mova .Lexitcode, r0 | ||
| #else | ||
| mov.l .L2, r0 | ||
| #endif | ||
| add #oPR, r4 | ||
| rts | ||
| mov.l r0, @r4 | ||
| #ifndef PIC | ||
| .align 2 | ||
| .L2: | ||
| .long .Lexitcode | ||
| #endif | ||
| cfi_endproc | ||
|
|
||
| .align 5 | ||
| .Lexitcode: | ||
| tst r8, r8 | ||
| bt/s 2f | ||
| mov r8, r4 | ||
| #ifdef PIC | ||
| mova .Lgot, r0 | ||
| mov.l .Lgot, r12 | ||
| add r0, r12 | ||
| mov.l .L3, r1 | ||
| bsrf r1 | ||
| .LPCS0: | ||
| nop | ||
| #else | ||
| mov.l .L3, r1 | ||
| jsr @r1 | ||
| nop | ||
| #endif | ||
| 2: | ||
| mov.l .L4, r1 | ||
| #ifdef PIC | ||
| add r12, r1 | ||
| #endif | ||
| jsr @r1 | ||
| mov r0, r4 | ||
| 0: | ||
| bra 0b | ||
| nop | ||
|
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||
| .align 2 | ||
| #ifdef PIC | ||
| .Lgot: | ||
| .long _GLOBAL_OFFSET_TABLE_ | ||
| .L3: | ||
| .long __setcontext@PLT-(.LPCS0+2-(.)) | ||
| .L4: | ||
| .long HIDDEN_JUMPTARGET(exit)@GOTOFF | ||
| #else | ||
| .L3: | ||
| .long __setcontext | ||
| .L4: | ||
| .long HIDDEN_JUMPTARGET(exit) | ||
| #endif | ||
| PSEUDO_END(__makecontext) | ||
|
|
||
| weak_alias (__makecontext, makecontext) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| /* Save current context. | ||
| Copyright (C) 2005 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. */ | ||
|
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||
| #include <sysdep.h> | ||
|
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| #include "ucontext_i.h" | ||
|
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| /* int __getcontext (ucontext_t *uc); */ | ||
|
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| .text | ||
| .align 5 | ||
| cfi_startproc | ||
| ENTRY(__getcontext) | ||
|
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||
| /* 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 | ||
|
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||
| /* Save T flag to SR. */ | ||
| movt r1 | ||
| mov.l r1, @-r0 | ||
| sts.l pr, @-r0 | ||
|
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||
| /* The return address of getcontext is the restart pc. */ | ||
| sts.l pr, @-r0 | ||
|
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||
| 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 | ||
|
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||
| /* sigprocmask (SIG_BLOCK, NULL, &uc->uc_sigmask). */ | ||
| mov r4, r6 | ||
| add #oSIGMASK, 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 | ||
|
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||
| cfi_endproc | ||
| PSEUDO_END(__getcontext) | ||
|
|
||
| weak_alias (__getcontext, getcontext) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| /* Install given context. | ||
| Copyright (C) 2005 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> | ||
|
|
||
| #include "ucontext_i.h" | ||
|
|
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| /* int __setcontext (const ucontext_t *uc); */ | ||
|
|
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| .text | ||
| .align 5 | ||
| cfi_startproc | ||
| ENTRY(__setcontext) | ||
|
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||
| mov r4, r8 | ||
|
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||
| /* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, NULL). */ | ||
| mov r4, r5 | ||
| add #oSIGMASK, r5 | ||
| mov #SIG_SETMASK, r4 | ||
| mov #0, r6 | ||
| 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 .Lsetcontext_restore | ||
| .Lsyscall_error: | ||
| SYSCALL_ERROR_HANDLER | ||
| .Lpseudo_end: | ||
| rts | ||
| nop | ||
|
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||
| .Lsetcontext_restore: | ||
| mov r8, r0 | ||
| add #(oPC), r0 | ||
| mov.l @r0+, r2 | ||
| lds.l @r0+, pr | ||
|
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| /* Restore T frag. */ | ||
| mov.l @r0+, r1 | ||
| shlr r1 | ||
| /* Skip GBR which is used for thread pointer. */ | ||
| add #4, r0 | ||
|
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| lds.l @r0+, mach | ||
| lds.l @r0+, macl | ||
|
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| mov r8, r0 | ||
| add #(oR9), r0 | ||
| mov.l @r0+, r9 | ||
| mov.l @r0+, r10 | ||
| mov.l @r0+, r11 | ||
| mov.l @r0+, r12 | ||
| mov.l @r0+, r13 | ||
| mov.l @r0+, r14 | ||
| mov.l @r0+, r15 | ||
|
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| mov r8, r0 | ||
| mov.l @(oR0,r0), r1 | ||
| mov.l r1, @-r15 | ||
| cfi_adjust_cfa_offset(4) | ||
| cfi_rel_offset (r1, 0) | ||
| mov.l r2, @-r15 | ||
| cfi_adjust_cfa_offset(4) | ||
| cfi_rel_offset (r2, 0) | ||
|
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||
| mov.l @(oR1,r0), r1 | ||
| mov.l @(oR2,r0), r2 | ||
| mov.l @(oR3,r0), r3 | ||
| mov.l @(oR4,r0), r4 | ||
| mov.l @(oR5,r0), r5 | ||
| mov.l @(oR6,r0), r6 | ||
| mov.l @(oR7,r0), r7 | ||
| mov.l @(oR8,r0), r8 | ||
| mov.l @r15+, r0 | ||
| jmp @r0 | ||
| mov.l @r15+, r0 | ||
|
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| cfi_endproc | ||
| PSEUDO_END(__setcontext) | ||
|
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| weak_alias (__setcontext, setcontext) |
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