diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/tile/nptl/sysdep-cancel.h')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/tile/nptl/sysdep-cancel.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/tile/nptl/sysdep-cancel.h b/ports/sysdeps/unix/sysv/linux/tile/nptl/sysdep-cancel.h new file mode 100644 index 0000000000..8db7a40a54 --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/tile/nptl/sysdep-cancel.h @@ -0,0 +1,154 @@ +/* Copyright (C) 2011 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. + + 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 <tls.h> +#ifndef __ASSEMBLER__ +# include <nptl/pthreadP.h> +#endif + +#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt + +/* Allow hacking in some extra code if desired. */ +#ifndef PSEUDO_EXTRA +#define PSEUDO_EXTRA +#endif + +#undef PSEUDO +#define PSEUDO(name, syscall_name, args) \ + ENTRY(__##syscall_name##_nocancel); \ + PSEUDO_EXTRA \ + moveli TREG_SYSCALL_NR_NAME, SYS_ify(syscall_name); \ + swint1; \ + BNEZ r1, 0f; \ + jrp lr; \ + END(__##syscall_name##_nocancel); \ + ENTRY (name) \ + SINGLE_THREAD_P(r11); \ + BEQZ r11, L(pseudo_cancel); \ + PSEUDO_EXTRA \ + moveli TREG_SYSCALL_NR_NAME, SYS_ify(syscall_name); \ + swint1; \ + BNEZ r1, 0f; \ + jrp lr; \ + L(pseudo_cancel): \ + { \ + move r11, sp; \ + ST sp, lr; \ + ADDI_PTR sp, sp, -STKSPACE; \ + }; \ + cfi_offset (lr, 0); \ + cfi_def_cfa_offset (STKSPACE); \ + { \ + ADDI_PTR r12, sp, REGSIZE; \ + ADDI_PTR r13, sp, 2 * REGSIZE; /* set up for PUSHARGS_0 */ \ + }; \ + ST r12, r11; \ + PUSHARGS_##args /* save syscall args */ \ + CENABLE; \ + ADDI_PTR r12, sp, 10 * REGSIZE; \ + { \ + ST r12, r0; /* save mask */ \ + ADDI_PTR r13, sp, 2 * REGSIZE; /* set up for POPARGS_0 */ \ + }; \ + POPARGS_##args /* restore syscall args */ \ + PSEUDO_EXTRA \ + moveli TREG_SYSCALL_NR_NAME, SYS_ify(syscall_name); \ + swint1; \ + ADDI_PTR r12, sp, 12 * REGSIZE; \ + { \ + ST r12, r1; /* save syscall result */ \ + ADDI_PTR r12, sp, 11 * REGSIZE; \ + }; \ + { \ + ST r12, r0; \ + ADDI_PTR r13, sp, 10 * REGSIZE; \ + }; \ + LD r0, r13; /* pass mask as arg1 */ \ + CDISABLE; \ + { \ + ADDI_PTR lr, sp, STKSPACE; \ + ADDI_PTR r0, sp, 11 * REGSIZE; \ + }; \ + { \ + LD r0, r0; \ + ADDI_PTR r1, sp, 12 * REGSIZE; \ + }; \ + LD r1, r1; \ + { \ + LD lr, lr; \ + ADDI_PTR sp, sp, STKSPACE; \ + }; \ + cfi_def_cfa_offset (0); \ + BNEZ r1, 0f + +# define PUSHARGS_0 /* nothing to do */ +# define PUSHARGS_1 PUSHARGS_0 { ADDI_PTR r14, sp, 3 * REGSIZE; ST r13, r0 }; +# define PUSHARGS_2 PUSHARGS_1 { ADDI_PTR r13, sp, 4 * REGSIZE; ST r14, r1 }; +# define PUSHARGS_3 PUSHARGS_2 { ADDI_PTR r14, sp, 5 * REGSIZE; ST r13, r2 }; +# define PUSHARGS_4 PUSHARGS_3 { ADDI_PTR r13, sp, 6 * REGSIZE; ST r14, r3 }; +# define PUSHARGS_5 PUSHARGS_4 { ADDI_PTR r14, sp, 7 * REGSIZE; ST r13, r4 }; +# define PUSHARGS_6 PUSHARGS_5 { ADDI_PTR r13, sp, 8 * REGSIZE; ST r14, r5 }; +# define PUSHARGS_7 PUSHARGS_6 { ADDI_PTR r14, sp, 9 * REGSIZE; ST r13, r6 }; + +# define POPARGS_0 /* nothing to do */ +# define POPARGS_1 POPARGS_0 { ADDI_PTR r14, sp, 3 * REGSIZE; LD r0, r13 }; +# define POPARGS_2 POPARGS_1 { ADDI_PTR r13, sp, 4 * REGSIZE; LD r1, r14 }; +# define POPARGS_3 POPARGS_2 { ADDI_PTR r14, sp, 5 * REGSIZE; LD r2, r13 }; +# define POPARGS_4 POPARGS_3 { ADDI_PTR r13, sp, 6 * REGSIZE; LD r3, r14 }; +# define POPARGS_5 POPARGS_4 { ADDI_PTR r14, sp, 7 * REGSIZE; LD r4, r13 }; +# define POPARGS_6 POPARGS_5 { ADDI_PTR r13, sp, 8 * REGSIZE; LD r5, r14 }; +# define POPARGS_7 POPARGS_6 { ADDI_PTR r14, sp, 9 * REGSIZE; LD r6, r13 }; + +# define STKSPACE (13 * REGSIZE) + +# ifdef IS_IN_libpthread +# define CENABLE jal __pthread_enable_asynccancel +# define CDISABLE jal __pthread_disable_asynccancel +# elif defined IS_IN_librt +# define CENABLE jal __librt_enable_asynccancel +# define CDISABLE jal __librt_disable_asynccancel +# else +# define CENABLE jal __libc_enable_asynccancel +# define CDISABLE jal __libc_disable_asynccancel +# endif + +# ifndef __ASSEMBLER__ +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) \ + == 0, 1) +# else +# define SINGLE_THREAD_P(reg) \ + ADDLI_PTR reg, tp, MULTIPLE_THREADS_OFFSET; \ + LD reg, reg; \ + CMPEQI reg, reg, 0 +#endif + +#elif !defined __ASSEMBLER__ + +# define SINGLE_THREAD_P 1 +# define NO_CANCELLATION 1 + +#endif + +#ifndef __ASSEMBLER__ +# define RTLD_SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +#endif |