389d1f1b23
* sysdeps/aarch64/crti.S: Add include of sysdep.h. (call_weak_fn): Use PTR_REG to get correct reg name in ILP32. * sysdeps/aarch64/dl-irel.h: Add include of sysdep.h. (elf_irela): Use AARCH64_R macro to get correct relocation in ILP32. * sysdeps/aarch64/dl-machine.h: Add include of sysdep.h. (elf_machine_load_address, RTLD_START, RTLD_START_1, RTLD_START, elf_machine_type_class, ELF_MACHINE_JMP_SLOT, elf_machine_rela, elf_machine_lazy_rel): Add ifdef's for ILP32 support. * sysdeps/aarch64/dl-tlsdesc.S (_dl_tlsdesc_return, _dl_tlsdesc_return_lazy, _dl_tlsdesc_dynamic, _dl_tlsdesc_resolve_hold): Extend pointers in ILP32, use PTR_REG to get correct reg name for ILP32. * sysdeps/aarch64/dl-trampoline.S (ip01): New Macro. (RELA_SIZE): New Macro. (_dl_runtime_resolve, _dl_runtime_profile): Use new macros and PTR_REG to support ILP32. * sysdeps/aarch64/jmpbuf-unwind.h (_JMPBUF_CFA_UNWINDS_ADJ): Add cast for ILP32 mode. * sysdeps/aarch64/memcmp.S (memcmp): Extend arg pointers for ILP32 mode. * sysdeps/aarch64/memcpy.S (memmove, memcpy): Ditto. * sysdeps/aarch64/memset.S (__memset): Ditto. * sysdeps/aarch64/strchr.S (strchr): Ditto. * sysdeps/aarch64/strchrnul.S (__strchrnul): Ditto. * sysdeps/aarch64/strcmp.S (strcmp): Ditto. * sysdeps/aarch64/strcpy.S (strcpy): Ditto. * sysdeps/aarch64/strlen.S (__strlen): Ditto. * sysdeps/aarch64/strncmp.S (strncmp): Ditto. * sysdeps/aarch64/strnlen.S (strnlen): Ditto. * sysdeps/aarch64/strrchr.S (strrchr): Ditto. * sysdeps/unix/sysv/linux/aarch64/clone.S: Ditto. * sysdeps/unix/sysv/linux/aarch64/setcontext.S (__setcontext): Ditto. * sysdeps/unix/sysv/linux/aarch64/swapcontext.S (__swapcontext): Ditto. * sysdeps/aarch64/__longjmp.S (__longjmp): Extend pointers in ILP32, change PTR_MANGLE call to use register numbers instead of names. * sysdeps/unix/sysv/linux/aarch64/getcontext.S (__getcontext): Ditto. * sysdeps/aarch64/setjmp.S (__sigsetjmp): Extend arg pointers for ILP32 mode, change PTR_MANGLE calls to use register numbers. * sysdeps/aarch64/start.S (_start): Ditto. * sysdeps/aarch64/nptl/bits/pthreadtypes.h (__PTHREAD_RWLOCK_INT_FLAGS_SHARED): New define. (__SIZEOF_PTHREAD_ATTR_T, __SIZEOF_PTHREAD_MUTEX_T, __SIZEOF_PTHREAD_MUTEXATTR_T, __SIZEOF_PTHREAD_COND_T, __SIZEOF_PTHREAD_COND_COMPAT_T, __SIZEOF_PTHREAD_CONDATTR_T, __SIZEOF_PTHREAD_RWLOCK_T, __SIZEOF_PTHREAD_RWLOCKATTR_T, __SIZEOF_PTHREAD_BARRIER_T, __SIZEOF_PTHREAD_BARRIERATTR_T): Make defined values dependent on __ILP32__. * sysdeps/aarch64/nptl/bits/semaphore.h (__SIZEOF_SEM_T): Change define. (sem_t): Change __align type. * sysdeps/aarch64/sysdep.h (AARCH64_R, PTR_REG, PTR_LOG_SIZE, DELOUSE, PTR_SIZE): New Macros. (LDST_PCREL, LDST_GLOBAL) Update to use PTR_REG. * sysdeps/unix/sysv/linux/aarch64/bits/fcntl.h (O_LARGEFILE): Set when in ILP32 mode. (F_GETLK64, F_SETLK64, F_SETLKW64): Only set in LP64 mode. * sysdeps/unix/sysv/linux/aarch64/dl-cache.h (DL_CACHE_DEFAULT_ID): Set elf flags for ILP32. (add_system_dir): Set ILP32 library directories. * sysdeps/unix/sysv/linux/aarch64/init-first.c (_libc_vdso_platform_setup): Set minimum kernel version for ILP32. * sysdeps/unix/sysv/linux/aarch64/ldconfig.h (SYSDEP_KNOWN_INTERPRETER_NAMES): Add ILP32 names. * sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h (GET_PC, SET_PC): New Macros. * sysdeps/unix/sysv/linux/aarch64/sysdep.h: Handle ILP32 pointers.
102 lines
2.7 KiB
ArmAsm
102 lines
2.7 KiB
ArmAsm
/* Modify saved context.
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Copyright (C) 2009-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include "ucontext_i.h"
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#include "ucontext-internal.h"
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/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */
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.text
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ENTRY(__swapcontext)
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DELOUSE (0)
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/* Set the value returned when swapcontext() returns in this context. */
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str xzr, [x0, oX0 + 0 * SZREG]
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stp x18, x19, [x0, oX0 + 18 * SZREG]
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stp x20, x21, [x0, oX0 + 20 * SZREG]
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stp x22, x23, [x0, oX0 + 22 * SZREG]
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stp x24, x25, [x0, oX0 + 24 * SZREG]
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stp x26, x27, [x0, oX0 + 26 * SZREG]
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stp x28, x29, [x0, oX0 + 28 * SZREG]
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str x30, [x0, oX0 + 30 * SZREG]
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str x30, [x0, oPC]
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mov x2, sp
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str x2, [x0, oSP]
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/* Figure out where to place the first context extension
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block. */
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add x2, x0, #oEXTENSION
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/* Write the context extension fpsimd header. */
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mov w3, #(FPSIMD_MAGIC & 0xffff)
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movk w3, #(FPSIMD_MAGIC >> 16), lsl #16
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str w3, [x2, #oHEAD + oMAGIC]
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mov w3, #FPSIMD_CONTEXT_SIZE
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str w3, [x2, #oHEAD + oSIZE]
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/* Fill in the FP SIMD context. */
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add x3, x2, #oV0 + 8 * SZVREG
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stp q8, q9, [x3], #2 * SZVREG
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stp q10, q11, [x3], #2 * SZVREG
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stp q12, q13, [x3], #2 * SZVREG
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stp q14, q15, [x3], #2 * SZVREG
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add x3, x2, #oFPSR
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mrs x4, fpsr
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str w4, [x3, #oFPSR - oFPSR]
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mrs x4, fpcr
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str w4, [x3, #oFPCR - oFPSR]
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/* Write the termination context extension header. */
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add x2, x2, #FPSIMD_CONTEXT_SIZE
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str xzr, [x2, #oHEAD + oMAGIC]
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str xzr, [x2, #oHEAD + oSIZE]
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/* Preserve ucp. */
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mov x21, x1
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/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask,
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_NSIG8) */
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/* Grab the signal mask */
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/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
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add x2, x0, #UCONTEXT_SIGMASK
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mov x0, SIG_BLOCK
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mov x1, 0
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mov x3, _NSIG8
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mov x8, SYS_ify (rt_sigprocmask)
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svc 0
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cbnz x0, 1f
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mov x22, x30
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mov x0, x21
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bl JUMPTARGET (__setcontext)
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mov x30, x22
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RET
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1:
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b C_SYMBOL_NAME(__syscall_error)
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PSEUDO_END (__swapcontext)
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weak_alias (__swapcontext, swapcontext)
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