RISC-V: Linux ABI
Linux-specific code that is required for maintaining ABI compatibility.
This doesn't contain the actual system call interface, that is split out
in order to avoid having a patch that's too big.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/nptl/pthread-offsets.h: New file.
* sysdeps/riscv/nptl/pthreaddef.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/bits/fcntl.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/bits/mman.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/dl-cache.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/flush-icache.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/libc-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/makecontext.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/readelflib.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/register-dump.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/setcontext.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/swapcontext.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/sys/cachectl.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/sys/procfs.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/sys/user.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/ucontext-macros.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/ucontext_i.sym: Likewise.
This commit is contained in:
Palmer Dabbelt
parent
36960f0c76
commit
7f33b09c65
22
ChangeLog
22
ChangeLog
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@ -105,6 +105,28 @@
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* sysdeps/unix/sysv/linux/riscv/sysdep.S: Likewise.
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* sysdeps/unix/sysv/linux/riscv/sysdep.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/vfork.S: Likewise.
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* sysdeps/riscv/nptl/pthread-offsets.h: New file.
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* sysdeps/riscv/nptl/pthreaddef.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/bits/fcntl.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/bits/mman.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/dl-cache.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/flush-icache.c: Likewise.
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* sysdeps/unix/sysv/linux/riscv/getcontext.S: Likewise.
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* sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise.
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* sysdeps/unix/sysv/linux/riscv/libc-vdso.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/makecontext.c: Likewise.
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* sysdeps/unix/sysv/linux/riscv/readelflib.c: Likewise.
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* sysdeps/unix/sysv/linux/riscv/register-dump.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/setcontext.S: Likewise.
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* sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/swapcontext.S: Likewise.
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* sysdeps/unix/sysv/linux/riscv/sys/cachectl.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/sys/procfs.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/sys/ucontext.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/sys/user.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/ucontext-macros.h: Likewise.
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* sysdeps/unix/sysv/linux/riscv/ucontext_i.sym: Likewise.
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2018-01-29 Florian Weimer <fweimer@redhat.com>
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@ -0,0 +1,24 @@
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/* RISC-V pthread offsets
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Copyright (C) 2017-2018 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
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||||
License as published by the Free Software Foundation; either
|
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version 2.1 of the License, or (at your option) any later version.
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|
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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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#define __PTHREAD_MUTEX_NUSERS_OFFSET 12
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#define __PTHREAD_MUTEX_KIND_OFFSET 16
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#define __PTHREAD_MUTEX_SPINS_OFFSET 20
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#define __PTHREAD_MUTEX_ELISION_OFFSET 22
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#define __PTHREAD_MUTEX_LIST_OFFSET 24
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@ -0,0 +1,32 @@
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/* pthread machine parameter definitions, RISC-V version.
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Copyright (C) 2011-2018 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
|
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License as published by the Free Software Foundation; either
|
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version 2.1 of the License, or (at your option) any later version.
|
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|
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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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/* Default stack size. */
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#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
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/* Required stack pointer alignment at beginning. */
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#define STACK_ALIGN 16
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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/* Alignment requirement for TCB. */
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#define TCB_ALIGNMENT 16
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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@ -0,0 +1,62 @@
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/* O_*, F_*, FD_* bit values for Linux / RISC-V.
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Copyright (C) 2011-2018 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
|
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License as published by the Free Software Foundation; either
|
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version 2.1 of the License, or (at your option) any later version.
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|
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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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|
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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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#ifndef _FCNTL_H
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# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
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#endif
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#include <bits/wordsize.h>
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/* In 64-bit ISA files are always with 64bit off_t and F_*LK64 are the same as
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non-64-bit versions. It will need to be revised for 128-bit. */
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#if __WORDSIZE == 64
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# define __O_LARGEFILE 0
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# define F_GETLK64 5 /* Get record locking info. */
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# define F_SETLK64 6 /* Set record locking info (non-blocking). */
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# define F_SETLKW64 7 /* Set record locking info (blocking). */
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#endif
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struct flock
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{
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short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
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short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
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#if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
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__off_t l_start; /* Offset where the lock begins. */
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__off_t l_len; /* Size of the locked area; zero means until EOF. */
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#else
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__off64_t l_start; /* Offset where the lock begins. */
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__off64_t l_len; /* Size of the locked area; zero means until EOF. */
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#endif
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__pid_t l_pid; /* Process holding the lock. */
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};
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#ifdef __USE_LARGEFILE64
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struct flock64
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{
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short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
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short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
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__off64_t l_start; /* Offset where the lock begins. */
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__off64_t l_len; /* Size of the locked area; zero means until EOF. */
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__pid_t l_pid; /* Process holding the lock. */
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};
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#endif
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/* Include generic Linux declarations. */
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#include <bits/fcntl-linux.h>
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@ -0,0 +1,36 @@
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/* Definitions for POSIX memory map interface. Linux/RISC-V version.
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Copyright (C) 1997-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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|
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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 published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
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|
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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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|
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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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#ifndef _SYS_MMAN_H
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# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
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#endif
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#ifdef __USE_MISC
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# define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */
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# define MAP_DENYWRITE 0x00800 /* ETXTBSY. */
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# define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */
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# define MAP_LOCKED 0x02000 /* Lock the mapping. */
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# define MAP_NORESERVE 0x04000 /* Don't check for reservations. */
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# define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */
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# define MAP_NONBLOCK 0x10000 /* Do not block on IO. */
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# define MAP_STACK 0x20000 /* Allocation is for a stack. */
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# define MAP_HUGETLB 0x40000 /* Create huge page mapping. */
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#endif
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/* Include generic Linux declarations. */
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#include <bits/mman-linux.h>
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/* Machine-dependent signal context structure for Linux. RISC-V version.
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Copyright (C) 1996-2018 Free Software
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Foundation, Inc. This file is part of the GNU C Library.
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|
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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 published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
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|
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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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|
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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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#ifndef _BITS_SIGCONTEXT_H
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#define _BITS_SIGCONTEXT_H 1
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#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
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# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
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#endif
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struct sigcontext {
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/* gregs[0] holds the program counter. */
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unsigned long int gregs[32];
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unsigned long long int fpregs[66] __attribute__ ((__aligned__ (16)));
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};
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#endif
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@ -0,0 +1,75 @@
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/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
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Copyright (C) 2003-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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|
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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 published by the Free Software Foundation; either
|
||||
version 2.1 of the 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
|
||||
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
|
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<http://www.gnu.org/licenses/>. */
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#include <ldconfig.h>
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/* For now we only support the natural XLEN ABI length on all targets, so the
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only bits that need to go into ld.so.cache are the FLEG ABI length. */
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#if defined __riscv_float_abi_double
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# define _DL_CACHE_DEFAULT_ID (FLAG_RISCV_FLOAT_ABI_DOUBLE | FLAG_ELF_LIBC6)
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#else
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# define _DL_CACHE_DEFAULT_ID (FLAG_RISCV_FLOAT_ABI_SOFT | FLAG_ELF_LIBC6)
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#endif
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#define _dl_cache_check_flags(flags) \
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((flags) == _DL_CACHE_DEFAULT_ID)
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/* If given a path to one of our library directories, adds every library
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directory via add_dir (), otherwise just adds the giver directory. On
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RISC-V, libraries can be found in paths ending in:
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- /lib64/lp64d
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- /lib64/lp64
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- /lib (only ld.so)
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so this will add all of those paths.
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|
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According to Joseph Myers:
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My reasoning for that would be: generic autoconf-configured (etc.)
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software may only know about using the lib directory, so you want the
|
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lib directory to be searched regardless of the ABI - but it's also
|
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useful to be able to e.g. list /usr/local/lib in /etc/ld.so.conf for all
|
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architectures and have that automatically imply /usr/local/lib64/lp64d
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etc. so that libraries can be found that come from software that does
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use the ABI-specific directories. */
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#define add_system_dir(dir) \
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do \
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{ \
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size_t len = strlen (dir); \
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char path[len + 9]; \
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memcpy (path, dir, len + 1); \
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if (len >= 12 && ! memcmp(path + len - 12, "/lib64/lp64d", 12)) \
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{ \
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len -= 8; \
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path[len] = '\0'; \
|
||||
} \
|
||||
if (len >= 11 && ! memcmp(path + len - 11, "/lib64/lp64", 11)) \
|
||||
{ \
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len -= 7; \
|
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path[len] = '\0'; \
|
||||
} \
|
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add_dir (path); \
|
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if (len >= 4 && ! memcmp(path + len - 4, "/lib", 4)) \
|
||||
{ \
|
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memcpy (path + len, "64/lp64d", 9); \
|
||||
add_dir (path); \
|
||||
memcpy (path + len, "64/lp64", 8); \
|
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add_dir (path); \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
|
||||
#include_next <dl-cache.h>
|
||||
|
|
@ -0,0 +1,73 @@
|
|||
/* RISC-V instruction cache flushing VDSO calls
|
||||
Copyright (C) 2017-2018 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 <dl-vdso.h>
|
||||
#include <stdlib.h>
|
||||
#include <atomic.h>
|
||||
#include <sys/cachectl.h>
|
||||
#include <asm/syscalls.h>
|
||||
|
||||
typedef int (*func_type) (void *, void *, unsigned long int);
|
||||
|
||||
static int
|
||||
__riscv_flush_icache_syscall (void *start, void *end, unsigned long int flags)
|
||||
{
|
||||
return INLINE_SYSCALL (riscv_flush_icache, 3, start, end, flags);
|
||||
}
|
||||
|
||||
static func_type
|
||||
__lookup_riscv_flush_icache (void)
|
||||
{
|
||||
PREPARE_VERSION_KNOWN (linux_version, LINUX_4_15);
|
||||
|
||||
func_type func = _dl_vdso_vsym ("__vdso_flush_icache", &linux_version);
|
||||
|
||||
/* If there is no vDSO entry then call the system call directly. All Linux
|
||||
versions provide the vDSO entry, but QEMU's user-mode emulation doesn't
|
||||
provide a vDSO. */
|
||||
if (!func)
|
||||
func = &__riscv_flush_icache_syscall;
|
||||
|
||||
return func;
|
||||
}
|
||||
|
||||
#ifdef SHARED
|
||||
|
||||
# define INIT_ARCH()
|
||||
libc_ifunc (__riscv_flush_icache, __lookup_riscv_flush_icache ())
|
||||
|
||||
#else
|
||||
|
||||
int
|
||||
__riscv_flush_icache (void *start, void *end, unsigned long int flags)
|
||||
{
|
||||
static volatile func_type cached_func;
|
||||
|
||||
func_type func = atomic_load_relaxed (&cached_func);
|
||||
|
||||
if (!func)
|
||||
{
|
||||
func = __lookup_riscv_flush_icache ();
|
||||
atomic_store_relaxed (&cached_func, func);
|
||||
}
|
||||
|
||||
return func (start, end, flags);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,77 @@
|
|||
/* Save current context.
|
||||
Copyright (C) 2009-2018 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 "ucontext-macros.h"
|
||||
|
||||
/* int getcontext (ucontext_t *ucp) */
|
||||
|
||||
.text
|
||||
LEAF (__getcontext)
|
||||
SAVE_INT_REG (ra, 0, a0)
|
||||
SAVE_INT_REG (ra, 1, a0)
|
||||
SAVE_INT_REG (sp, 2, a0)
|
||||
SAVE_INT_REG (s0, 8, a0)
|
||||
SAVE_INT_REG (s1, 9, a0)
|
||||
SAVE_INT_REG (x0, 10, a0) /* return 0 by overwriting a0. */
|
||||
SAVE_INT_REG (s2, 18, a0)
|
||||
SAVE_INT_REG (s3, 19, a0)
|
||||
SAVE_INT_REG (s4, 20, a0)
|
||||
SAVE_INT_REG (s5, 21, a0)
|
||||
SAVE_INT_REG (s6, 22, a0)
|
||||
SAVE_INT_REG (s7, 23, a0)
|
||||
SAVE_INT_REG (s8, 24, a0)
|
||||
SAVE_INT_REG (s9, 25, a0)
|
||||
SAVE_INT_REG (s10, 26, a0)
|
||||
SAVE_INT_REG (s11, 27, a0)
|
||||
|
||||
#ifndef __riscv_float_abi_soft
|
||||
frsr a1
|
||||
|
||||
SAVE_FP_REG (fs0, 8, a0)
|
||||
SAVE_FP_REG (fs1, 9, a0)
|
||||
SAVE_FP_REG (fs2, 18, a0)
|
||||
SAVE_FP_REG (fs3, 19, a0)
|
||||
SAVE_FP_REG (fs4, 20, a0)
|
||||
SAVE_FP_REG (fs5, 21, a0)
|
||||
SAVE_FP_REG (fs6, 22, a0)
|
||||
SAVE_FP_REG (fs7, 23, a0)
|
||||
SAVE_FP_REG (fs8, 24, a0)
|
||||
SAVE_FP_REG (fs9, 25, a0)
|
||||
SAVE_FP_REG (fs10, 26, a0)
|
||||
SAVE_FP_REG (fs11, 27, a0)
|
||||
|
||||
sw a1, MCONTEXT_FSR(a0)
|
||||
#endif /* __riscv_float_abi_soft */
|
||||
|
||||
/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
|
||||
li a3, _NSIG8
|
||||
add a2, a0, UCONTEXT_SIGMASK
|
||||
mv a1, zero
|
||||
li a0, SIG_BLOCK
|
||||
|
||||
li a7, SYS_ify (rt_sigprocmask)
|
||||
scall
|
||||
bltz a0, 99f
|
||||
|
||||
ret
|
||||
|
||||
99: j __syscall_error
|
||||
|
||||
PSEUDO_END (__getcontext)
|
||||
|
||||
weak_alias (__getcontext, getcontext)
|
||||
|
|
@ -0,0 +1,58 @@
|
|||
/* RISC-V VDSO initialization
|
||||
Copyright (C) 2017-2018 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/>. */
|
||||
|
||||
#ifdef SHARED
|
||||
# include <dl-vdso.h>
|
||||
# include <libc-vdso.h>
|
||||
|
||||
long int (*VDSO_SYMBOL (getcpu)) (unsigned int *, unsigned int *, void *)
|
||||
attribute_hidden;
|
||||
long int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
|
||||
attribute_hidden;
|
||||
long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
|
||||
attribute_hidden;
|
||||
long int (*VDSO_SYMBOL (clock_getres)) (clockid_t, struct timespec *)
|
||||
attribute_hidden;
|
||||
|
||||
static inline void
|
||||
_libc_vdso_platform_setup (void)
|
||||
{
|
||||
PREPARE_VERSION_KNOWN (linux_version, LINUX_4_15);
|
||||
|
||||
void *p = _dl_vdso_vsym ("__vdso_getcpu", &linux_version);
|
||||
PTR_MANGLE (p);
|
||||
VDSO_SYMBOL (getcpu) = p;
|
||||
|
||||
p = _dl_vdso_vsym ("__vdso_gettimeofday", &linux_version);
|
||||
PTR_MANGLE (p);
|
||||
VDSO_SYMBOL (gettimeofday) = p;
|
||||
|
||||
p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux_version);
|
||||
PTR_MANGLE (p);
|
||||
VDSO_SYMBOL (clock_gettime) = p;
|
||||
|
||||
p = _dl_vdso_vsym ("__vdso_clock_getres", &linux_version);
|
||||
PTR_MANGLE (p);
|
||||
VDSO_SYMBOL (clock_getres) = p;
|
||||
}
|
||||
|
||||
# define VDSO_SETUP _libc_vdso_platform_setup
|
||||
#endif
|
||||
|
||||
#include <csu/init-first.c>
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
/* RISC-V VDSO function declarations
|
||||
Copyright (C) 2017-2018 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/>. */
|
||||
|
||||
#ifndef _LIBC_VDSO_H
|
||||
#define _LIBC_VDSO_H
|
||||
|
||||
#ifdef SHARED
|
||||
|
||||
# include <sysdep-vdso.h>
|
||||
|
||||
extern long int (*VDSO_SYMBOL (getcpu)) (unsigned int *, unsigned int *, void *)
|
||||
attribute_hidden;
|
||||
extern long int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
|
||||
attribute_hidden;
|
||||
extern long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
|
||||
attribute_hidden;
|
||||
extern long int (*VDSO_SYMBOL (clock_getres)) (clockid_t, struct timespec *)
|
||||
attribute_hidden;
|
||||
|
||||
#endif
|
||||
|
||||
#endif /* _LIBC_VDSO_H */
|
||||
|
|
@ -0,0 +1,78 @@
|
|||
/* Create new context. RISC-V version.
|
||||
Copyright (C) 2001-2018 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 <sys/asm.h>
|
||||
#include <sys/ucontext.h>
|
||||
#include <stdarg.h>
|
||||
#include <assert.h>
|
||||
|
||||
void
|
||||
__makecontext (ucontext_t *ucp, void (*func) (void), int argc,
|
||||
long int a0, long int a1, long int a2, long int a3, long int a4,
|
||||
...)
|
||||
{
|
||||
extern void __start_context (void) attribute_hidden;
|
||||
long int i, sp;
|
||||
|
||||
_Static_assert (REG_NARGS == 8, "__makecontext assumes 8 argument registers");
|
||||
|
||||
/* Set up the stack. */
|
||||
sp = ((long int) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & ALMASK;
|
||||
|
||||
/* Set up the register context.
|
||||
ra = s0 = 0, terminating the stack for backtracing purposes.
|
||||
s1 = the function we must call.
|
||||
s2 = the subsequent context to run. */
|
||||
ucp->uc_mcontext.__gregs[REG_RA] = 0;
|
||||
ucp->uc_mcontext.__gregs[REG_S0] = 0;
|
||||
ucp->uc_mcontext.__gregs[REG_S1] = (long int) func;
|
||||
ucp->uc_mcontext.__gregs[REG_S2] = (long int) ucp->uc_link;
|
||||
ucp->uc_mcontext.__gregs[REG_SP] = sp;
|
||||
ucp->uc_mcontext.__gregs[REG_PC] = (long int) &__start_context;
|
||||
|
||||
/* Put args in a0-a7, then put any remaining args on the stack. */
|
||||
ucp->uc_mcontext.__gregs[REG_A0 + 0] = a0;
|
||||
ucp->uc_mcontext.__gregs[REG_A0 + 1] = a1;
|
||||
ucp->uc_mcontext.__gregs[REG_A0 + 2] = a2;
|
||||
ucp->uc_mcontext.__gregs[REG_A0 + 3] = a3;
|
||||
ucp->uc_mcontext.__gregs[REG_A0 + 4] = a4;
|
||||
|
||||
if (__glibc_unlikely (argc > 5))
|
||||
{
|
||||
va_list vl;
|
||||
va_start (vl, a4);
|
||||
|
||||
long reg_args = argc < REG_NARGS ? argc : REG_NARGS;
|
||||
for (i = 5; i < reg_args; i++)
|
||||
ucp->uc_mcontext.__gregs[REG_A0 + i] = va_arg (vl, long);
|
||||
|
||||
long int stack_args = argc - reg_args;
|
||||
if (stack_args > 0)
|
||||
{
|
||||
sp = (sp - stack_args * sizeof (long int)) & ALMASK;
|
||||
ucp->uc_mcontext.__gregs[REG_SP] = sp;
|
||||
for (i = 0; i < stack_args; i++)
|
||||
((long int *) sp)[i] = va_arg (vl, long int);
|
||||
}
|
||||
|
||||
va_end (vl);
|
||||
}
|
||||
}
|
||||
|
||||
weak_alias (__makecontext, makecontext)
|
||||
|
|
@ -0,0 +1,96 @@
|
|||
/* Support for reading ELF files.
|
||||
Copyright (C) 1999-2018 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/>. */
|
||||
|
||||
|
||||
int process_elf32_file (const char *file_name, const char *lib, int *flag,
|
||||
unsigned int *osversion, char **soname,
|
||||
void *file_contents, size_t file_length);
|
||||
int process_elf64_file (const char *file_name, const char *lib, int *flag,
|
||||
unsigned int *osversion, char **soname,
|
||||
void *file_contents, size_t file_length);
|
||||
|
||||
/* The ELF flags supported by our current glibc port:
|
||||
- EF_RISCV_FLOAT_ABI: We support the soft and double ABIs.
|
||||
- EF_RISCV_RVC: While the Linux ABI mandates the presence of the C
|
||||
extension, we can still support libraries compiled without that extension
|
||||
so we just ignore this flag.
|
||||
- EF_RISCV_RVE: glibc (and Linux) don't support RV32E based systems.
|
||||
- EF_RISCV_TSO: The TSO extension isn't supported, as doing so would require
|
||||
some mechanism to ensure that the TSO extension is enabled which doesn't
|
||||
currently exist. */
|
||||
#define SUPPORTED_ELF_FLAGS (EF_RISCV_FLOAT_ABI | EF_RISCV_RVC)
|
||||
|
||||
/* Returns 0 if everything is ok, != 0 in case of error. */
|
||||
int
|
||||
process_elf_file (const char *file_name, const char *lib, int *flag,
|
||||
unsigned int *osversion, char **soname, void *file_contents,
|
||||
size_t file_length)
|
||||
{
|
||||
ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
|
||||
Elf32_Ehdr *elf32_header = (Elf32_Ehdr *) elf_header;
|
||||
int ret;
|
||||
long flags;
|
||||
|
||||
/* RISC-V libraries are always libc.so.6+. */
|
||||
*flag = FLAG_ELF_LIBC6;
|
||||
|
||||
if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
|
||||
{
|
||||
ret = process_elf32_file (file_name, lib, flag, osversion, soname,
|
||||
file_contents, file_length);
|
||||
flags = elf32_header->e_flags;
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = process_elf64_file (file_name, lib, flag, osversion, soname,
|
||||
file_contents, file_length);
|
||||
flags = elf32_header->e_flags;
|
||||
}
|
||||
|
||||
/* RISC-V linkers encode the floating point ABI as part of the ELF headers. */
|
||||
switch (flags & EF_RISCV_FLOAT_ABI)
|
||||
{
|
||||
case EF_RISCV_FLOAT_ABI_SOFT:
|
||||
*flag |= FLAG_RISCV_FLOAT_ABI_SOFT;
|
||||
break;
|
||||
case EF_RISCV_FLOAT_ABI_DOUBLE:
|
||||
*flag |= FLAG_RISCV_FLOAT_ABI_DOUBLE;
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* If there are any other ELF flags set then glibc doesn't support this
|
||||
library. */
|
||||
if (flags & ~SUPPORTED_ELF_FLAGS)
|
||||
return 1;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#undef __ELF_NATIVE_CLASS
|
||||
#undef process_elf_file
|
||||
#define process_elf_file process_elf32_file
|
||||
#define __ELF_NATIVE_CLASS 32
|
||||
#include "elf/readelflib.c"
|
||||
|
||||
#undef __ELF_NATIVE_CLASS
|
||||
#undef process_elf_file
|
||||
#define process_elf_file process_elf64_file
|
||||
#define __ELF_NATIVE_CLASS 64
|
||||
#include "elf/readelflib.c"
|
||||
|
|
@ -0,0 +1,63 @@
|
|||
/* Dump registers.
|
||||
Copyright (C) 2000-2018 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 <unistd.h>
|
||||
#include <string.h>
|
||||
#include <_itoa.h>
|
||||
|
||||
static void
|
||||
hexvalue (unsigned long int value, char *buf, size_t len)
|
||||
{
|
||||
char *cp = _itoa_word (value, buf + len, 16, 0);
|
||||
while (cp > buf)
|
||||
*--cp = '0';
|
||||
}
|
||||
|
||||
#define REGDUMP_NREGS 32
|
||||
#define REGDUMP_PER_LINE (80 / (__WORDSIZE / 4 + 4))
|
||||
|
||||
static void
|
||||
register_dump (int fd, ucontext_t *ctx)
|
||||
{
|
||||
int i;
|
||||
char regvalue[__WORDSIZE / 4 + 1];
|
||||
char str[82 * ((REGDUMP_NREGS + REGDUMP_PER_LINE - 1) / REGDUMP_PER_LINE)];
|
||||
|
||||
static const char names[REGDUMP_NREGS][4] = {
|
||||
"pc", "ra", "sp", "gp", "tp", "t0", "t1", "t2",
|
||||
"s0", "s1", "a0", "a1", "a2", "a3", "a4", "a5",
|
||||
"a6", "a7", "s2", "s3", "s4", "s5", "s6", "s7",
|
||||
"s8", "s9", "sA", "sB", "t3", "t4", "t5", "t6"
|
||||
};
|
||||
|
||||
str[0] = 0;
|
||||
for (i = 0; i < REGDUMP_NREGS; i++)
|
||||
{
|
||||
strcat (str, names[i]);
|
||||
strcat (str, " ");
|
||||
hexvalue (ctx->uc_mcontext.__gregs[i], regvalue, __WORDSIZE / 4);
|
||||
strcat (str, regvalue);
|
||||
|
||||
if ((i + 1) % REGDUMP_PER_LINE == 0)
|
||||
strcat (str, "\n");
|
||||
}
|
||||
|
||||
write (fd, str, strlen (str));
|
||||
}
|
||||
|
||||
#define REGISTER_DUMP register_dump (fd, ctx)
|
||||
|
|
@ -0,0 +1,53 @@
|
|||
/* jump buffer constants for RISC-V
|
||||
Copyright (C) 2017-2018 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/>. */
|
||||
|
||||
/* Produced by this program:
|
||||
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include <setjmp.h>
|
||||
#include <stddef.h>
|
||||
|
||||
int main (int argc, char **argv)
|
||||
{
|
||||
printf ("#define JMP_BUF_SIZE %d\n", sizeof (jmp_buf));
|
||||
printf ("#define JMP_BUF_ALIGN %d\n", __alignof__ (jmp_buf));
|
||||
printf ("#define SIGJMP_BUF_SIZE %d\n", sizeof (sigjmp_buf));
|
||||
printf ("#define SIGJMP_BUF_ALIGN %d\n", __alignof__ (sigjmp_buf));
|
||||
printf ("#define MASK_WAS_SAVED_OFFSET %d\n", offsetof (struct __jmp_buf_tag, __mask_was_saved));
|
||||
printf ("#define SAVED_MASK_OFFSET %d\n", offsetof (struct __jmp_buf_tag, __saved_mask));
|
||||
} */
|
||||
|
||||
#if defined __riscv_float_abi_soft
|
||||
# define JMP_BUF_SIZE 248
|
||||
# define JMP_BUF_ALIGN 8
|
||||
# define SIGJMP_BUF_SIZE 248
|
||||
# define SIGJMP_BUF_ALIGN 8
|
||||
# define MASK_WAS_SAVED_OFFSET 112
|
||||
# define SAVED_MASK_OFFSET 120
|
||||
#elif defined __riscv_float_abi_double
|
||||
# define JMP_BUF_SIZE 344
|
||||
# define JMP_BUF_ALIGN 8
|
||||
# define SIGJMP_BUF_SIZE 344
|
||||
# define SIGJMP_BUF_ALIGN 8
|
||||
# define MASK_WAS_SAVED_OFFSET 208
|
||||
# define SAVED_MASK_OFFSET 216
|
||||
#else
|
||||
# error "Unknown RISC-V floating-point ABI"
|
||||
#endif
|
||||
|
|
@ -0,0 +1,114 @@
|
|||
/* Set current context.
|
||||
Copyright (C) 2009-2018 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 "ucontext-macros.h"
|
||||
|
||||
/* int __setcontext (const ucontext_t *ucp)
|
||||
|
||||
Restores the machine context in UCP and thereby resumes execution
|
||||
in that context.
|
||||
|
||||
This implementation is intended to be used for *synchronous* context
|
||||
switches only. Therefore, it does not have to restore anything
|
||||
other than the PRESERVED state. */
|
||||
|
||||
.text
|
||||
LEAF (__setcontext)
|
||||
|
||||
mv t0, a0 /* Save ucp into t0. */
|
||||
|
||||
/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, NULL, _NSIG8) */
|
||||
li a3, _NSIG8
|
||||
mv a2, zero
|
||||
add a1, a0, UCONTEXT_SIGMASK
|
||||
li a0, SIG_SETMASK
|
||||
|
||||
li a7, SYS_ify (rt_sigprocmask)
|
||||
scall
|
||||
|
||||
bltz a0, 99f
|
||||
|
||||
cfi_def_cfa (t0, 0)
|
||||
|
||||
#ifndef __riscv_float_abi_soft
|
||||
lw t1, MCONTEXT_FSR(t0)
|
||||
|
||||
RESTORE_FP_REG_CFI (fs0, 8, t0)
|
||||
RESTORE_FP_REG_CFI (fs1, 9, t0)
|
||||
RESTORE_FP_REG_CFI (fs2, 18, t0)
|
||||
RESTORE_FP_REG_CFI (fs3, 19, t0)
|
||||
RESTORE_FP_REG_CFI (fs4, 20, t0)
|
||||
RESTORE_FP_REG_CFI (fs5, 21, t0)
|
||||
RESTORE_FP_REG_CFI (fs6, 22, t0)
|
||||
RESTORE_FP_REG_CFI (fs7, 23, t0)
|
||||
RESTORE_FP_REG_CFI (fs8, 24, t0)
|
||||
RESTORE_FP_REG_CFI (fs9, 25, t0)
|
||||
RESTORE_FP_REG_CFI (fs10, 26, t0)
|
||||
RESTORE_FP_REG_CFI (fs11, 27, t0)
|
||||
|
||||
fssr t1
|
||||
#endif /* __riscv_float_abi_soft */
|
||||
|
||||
/* Note the contents of argument registers will be random
|
||||
unless makecontext() has been called. */
|
||||
RESTORE_INT_REG (t1, 0, t0)
|
||||
RESTORE_INT_REG_CFI (ra, 1, t0)
|
||||
RESTORE_INT_REG (sp, 2, t0)
|
||||
RESTORE_INT_REG_CFI (s0, 8, t0)
|
||||
RESTORE_INT_REG_CFI (s1, 9, t0)
|
||||
RESTORE_INT_REG (a0, 10, t0)
|
||||
RESTORE_INT_REG (a1, 11, t0)
|
||||
RESTORE_INT_REG (a2, 12, t0)
|
||||
RESTORE_INT_REG (a3, 13, t0)
|
||||
RESTORE_INT_REG (a4, 14, t0)
|
||||
RESTORE_INT_REG (a5, 15, t0)
|
||||
RESTORE_INT_REG (a6, 16, t0)
|
||||
RESTORE_INT_REG (a7, 17, t0)
|
||||
RESTORE_INT_REG_CFI (s2, 18, t0)
|
||||
RESTORE_INT_REG_CFI (s3, 19, t0)
|
||||
RESTORE_INT_REG_CFI (s4, 20, t0)
|
||||
RESTORE_INT_REG_CFI (s5, 21, t0)
|
||||
RESTORE_INT_REG_CFI (s6, 22, t0)
|
||||
RESTORE_INT_REG_CFI (s7, 23, t0)
|
||||
RESTORE_INT_REG_CFI (s8, 24, t0)
|
||||
RESTORE_INT_REG_CFI (s9, 25, t0)
|
||||
RESTORE_INT_REG_CFI (s10, 26, t0)
|
||||
RESTORE_INT_REG_CFI (s11, 27, t0)
|
||||
|
||||
jr t1
|
||||
|
||||
99: j __syscall_error
|
||||
|
||||
PSEUDO_END (__setcontext)
|
||||
weak_alias (__setcontext, setcontext)
|
||||
|
||||
LEAF (__start_context)
|
||||
|
||||
/* Terminate call stack by noting ra == 0. Happily, s0 == 0 here. */
|
||||
cfi_register (ra, s0)
|
||||
|
||||
/* Call the function passed to makecontext. */
|
||||
jalr s1
|
||||
|
||||
/* Invoke subsequent context if present, else exit(0). */
|
||||
mv a0, s2
|
||||
beqz s2, 1f
|
||||
jal __setcontext
|
||||
1: j exit
|
||||
|
||||
PSEUDO_END (__start_context)
|
||||
|
|
@ -0,0 +1,28 @@
|
|||
/* RISC-V definitions for signal handling calling conventions.
|
||||
Copyright (C) 2000-2018 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 <sys/ucontext.h>
|
||||
|
||||
#define SIGCONTEXT siginfo_t *_si, ucontext_t *
|
||||
#define SIGCONTEXT_EXTRA_ARGS _si,
|
||||
#define GET_PC(ctx) ((void *) ctx->uc_mcontext.__gregs[REG_PC])
|
||||
#define GET_FRAME(ctx) ((void *) ctx->uc_mcontext.__gregs[REG_S0])
|
||||
#define GET_STACK(ctx) ((void *) ctx->uc_mcontext.__gregs[REG_SP])
|
||||
|
||||
#define CALL_SIGHANDLER(handler, signo, ctx) \
|
||||
(handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
|
||||
|
|
@ -0,0 +1,125 @@
|
|||
/* Save and set current context.
|
||||
Copyright (C) 2009-2018 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 "ucontext-macros.h"
|
||||
|
||||
/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */
|
||||
|
||||
LEAF (__swapcontext)
|
||||
mv t0, a1 /* Save ucp into t0. */
|
||||
|
||||
SAVE_INT_REG (ra, 0, a0)
|
||||
SAVE_INT_REG (ra, 1, a0)
|
||||
SAVE_INT_REG (sp, 2, a0)
|
||||
SAVE_INT_REG (s0, 8, a0)
|
||||
SAVE_INT_REG (s1, 9, a0)
|
||||
SAVE_INT_REG (x0, 10, a0) /* return 0 by overwriting a0. */
|
||||
SAVE_INT_REG (s2, 18, a0)
|
||||
SAVE_INT_REG (s3, 19, a0)
|
||||
SAVE_INT_REG (s4, 20, a0)
|
||||
SAVE_INT_REG (s5, 21, a0)
|
||||
SAVE_INT_REG (s6, 22, a0)
|
||||
SAVE_INT_REG (s7, 23, a0)
|
||||
SAVE_INT_REG (s8, 24, a0)
|
||||
SAVE_INT_REG (s9, 25, a0)
|
||||
SAVE_INT_REG (s10, 26, a0)
|
||||
SAVE_INT_REG (s11, 27, a0)
|
||||
|
||||
#ifndef __riscv_float_abi_soft
|
||||
frsr a1
|
||||
|
||||
SAVE_FP_REG (fs0, 8, a0)
|
||||
SAVE_FP_REG (fs1, 9, a0)
|
||||
SAVE_FP_REG (fs2, 18, a0)
|
||||
SAVE_FP_REG (fs3, 19, a0)
|
||||
SAVE_FP_REG (fs4, 20, a0)
|
||||
SAVE_FP_REG (fs5, 21, a0)
|
||||
SAVE_FP_REG (fs6, 22, a0)
|
||||
SAVE_FP_REG (fs7, 23, a0)
|
||||
SAVE_FP_REG (fs8, 24, a0)
|
||||
SAVE_FP_REG (fs9, 25, a0)
|
||||
SAVE_FP_REG (fs10, 26, a0)
|
||||
SAVE_FP_REG (fs11, 27, a0)
|
||||
|
||||
sw a1, MCONTEXT_FSR(a0)
|
||||
#endif /* __riscv_float_abi_soft */
|
||||
|
||||
/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */
|
||||
li a3, _NSIG8
|
||||
add a2, a0, UCONTEXT_SIGMASK
|
||||
add a1, t0, UCONTEXT_SIGMASK
|
||||
li a0, SIG_SETMASK
|
||||
|
||||
li a7, SYS_ify (rt_sigprocmask)
|
||||
scall
|
||||
|
||||
bltz a0, 99f
|
||||
|
||||
#ifndef __riscv_float_abi_soft
|
||||
lw t1, MCONTEXT_FSR(t0)
|
||||
|
||||
RESTORE_FP_REG (fs0, 8, t0)
|
||||
RESTORE_FP_REG (fs1, 9, t0)
|
||||
RESTORE_FP_REG (fs2, 18, t0)
|
||||
RESTORE_FP_REG (fs3, 19, t0)
|
||||
RESTORE_FP_REG (fs4, 20, t0)
|
||||
RESTORE_FP_REG (fs5, 21, t0)
|
||||
RESTORE_FP_REG (fs6, 22, t0)
|
||||
RESTORE_FP_REG (fs7, 23, t0)
|
||||
RESTORE_FP_REG (fs8, 24, t0)
|
||||
RESTORE_FP_REG (fs9, 25, t0)
|
||||
RESTORE_FP_REG (fs10, 26, t0)
|
||||
RESTORE_FP_REG (fs11, 27, t0)
|
||||
|
||||
fssr t1
|
||||
#endif /* __riscv_float_abi_soft */
|
||||
|
||||
/* Note the contents of argument registers will be random
|
||||
unless makecontext() has been called. */
|
||||
RESTORE_INT_REG (t1, 0, t0)
|
||||
RESTORE_INT_REG (ra, 1, t0)
|
||||
RESTORE_INT_REG (sp, 2, t0)
|
||||
RESTORE_INT_REG (s0, 8, t0)
|
||||
RESTORE_INT_REG (s1, 9, t0)
|
||||
RESTORE_INT_REG (a0, 10, t0)
|
||||
RESTORE_INT_REG (a1, 11, t0)
|
||||
RESTORE_INT_REG (a2, 12, t0)
|
||||
RESTORE_INT_REG (a3, 13, t0)
|
||||
RESTORE_INT_REG (a4, 14, t0)
|
||||
RESTORE_INT_REG (a5, 15, t0)
|
||||
RESTORE_INT_REG (a6, 16, t0)
|
||||
RESTORE_INT_REG (a7, 17, t0)
|
||||
RESTORE_INT_REG (s2, 18, t0)
|
||||
RESTORE_INT_REG (s3, 19, t0)
|
||||
RESTORE_INT_REG (s4, 20, t0)
|
||||
RESTORE_INT_REG (s5, 21, t0)
|
||||
RESTORE_INT_REG (s6, 22, t0)
|
||||
RESTORE_INT_REG (s7, 23, t0)
|
||||
RESTORE_INT_REG (s8, 24, t0)
|
||||
RESTORE_INT_REG (s9, 25, t0)
|
||||
RESTORE_INT_REG (s10, 26, t0)
|
||||
RESTORE_INT_REG (s11, 27, t0)
|
||||
|
||||
jr t1
|
||||
|
||||
|
||||
99: j __syscall_error
|
||||
|
||||
PSEUDO_END (__swapcontext)
|
||||
|
||||
weak_alias (__swapcontext, swapcontext)
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
/* RISC-V instruction cache flushing interface
|
||||
Copyright (C) 2017-2018 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/>. */
|
||||
|
||||
#ifndef _SYS_CACHECTL_H
|
||||
#define _SYS_CACHECTL_H 1
|
||||
|
||||
#include <features.h>
|
||||
|
||||
__BEGIN_DECLS
|
||||
|
||||
extern int __riscv_flush_icache (void *__start, void *__end,
|
||||
unsigned long int __flags);
|
||||
|
||||
__END_DECLS
|
||||
|
||||
#endif /* sys/cachectl.h */
|
||||
|
|
@ -0,0 +1,114 @@
|
|||
/* Core image file related definitions, RISC-V version.
|
||||
Copyright (C) 1996-2018 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/>. */
|
||||
|
||||
#ifndef _SYS_PROCFS_H
|
||||
#define _SYS_PROCFS_H 1
|
||||
|
||||
/* This is somehow modelled after the file of the same name on SysVr4
|
||||
systems. It provides a definition of the core file format for ELF
|
||||
used on Linux. */
|
||||
|
||||
#include <features.h>
|
||||
#include <sys/time.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/user.h>
|
||||
#include <sys/ucontext.h>
|
||||
|
||||
/* ELF register definitions */
|
||||
#define ELF_NGREG NGREG
|
||||
#define ELF_NFPREG NFPREG
|
||||
|
||||
typedef unsigned long int elf_greg_t;
|
||||
typedef unsigned long int elf_gregset_t[32];
|
||||
typedef union __riscv_mc_fp_state elf_fpregset_t;
|
||||
|
||||
__BEGIN_DECLS
|
||||
|
||||
struct elf_siginfo
|
||||
{
|
||||
int si_signo; /* Signal number. */
|
||||
int si_code; /* Extra code. */
|
||||
int si_errno; /* Errno. */
|
||||
};
|
||||
|
||||
|
||||
/* Definitions to generate Intel SVR4-like core files. These mostly
|
||||
have the same names as the SVR4 types with "elf_" tacked on the
|
||||
front to prevent clashes with linux definitions, and the typedef
|
||||
forms have been avoided. This is mostly like the SVR4 structure,
|
||||
but more Linuxy, with things that Linux does not support and which
|
||||
gdb doesn't really use excluded. Fields present but not used are
|
||||
marked with "XXX". */
|
||||
struct elf_prstatus
|
||||
{
|
||||
struct elf_siginfo pr_info; /* Info associated with signal. */
|
||||
short int pr_cursig; /* Current signal. */
|
||||
unsigned long int pr_sigpend; /* Set of pending signals. */
|
||||
unsigned long int pr_sighold; /* Set of held signals. */
|
||||
__pid_t pr_pid;
|
||||
__pid_t pr_ppid;
|
||||
__pid_t pr_pgrp;
|
||||
__pid_t pr_sid;
|
||||
struct timeval pr_utime; /* User time. */
|
||||
struct timeval pr_stime; /* System time. */
|
||||
struct timeval pr_cutime; /* Cumulative user time. */
|
||||
struct timeval pr_cstime; /* Cumulative system time. */
|
||||
elf_gregset_t pr_reg; /* GP registers. */
|
||||
int pr_fpvalid; /* True if math copro being used. */
|
||||
};
|
||||
|
||||
|
||||
#define ELF_PRARGSZ (80) /* Number of chars for args */
|
||||
|
||||
struct elf_prpsinfo
|
||||
{
|
||||
char pr_state; /* Numeric process state. */
|
||||
char pr_sname; /* Char for pr_state. */
|
||||
char pr_zomb; /* Zombie. */
|
||||
char pr_nice; /* Nice val. */
|
||||
unsigned long int pr_flag; /* Flags. */
|
||||
long int pr_uid;
|
||||
long int pr_gid;
|
||||
int pr_pid, pr_ppid, pr_pgrp, pr_sid;
|
||||
/* Lots missing */
|
||||
char pr_fname[16]; /* Filename of executable. */
|
||||
char pr_psargs[ELF_PRARGSZ]; /* Initial part of arg list. */
|
||||
};
|
||||
|
||||
/* The rest of this file provides the types for emulation of the
|
||||
Solaris <proc_service.h> interfaces that should be implemented by
|
||||
users of libthread_db. */
|
||||
|
||||
/* Addresses. */
|
||||
typedef void *psaddr_t;
|
||||
|
||||
/* Register sets. Linux has different names. */
|
||||
typedef elf_gregset_t prgregset_t;
|
||||
typedef elf_fpregset_t prfpregset_t;
|
||||
|
||||
/* We don't have any differences between processes and threads,
|
||||
therefore habe only ine PID type. */
|
||||
typedef __pid_t lwpid_t;
|
||||
|
||||
/* Process status and info. In the end we do provide typedefs for them. */
|
||||
typedef struct elf_prstatus prstatus_t;
|
||||
typedef struct elf_prpsinfo prpsinfo_t;
|
||||
|
||||
__END_DECLS
|
||||
|
||||
#endif /* sys/procfs.h */
|
||||
|
|
@ -0,0 +1,110 @@
|
|||
/* struct ucontext definition, RISC-V version.
|
||||
Copyright (C) 1997-2018 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/>. */
|
||||
|
||||
/* Don't rely on this, the interface is currently messed up and may need to
|
||||
be broken to be fixed. */
|
||||
#ifndef _SYS_UCONTEXT_H
|
||||
#define _SYS_UCONTEXT_H 1
|
||||
|
||||
#include <features.h>
|
||||
|
||||
#include <bits/types/sigset_t.h>
|
||||
#include <bits/types/stack_t.h>
|
||||
|
||||
typedef unsigned long int __riscv_mc_gp_state[32];
|
||||
|
||||
#ifdef __USE_MISC
|
||||
# define NGREG 32
|
||||
|
||||
# define REG_PC 0
|
||||
# define REG_RA 1
|
||||
# define REG_SP 2
|
||||
# define REG_TP 4
|
||||
# define REG_S0 8
|
||||
# define REG_S1 9
|
||||
# define REG_A0 10
|
||||
# define REG_S2 18
|
||||
# define REG_NARGS 8
|
||||
|
||||
typedef unsigned long int greg_t;
|
||||
|
||||
/* Container for all general registers. */
|
||||
typedef __riscv_mc_gp_state gregset_t;
|
||||
|
||||
/* Container for floating-point state. */
|
||||
typedef union __riscv_mc_fp_state fpregset_t;
|
||||
#endif
|
||||
|
||||
struct __riscv_mc_f_ext_state
|
||||
{
|
||||
unsigned int __f[32];
|
||||
unsigned int __fcsr;
|
||||
};
|
||||
|
||||
struct __riscv_mc_d_ext_state
|
||||
{
|
||||
unsigned long long int __f[32];
|
||||
unsigned int __fcsr;
|
||||
};
|
||||
|
||||
struct __riscv_mc_q_ext_state
|
||||
{
|
||||
unsigned long long int __f[64] __attribute__ ((__aligned__ (16)));
|
||||
unsigned int __fcsr;
|
||||
/* Reserved for expansion of sigcontext structure. Currently zeroed
|
||||
upon signal, and must be zero upon sigreturn. */
|
||||
unsigned int __glibc_reserved[3];
|
||||
};
|
||||
|
||||
union __riscv_mc_fp_state
|
||||
{
|
||||
struct __riscv_mc_f_ext_state __f;
|
||||
struct __riscv_mc_d_ext_state __d;
|
||||
struct __riscv_mc_q_ext_state __q;
|
||||
};
|
||||
|
||||
typedef struct mcontext_t
|
||||
{
|
||||
__riscv_mc_gp_state __gregs;
|
||||
union __riscv_mc_fp_state __fpregs;
|
||||
} mcontext_t;
|
||||
|
||||
/* Userlevel context. */
|
||||
typedef struct ucontext_t
|
||||
{
|
||||
unsigned long int __uc_flags;
|
||||
struct ucontext_t *uc_link;
|
||||
stack_t uc_stack;
|
||||
sigset_t uc_sigmask;
|
||||
/* There's some padding here to allow sigset_t to be expanded in the
|
||||
future. Though this is unlikely, other architectures put uc_sigmask
|
||||
at the end of this structure and explicitly state it can be
|
||||
expanded, so we didn't want to box ourselves in here. */
|
||||
char __glibc_reserved[1024 / 8 - sizeof (sigset_t)];
|
||||
/* We can't put uc_sigmask at the end of this structure because we need
|
||||
to be able to expand sigcontext in the future. For example, the
|
||||
vector ISA extension will almost certainly add ISA state. We want
|
||||
to ensure all user-visible ISA state can be saved and restored via a
|
||||
ucontext, so we're putting this at the end in order to allow for
|
||||
infinite extensibility. Since we know this will be extended and we
|
||||
assume sigset_t won't be extended an extreme amount, we're
|
||||
prioritizing this. */
|
||||
mcontext_t uc_mcontext;
|
||||
} ucontext_t;
|
||||
|
||||
#endif /* sys/ucontext.h */
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
/* Copyright (C) 2001-2018 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/>. */
|
||||
|
||||
#ifndef _SYS_USER_H
|
||||
#define _SYS_USER_H 1
|
||||
|
||||
|
||||
|
||||
#endif /* _SYS_USER_H */
|
||||
|
|
@ -0,0 +1,49 @@
|
|||
/* Macros for ucontext routines.
|
||||
Copyright (C) 2017-2018 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/>. */
|
||||
|
||||
#ifndef _LINUX_RISCV_UCONTEXT_MACROS_H
|
||||
#define _LINUX_RISCV_UCONTEXT_MACROS_H
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <sys/asm.h>
|
||||
|
||||
#include "ucontext_i.h"
|
||||
|
||||
#define MCONTEXT_FSR (32 * SZFREG + MCONTEXT_FPREGS)
|
||||
|
||||
#define SAVE_FP_REG(name, num, base) \
|
||||
FREG_S name, ((num) * SZFREG + MCONTEXT_FPREGS)(base)
|
||||
|
||||
#define RESTORE_FP_REG(name, num, base) \
|
||||
FREG_L name, ((num) * SZFREG + MCONTEXT_FPREGS)(base)
|
||||
|
||||
#define RESTORE_FP_REG_CFI(name, num, base) \
|
||||
RESTORE_FP_REG (name, num, base); \
|
||||
cfi_offset (name, (num) * SZFREG + MCONTEXT_FPREGS)
|
||||
|
||||
#define SAVE_INT_REG(name, num, base) \
|
||||
REG_S name, ((num) * SZREG + MCONTEXT_GREGS)(base)
|
||||
|
||||
#define RESTORE_INT_REG(name, num, base) \
|
||||
REG_L name, ((num) * SZREG + MCONTEXT_GREGS)(base)
|
||||
|
||||
#define RESTORE_INT_REG_CFI(name, num, base) \
|
||||
RESTORE_INT_REG (name, num, base); \
|
||||
cfi_offset (name, (num) * SZREG + MCONTEXT_GREGS)
|
||||
|
||||
#endif /* _LINUX_RISCV_UCONTEXT_MACROS_H */
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
#include <inttypes.h>
|
||||
#include <signal.h>
|
||||
#include <stddef.h>
|
||||
#include <sys/ucontext.h>
|
||||
|
||||
-- Constants used by the rt_sigprocmask call.
|
||||
|
||||
SIG_BLOCK
|
||||
SIG_SETMASK
|
||||
|
||||
_NSIG8 (_NSIG / 8)
|
||||
|
||||
-- Offsets of the fields in the ucontext_t structure.
|
||||
#define ucontext(member) offsetof (ucontext_t, member)
|
||||
#define stack(member) ucontext (uc_stack.member)
|
||||
#define mcontext(member) ucontext (uc_mcontext.member)
|
||||
|
||||
UCONTEXT_FLAGS ucontext (__uc_flags)
|
||||
UCONTEXT_LINK ucontext (uc_link)
|
||||
UCONTEXT_STACK ucontext (uc_stack)
|
||||
UCONTEXT_MCONTEXT ucontext (uc_mcontext)
|
||||
UCONTEXT_SIGMASK ucontext (uc_sigmask)
|
||||
|
||||
STACK_SP stack (ss_sp)
|
||||
STACK_SIZE stack (ss_size)
|
||||
STACK_FLAGS stack (ss_flags)
|
||||
|
||||
MCONTEXT_GREGS mcontext (__gregs)
|
||||
MCONTEXT_FPREGS mcontext (__fpregs)
|
||||
|
||||
UCONTEXT_SIZE sizeof (ucontext_t)
|
||||
Loading…
Reference in New Issue