diff options
Diffstat (limited to 'libc/sysdeps/linux')
44 files changed, 1776 insertions, 271 deletions
diff --git a/libc/sysdeps/linux/aarch64/bits/shm.h b/libc/sysdeps/linux/aarch64/bits/shm.h new file mode 100644 index 000000000..bfb603499 --- /dev/null +++ b/libc/sysdeps/linux/aarch64/bits/shm.h @@ -0,0 +1,87 @@ +/* + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB + * in this tarball. + */ + +#ifndef _SYS_SHM_H +# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." +#endif + +#include <bits/types.h> + +/* Permission flag for shmget. */ +#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ +#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ + +/* Flags for `shmat'. */ +#define SHM_RDONLY 010000 /* attach read-only else read-write */ +#define SHM_RND 020000 /* round attach address to SHMLBA */ +#define SHM_REMAP 040000 /* take-over region on attach */ + +/* Commands for `shmctl'. */ +#define SHM_LOCK 11 /* lock segment (root only) */ +#define SHM_UNLOCK 12 /* unlock segment (root only) */ + +__BEGIN_DECLS + +/* Segment low boundary address multiple. */ +#define SHMLBA (__getpagesize () << 2) +extern int __getpagesize (void) __THROW __attribute__ ((__const__)); + + +/* Type to count number of attaches. */ +typedef unsigned long int shmatt_t; + +/* Data structure describing a set of semaphores. */ +struct shmid_ds + { + struct ipc_perm shm_perm; /* operation permission struct */ + size_t shm_segsz; /* size of segment in bytes */ + __time_t shm_atime; /* time of last shmat() */ + __time_t shm_dtime; /* time of last shmdt() */ + __time_t shm_ctime; /* time of last change by shmctl() */ + __pid_t shm_cpid; /* pid of creator */ + __pid_t shm_lpid; /* pid of last shmop */ + shmatt_t shm_nattch; /* number of current attaches */ + unsigned long int __uclibc_unused1; + unsigned long int __uclibc_unused2; + }; + +#ifdef __USE_MISC + +/* ipcs ctl commands */ +# define SHM_STAT 13 +# define SHM_INFO 14 + +/* shm_mode upper byte flags */ +# define SHM_DEST 01000 /* segment will be destroyed on last detach */ +# define SHM_LOCKED 02000 /* segment will not be swapped */ +# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ +# define SHM_NORESERVE 010000 /* don't check for reservations */ + +struct shminfo + { + unsigned long int shmmax; + unsigned long int shmmin; + unsigned long int shmmni; + unsigned long int shmseg; + unsigned long int shmall; + unsigned long int __uclibc_unused1; + unsigned long int __uclibc_unused2; + unsigned long int __uclibc_unused3; + unsigned long int __uclibc_unused4; + }; + +struct shm_info + { + int used_ids; + unsigned long int shm_tot; /* total allocated shm */ + unsigned long int shm_rss; /* total resident shm */ + unsigned long int shm_swp; /* total swapped shm */ + unsigned long int swap_attempts; + unsigned long int swap_successes; + }; + +#endif /* __USE_MISC */ + +__END_DECLS diff --git a/libc/sysdeps/linux/arc/bits/fenv.h b/libc/sysdeps/linux/arc/bits/fenv.h new file mode 100644 index 000000000..c5c76cb93 --- /dev/null +++ b/libc/sysdeps/linux/arc/bits/fenv.h @@ -0,0 +1,75 @@ +/* Floating point environment. ARC version. + Copyright (C) 2020-2025 Free Software Foundation, Inc. + + 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _FENV_H +# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." +#endif + +enum + { + FE_INVALID = +# define FE_INVALID (0x01) + FE_INVALID, + FE_DIVBYZERO = +# define FE_DIVBYZERO (0x02) + FE_DIVBYZERO, + FE_OVERFLOW = +# define FE_OVERFLOW (0x04) + FE_OVERFLOW, + FE_UNDERFLOW = +# define FE_UNDERFLOW (0x08) + FE_UNDERFLOW, + FE_INEXACT = +# define FE_INEXACT (0x10) + FE_INEXACT + }; + +# define FE_ALL_EXCEPT \ + (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT) + +enum + { + FE_TOWARDZERO = +# define FE_TOWARDZERO (0x0) + FE_TOWARDZERO, + FE_TONEAREST = +# define FE_TONEAREST (0x1) /* default */ + FE_TONEAREST, + FE_UPWARD = +# define FE_UPWARD (0x2) + FE_UPWARD, + FE_DOWNWARD = +# define FE_DOWNWARD (0x3) + FE_DOWNWARD + }; + +typedef unsigned int fexcept_t; + +typedef struct +{ + unsigned int __fpcr; + unsigned int __fpsr; +} fenv_t; + +/* If the default argument is used we use this value. */ +#define FE_DFL_ENV ((const fenv_t *) -1) + +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) diff --git a/libc/sysdeps/linux/arc/fpu_control.h b/libc/sysdeps/linux/arc/fpu_control.h new file mode 100644 index 000000000..e833de3aa --- /dev/null +++ b/libc/sysdeps/linux/arc/fpu_control.h @@ -0,0 +1,104 @@ +/* FPU control word bits. ARC version. + Copyright (C) 2020-2025 Free Software Foundation, Inc. + + 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _FPU_CONTROL_H +#define _FPU_CONTROL_H + +/* ARC FPU control register bits. + + [ 0] -> IVE: Enable invalid operation exception. + if 0, soft exception: status register IV flag set. + if 1, hardware exception trap (not supported in Linux yet). + [ 1] -> DZE: Enable division by zero exception. + if 0, soft exception: status register IV flag set. + if 1, hardware exception: (not supported in Linux yet). + [9:8] -> RM: Rounding Mode: + 00 - Rounding toward zero. + 01 - Rounding to nearest (default). + 10 - Rounding (up) toward plus infinity. + 11 - Rounding (down)toward minus infinity. + + ARC FPU status register bits. + + [ 0] -> IV: flag invalid operation. + [ 1] -> DZ: flag division by zero. + [ 2] -> OV: flag Overflow operation. + [ 3] -> UV: flag Underflow operation. + [ 4] -> IX: flag Inexact operation. + [31] -> FWE: Flag Write Enable. + If 1, above flags writable explicitly (clearing), + else IoW and only writable indirectly via bits [12:7]. */ + +#include <features.h> + +#if !defined(__ARC_FPU_SP__) && !defined(__ARC_FPU_DP__) + +# define _FPU_RESERVED 0xffffffff +# define _FPU_DEFAULT 0x00000000 +typedef unsigned int fpu_control_t; +# define _FPU_GETCW(cw) (cw) = 0 +# define _FPU_SETCW(cw) (void) (cw) +# define _FPU_GETS(cw) (cw) = 0 +# define _FPU_SETS(cw) (void) (cw) +extern fpu_control_t __fpu_control; + +#else + +#define _FPU_RESERVED 0 + +/* The fdlibm code requires strict IEEE double precision arithmetic, + and no interrupts for exceptions, rounding to nearest. + So only RM set to b'01. */ +# define _FPU_DEFAULT 0x00000100 + +/* Actually default needs to have FWE bit as 1 but that is already + ingrained into _FPU_SETS macro below. */ +#define _FPU_FPSR_DEFAULT 0x00000000 + +#define __FPU_RND_SHIFT 8 +#define __FPU_RND_MASK 0x3 + +/* Type of the control word. */ +typedef unsigned int fpu_control_t; + +/* Macros for accessing the hardware control word. */ +# define _FPU_GETCW(cw) __asm__ volatile ("lr %0, [0x300]" : "=r" (cw)) +# define _FPU_SETCW(cw) __asm__ volatile ("sr %0, [0x300]" : : "r" (cw)) + +/* Macros for accessing the hardware status word. + Writing to FPU_STATUS requires a "control" bit FWE to be able to set the + exception flags directly (as opposed to side-effects of FP instructions). + That is done in the macro here to keeps callers agnostic of this detail. + And given FWE is write-only and RAZ, no need to "clear" it in _FPU_GETS + macro. */ +# define _FPU_GETS(cw) \ + __asm__ volatile ("lr %0, [0x301] \r\n" \ + : "=r" (cw)) + +# define _FPU_SETS(cw) \ + do { \ + unsigned int __fwe = 0x80000000 | (cw); \ + __asm__ volatile ("sr %0, [0x301] \r\n" \ + : : "r" (__fwe)); \ + } while (0) + +/* Default control word set at startup. */ +extern fpu_control_t __fpu_control; + +#endif + +#endif /* fpu_control.h */ diff --git a/libc/sysdeps/linux/arm/bits/shm.h b/libc/sysdeps/linux/arm/bits/shm.h index 86245faff..aa1a72e54 100644 --- a/libc/sysdeps/linux/arm/bits/shm.h +++ b/libc/sysdeps/linux/arm/bits/shm.h @@ -49,12 +49,18 @@ struct shmid_ds { struct ipc_perm shm_perm; /* operation permission struct */ size_t shm_segsz; /* size of segment in bytes */ +#if defined(__UCLIBC_USE_TIME64__) + __time_t shm_atime; + __time_t shm_dtime; + __time_t shm_ctime; +#else __time_t shm_atime; /* time of last shmat() */ unsigned long int __uclibc_unused1; __time_t shm_dtime; /* time of last shmdt() */ unsigned long int __uclibc_unused2; __time_t shm_ctime; /* time of last change by shmctl() */ unsigned long int __uclibc_unused3; +#endif __pid_t shm_cpid; /* pid of creator */ __pid_t shm_lpid; /* pid of last shmop */ shmatt_t shm_nattch; /* number of current attaches */ diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in index e0b280c33..4a4317432 100644 --- a/libc/sysdeps/linux/common/Makefile.in +++ b/libc/sysdeps/linux/common/Makefile.in @@ -27,6 +27,7 @@ CSRC-$(UCLIBC_LINUX_SPECIFIC) += \ eventfd_write.c \ fanotify.c \ getrandom.c \ + getentropy.c \ inotify.c \ ioperm.c \ iopl.c \ diff --git a/libc/sysdeps/linux/common/bits/msq.h b/libc/sysdeps/linux/common/bits/msq.h index b594cfff2..0cb734263 100644 --- a/libc/sysdeps/linux/common/bits/msq.h +++ b/libc/sysdeps/linux/common/bits/msq.h @@ -37,17 +37,31 @@ typedef unsigned long int msglen_t; struct msqid_ds { struct ipc_perm msg_perm; /* structure describing operation permission */ +#if (__WORDSIZE == 32 && defined(__riscv) && defined(__UCLIBC_USE_TIME64__)) + unsigned long int msg_stime_internal_1; + unsigned long int msg_stime_internal_2; + unsigned long int msg_rtime_internal_1; + unsigned long int msg_rtime_internal_2; + unsigned long int msg_ctime_internal_1; + unsigned long int msg_ctime_internal_2; +#else __time_t msg_stime; /* time of last msgsnd command */ unsigned long int __uclibc_unused1; __time_t msg_rtime; /* time of last msgrcv command */ unsigned long int __uclibc_unused2; __time_t msg_ctime; /* time of last change */ unsigned long int __uclibc_unused3; +#endif unsigned long int __msg_cbytes; /* current number of bytes on queue */ msgqnum_t msg_qnum; /* number of messages currently on queue */ msglen_t msg_qbytes; /* max number of bytes allowed on queue */ __pid_t msg_lspid; /* pid of last msgsnd() */ __pid_t msg_lrpid; /* pid of last msgrcv() */ +#if (__WORDSIZE == 32 && defined(__riscv) && defined(__UCLIBC_USE_TIME64__)) + __time_t msg_stime; /* time of last msgsnd command */ + __time_t msg_rtime; /* time of last msgrcv command */ + __time_t msg_ctime; /* time of last change */ +#endif unsigned long int __uclibc_unused4; unsigned long int __uclibc_unused5; }; diff --git a/libc/sysdeps/linux/common/bits/sem.h b/libc/sysdeps/linux/common/bits/sem.h index 24a130981..d855494ee 100644 --- a/libc/sysdeps/linux/common/bits/sem.h +++ b/libc/sysdeps/linux/common/bits/sem.h @@ -45,8 +45,8 @@ struct semid_ds #else __time_t sem_otime; /* last semop() time */ #endif -#if (__WORDSIZE == 32 && !defined(__ARC64_ARCH32__) && !defined(__arc__) && !defined(__arm__) && !defined(__or1k__) && !defined(__xtensa__)) || \ - ((defined(__ARC64_ARCH32__) || defined(__arc__) || defined(__arm__) || defined(__or1k__) || defined(__xtensa__)) && !defined(__UCLIBC_USE_TIME64__)) +#if (__WORDSIZE == 32 && !defined(__ARC64_ARCH32__) && !defined(__arc__) && !defined(__arm__) && !defined(__or1k__) && !defined(__xtensa__) && !defined(__riscv)) || \ + ((defined(__ARC64_ARCH32__) || defined(__arc__) || defined(__arm__) || defined(__or1k__) || defined(__xtensa__) || defined(__riscv)) && !defined(__UCLIBC_USE_TIME64__)) unsigned long int __uclibc_unused1; #endif #if defined(__UCLIBC_USE_TIME64__) @@ -55,8 +55,8 @@ struct semid_ds #else __time_t sem_ctime; /* last time changed by semctl() */ #endif -#if (__WORDSIZE == 32 && !defined(__ARC64_ARCH32__) && !defined(__arc__) && !defined(__arm__) && !defined(__or1k__) && !defined(__xtensa__)) || \ - ((defined(__ARC64_ARCH32__) || defined(__arc__) || defined(__arm__) || defined(__or1k__) || defined(__xtensa__)) && !defined(__UCLIBC_USE_TIME64__)) +#if (__WORDSIZE == 32 && !defined(__ARC64_ARCH32__) && !defined(__arc__) && !defined(__arm__) && !defined(__or1k__) && !defined(__xtensa__) && !defined(__riscv)) || \ + ((defined(__ARC64_ARCH32__) || defined(__arc__) || defined(__arm__) || defined(__or1k__) || defined(__xtensa__) || defined(__riscv)) && !defined(__UCLIBC_USE_TIME64__)) unsigned long int __uclibc_unused2; #endif unsigned long int sem_nsems; /* number of semaphores in set */ diff --git a/libc/sysdeps/linux/common/bits/typesizes.h b/libc/sysdeps/linux/common/bits/typesizes.h index dcb2c3b0a..074758701 100644 --- a/libc/sysdeps/linux/common/bits/typesizes.h +++ b/libc/sysdeps/linux/common/bits/typesizes.h @@ -73,5 +73,15 @@ /* Number of descriptors that can fit in an `fd_set'. */ #define __FD_SETSIZE 1024 +#if __WORDSIZE == 64 +/* Tell the code that off_t and off64_t are actually the same type + for all ABI purposes, even if possibly expressed as different base types + for C type-checking purposes. */ +# define __OFF_T_MATCHES_OFF64_T 1 + +/* Same for ino_t and ino64_t. */ +# define __INO_T_MATCHES_INO64_T 1 + +#endif #endif /* bits/typesizes.h */ diff --git a/libc/sysdeps/linux/common/getentropy.c b/libc/sysdeps/linux/common/getentropy.c new file mode 100644 index 000000000..d255310b6 --- /dev/null +++ b/libc/sysdeps/linux/common/getentropy.c @@ -0,0 +1,46 @@ +/* + * getentropy() by wrapping getrandom(), for µClibc-ng + * + * © 2025 mirabilos Ⓕ CC0 or MirBSD or GNU LGPLv2 + * + * Note: may be a thread cancellation point, unlike the + * implementations in glibc and musl libc. Should this + * ever become a concern, it will need patching. + */ + +#define _DEFAULT_SOURCE +#include <errno.h> +#include <unistd.h> +#include <sys/random.h> +#include <sys/syscall.h> + +#ifdef __NR_getrandom +int +getentropy(void *__buf, size_t __len) +{ + ssize_t n; + + if (__len > 256U) { + errno = EIO; + return (-1); + } + + again: + if ((n = getrandom(__buf, __len, 0)) == -1) + switch (errno) { + case EAGAIN: /* should not happen but better safe than sorry */ + case EINTR: + goto again; + default: + errno = EIO; + /* FALLTHROUGH */ + case EFAULT: + case ENOSYS: + return (-1); + } + if ((size_t)n != __len) + /* also shouldn’t happen (safety net) */ + goto again; + return (0); +} +#endif diff --git a/libc/sysdeps/linux/common/getrandom.c b/libc/sysdeps/linux/common/getrandom.c index bb9841463..1db1663b9 100644 --- a/libc/sysdeps/linux/common/getrandom.c +++ b/libc/sysdeps/linux/common/getrandom.c @@ -8,6 +8,7 @@ #include <sys/syscall.h> #include <sys/random.h> + #ifdef __NR_getrandom -_syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) +_syscall3(ssize_t, getrandom, void *, buf, size_t, buflen, unsigned int, flags) #endif diff --git a/libc/sysdeps/linux/common/sys/random.h b/libc/sysdeps/linux/common/sys/random.h index 3d24e439b..c3d9cf575 100644 --- a/libc/sysdeps/linux/common/sys/random.h +++ b/libc/sysdeps/linux/common/sys/random.h @@ -4,11 +4,19 @@ #ifndef _SYS_RANDOM_H #define _SYS_RANDOM_H 1 + #include <features.h> #include <stddef.h> __BEGIN_DECLS +#include <bits/types.h> + +#ifndef __ssize_t_defined +typedef __ssize_t ssize_t; +# define __ssize_t_defined +#endif + #if defined __UCLIBC_LINUX_SPECIFIC__ # if 0 /*def __ASSUME_GETRANDOM_SYSCALL */ # include <linux/random.h> @@ -26,9 +34,15 @@ __BEGIN_DECLS # define GRND_RANDOM 0x0002 # define GRND_INSECURE 0x0004 # endif -/* FIXME: aren't there a couple of __restrict and const missing ? */ -extern int getrandom(void *__buf, size_t count, unsigned int flags) +extern ssize_t getrandom(void *__buf, size_t count, unsigned int flags) __nonnull ((1)) __wur; + +/* OpenBSD-compatible access to random bytes. + May be a cancellation point here, unlike in glibc/musl. */ +# ifndef __getentropy_defined +extern int getentropy(void *__buf, size_t __len) __nonnull ((1)) __wur; +# define __getentropy_defined +# endif #endif __END_DECLS diff --git a/libc/sysdeps/linux/common/utimes.c b/libc/sysdeps/linux/common/utimes.c index a28594dfd..c471a9b89 100644 --- a/libc/sysdeps/linux/common/utimes.c +++ b/libc/sysdeps/linux/common/utimes.c @@ -9,7 +9,7 @@ #include <sys/syscall.h> #include <sys/time.h> -#if (defined (__NR_utimensat) || defined(__NR_utimensat_time64)) && !defined __NR_utimes +#if (defined (__NR_utimensat) || defined(__NR_utimensat_time64)) && (!defined __NR_utimes || defined(__UCLIBC_USE_TIME64__)) # include <fcntl.h> # include <stddef.h> int utimes(const char *file, const struct timeval tvp[2]) @@ -50,6 +50,6 @@ int utimes(const char *file, const struct timeval tvp[2]) } #endif -#if defined __NR_utimensat || defined __NR_utimensat_time64 || defined __NR_utimes || defined __NR_utime +#if (((defined __NR_utimensat || defined __NR_utimensat_time64) && (!defined __NR_utimes || defined __UCLIBC_USE_TIME64__))) || defined __NR_utimes || defined __NR_utime libc_hidden_def(utimes) #endif diff --git a/libc/sysdeps/linux/csky/bits/fenv.h b/libc/sysdeps/linux/csky/bits/fenv.h index 3359e1f8e..1428f385a 100644 --- a/libc/sysdeps/linux/csky/bits/fenv.h +++ b/libc/sysdeps/linux/csky/bits/fenv.h @@ -1,65 +1,108 @@ -/* - * Copyright (C) 2017 Hangzhou C-SKY Microsystems co.,ltd. - * - * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB - * in this tarball. - */ +/* Floating point environment. C-SKY version. + Copyright (C) 2018-2025 Free Software Foundation, Inc. + + 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 + <https://www.gnu.org/licenses/>. */ #ifndef _FENV_H # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." #endif -/* Define bits representing the exception. We use the bit positions of - the appropriate bits in the FPSR Accrued Exception Byte. */ +#ifdef __csky_hard_float__ +/* Define bits representing the exception. We use the bit positions + of the appropriate bits in the FPU control word. */ enum { - FE_INEXACT = 1 << 3, -#define FE_INEXACT FE_INEXACT - FE_DIVBYZERO = 1 << 4, -#define FE_DIVBYZERO FE_DIVBYZERO - FE_UNDERFLOW = 1 << 5, -#define FE_UNDERFLOW FE_UNDERFLOW - FE_OVERFLOW = 1 << 6, -#define FE_OVERFLOW FE_OVERFLOW - FE_INVALID = 1 << 7 -#define FE_INVALID FE_INVALID + FE_INVALID = +#define FE_INVALID 0x01 + FE_INVALID, + FE_DIVBYZERO = +#define FE_DIVBYZERO 0x02 + FE_DIVBYZERO, + FE_OVERFLOW = +#define FE_OVERFLOW 0x04 + FE_OVERFLOW, + FE_UNDERFLOW = +#define FE_UNDERFLOW 0x08 + FE_UNDERFLOW, + FE_INEXACT = +#define FE_INEXACT 0x10 + FE_INEXACT, + __FE_DENORMAL = 0x20 }; #define FE_ALL_EXCEPT \ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) -/* The csky FPU supports all of the four defined rounding modes. We use - the bit positions in the FPCR Mode Control Byte as the values for the - appropriate macros. */ +/* The C-SKY FPU supports all of the four defined rounding modes. We + use again the bit positions in the FPU control word as the values + for the appropriate macros. */ +enum + { + FE_TONEAREST = +#define FE_TONEAREST (0x0 << 24) + FE_TONEAREST, + FE_TOWARDZERO = +#define FE_TOWARDZERO (0x1 << 24) + FE_TOWARDZERO, + FE_UPWARD = +#define FE_UPWARD (0x2 << 24) + FE_UPWARD, + FE_DOWNWARD = +#define FE_DOWNWARD (0x3 << 24) + FE_DOWNWARD, + __FE_ROUND_MASK = (0x3 << 24) + }; + +#else + +/* In the soft-float case, only rounding to nearest is supported, with + no exceptions. */ + enum { - FE_TONEAREST = 0, -#define FE_TONEAREST FE_TONEAREST - FE_TOWARDZERO = 1 << 4, -#define FE_TOWARDZERO FE_TOWARDZERO - FE_DOWNWARD = 2 << 4, -#define FE_DOWNWARD FE_DOWNWARD - FE_UPWARD = 3 << 4 -#define FE_UPWARD FE_UPWARD + __FE_UNDEFINED = -1, + + FE_TONEAREST = +# define FE_TONEAREST 0x0 + FE_TONEAREST }; +# define FE_ALL_EXCEPT 0 + +#endif + /* Type representing exception flags. */ typedef unsigned int fexcept_t; -/* Type representing floating-point environment. This structure - corresponds to the layout of the block written by `fmovem'. */ +/* Type representing floating-point environment. */ typedef struct - { - unsigned int __control_register; - unsigned int __status_register; - unsigned int __instruction_address; - } -fenv_t; +{ + unsigned int __fpcr; + unsigned int __fpsr; +} fenv_t; /* If the default argument is used we use this value. */ -#define FE_DFL_ENV ((__const fenv_t *) -1) +#define FE_DFL_ENV ((const fenv_t *) -1) -#ifdef __USE_GNU +#if defined __USE_GNU && defined __csky_hard_float__ /* Floating-point environment where none of the exceptions are masked. */ -# define FE_NOMASK_ENV ((__const fenv_t *) -2) +# define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) diff --git a/libc/sysdeps/linux/csky/fpu_control.h b/libc/sysdeps/linux/csky/fpu_control.h new file mode 100644 index 000000000..a2d615554 --- /dev/null +++ b/libc/sysdeps/linux/csky/fpu_control.h @@ -0,0 +1,147 @@ +/* FPU control word bits. C-SKY version. + Copyright (C) 2018-2025 Free Software Foundation, Inc. + + 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _FPU_CONTROL_H +#define _FPU_CONTROL_H + +/* C-SKY FPU floating point control register bits. + + 31-28 -> Reserved (read as 0, write with 0). + 27 -> 0: Flush denormalized results to zero. + 1: Flush denormalized results to signed minimal normal number. + 26 -> Reserved (read as 0, write with 0). + 25-24 -> Rounding control. + 23-6 -> Reserved (read as 0, write with 0). + 5 -> Enable exception for input denormalized exception. + 4 -> Enable exception for inexact exception. + 3 -> Enable exception for underflow exception. + 2 -> Enable exception for overflow exception. + 1 -> Enable exception for division by zero exception. + 0 -> Enable exception for invalid operation exception. + + Rounding Control: + 00 - Rounding to nearest (RN). + 01 - Rounding toward zero (RZ). + 10 - Rounding (up) toward plus infinity (RP). + 11 - Rounding (down)toward minus infinity (RM). + + C-SKY FPU floating point exception status register bits. + + 15 -> Accumulate bit for any exception. + 14 -> Reserved (read as 0, write with 0). + 13 -> Cause bit for input denormalized exception. + 12 -> Cause bit for inexact exception. + 11 -> Cause bit for underflow exception. + 10 -> Cause bit for overflow exception. + 9 -> Cause bit for division by zero exception. + 8 -> Cause bit for invalid operation exception. + 7 -> Flag bit for any exception. + 6 -> Reserved (read as 0, write with 0). + 5 -> Flag exception for input denormalized exception. + 4 -> Flag exception for inexact exception. + 3 -> Flag exception for underflow exception. + 2 -> Flag exception for overflow exception. + 1 -> Flag exception for division by zero exception. + 0 -> Flag exception for invalid operation exception. */ + +#include <features.h> + +#ifdef __csky_soft_float__ + +# define _FPU_RESERVED 0xffffffff +# define _FPU_DEFAULT 0x00000000 +typedef unsigned int fpu_control_t; +# define _FPU_GETCW(cw) (cw) = 0 +# define _FPU_SETCW(cw) (void) (cw) +# define _FPU_GETFPSR(cw) (cw) = 0 +# define _FPU_SETFPSR(cw) (void) (cw) +extern fpu_control_t __fpu_control; + +#else /* __csky_soft_float__ */ + +/* Masking of interrupts. */ +# define _FPU_MASK_IDE (1 << 5) /* Input denormalized exception. */ +# define _FPU_MASK_IXE (1 << 4) /* Inexact exception. */ +# define _FPU_MASK_UFE (1 << 3) /* Underflow exception. */ +# define _FPU_MASK_OFE (1 << 2) /* Overflow exception. */ +# define _FPU_MASK_DZE (1 << 1) /* Division by zero exception. */ +# define _FPU_MASK_IOE (1 << 0) /* Invalid operation exception. */ + +# define _FPU_MASK_FEA (1 << 15) /* Case for any exception. */ +# define _FPU_MASK_FEC (1 << 7) /* Flag for any exception. */ + +/* Flush denormalized numbers to zero. */ +# define _FPU_FLUSH_TZ 0x8000000 + +/* Rounding control. */ +# define _FPU_RC_NEAREST (0x0 << 24) /* RECOMMENDED. */ +# define _FPU_RC_ZERO (0x1 << 24) +# define _FPU_RC_UP (0x2 << 24) +# define _FPU_RC_DOWN (0x3 << 24) + +# define _FPU_RESERVED 0xf460ffc0 /* Reserved bits in cw. */ +# define _FPU_FPSR_RESERVED 0xffff4040 + +/* The fdlibm code requires strict IEEE double precision arithmetic, + and no interrupts for exceptions, rounding to nearest. */ + +# define _FPU_DEFAULT 0x00000000 +# define _FPU_FPSR_DEFAULT 0x00000000 + +/* IEEE: same as above, but exceptions. */ +# define _FPU_FPCR_IEEE 0x0000001F +# define _FPU_FPSR_IEEE 0x00000000 + +/* Type of the control word. */ +typedef unsigned int fpu_control_t; + +/* Macros for accessing the hardware control word. */ +# if (__CSKY__ == 2) +# define _FPU_GETCW(cw) __asm__ volatile ("mfcr %0, cr<1, 2>" : "=a" (cw)) +# define _FPU_SETCW(cw) __asm__ volatile ("mtcr %0, cr<1, 2>" : : "a" (cw)) +# define _FPU_GETFPSR(cw) __asm__ volatile ("mfcr %0, cr<2, 2>" : "=a" (cw)) +# define _FPU_SETFPSR(cw) __asm__ volatile ("mtcr %0, cr<2, 2>" : : "a" (cw)) +# else +# define _FPU_GETCW(cw) __asm__ volatile ("1: cprcr %0, cpcr2 \n" \ + " btsti %0, 31 \n" \ + " bt 1b \n" \ + " cprcr %0, cpcr1\n" : "=b" (cw)) + +# define _FPU_SETCW(cw) __asm__ volatile ("1: cprcr r7, cpcr2 \n" \ + " btsti r7, 31 \n" \ + " bt 1b \n" \ + " cpwcr %0, cpcr1 \n" \ + : : "b" (cw) : "r7") + +# define _FPU_GETFPSR(cw) __asm__ volatile ("1: cprcr %0, cpcr2 \n" \ + " btsti %0, 31 \n" \ + " bt 1b \n" \ + " cprcr %0, cpcr4\n" : "=b" (cw)) + +# define _FPU_SETFPSR(cw) __asm__ volatile ("1: cprcr r7, cpcr2 \n" \ + " btsti r7, 31 \n" \ + " bt 1b \n" \ + " cpwcr %0, cpcr4 \n" \ + : : "b" (cw) : "r7") +# endif /* __CSKY__ != 2 */ + +/* Default control word set at startup. */ +extern fpu_control_t __fpu_control; + +#endif /* !__csky_soft_float__ */ + +#endif /* fpu_control.h */ diff --git a/libc/sysdeps/linux/kvx/Makefile.arch b/libc/sysdeps/linux/kvx/Makefile.arch index 3ad290915..18f2118f6 100644 --- a/libc/sysdeps/linux/kvx/Makefile.arch +++ b/libc/sysdeps/linux/kvx/Makefile.arch @@ -8,3 +8,5 @@ CSRC-y := __syscall_error.c CSRC-$(UCLIBC_LINUX_SPECIFIC) += cachectl.c SSRC-y := setjmp.S bsd-setjmp.S bsd-_setjmp.S __longjmp.S clone.S vfork.S +CSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += makecontext.c +SSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += getcontext.S setcontext.S swapcontext.S diff --git a/libc/sysdeps/linux/kvx/bits/shm.h b/libc/sysdeps/linux/kvx/bits/shm.h new file mode 100644 index 000000000..bfb603499 --- /dev/null +++ b/libc/sysdeps/linux/kvx/bits/shm.h @@ -0,0 +1,87 @@ +/* + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB + * in this tarball. + */ + +#ifndef _SYS_SHM_H +# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." +#endif + +#include <bits/types.h> + +/* Permission flag for shmget. */ +#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ +#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ + +/* Flags for `shmat'. */ +#define SHM_RDONLY 010000 /* attach read-only else read-write */ +#define SHM_RND 020000 /* round attach address to SHMLBA */ +#define SHM_REMAP 040000 /* take-over region on attach */ + +/* Commands for `shmctl'. */ +#define SHM_LOCK 11 /* lock segment (root only) */ +#define SHM_UNLOCK 12 /* unlock segment (root only) */ + +__BEGIN_DECLS + +/* Segment low boundary address multiple. */ +#define SHMLBA (__getpagesize () << 2) +extern int __getpagesize (void) __THROW __attribute__ ((__const__)); + + +/* Type to count number of attaches. */ +typedef unsigned long int shmatt_t; + +/* Data structure describing a set of semaphores. */ +struct shmid_ds + { + struct ipc_perm shm_perm; /* operation permission struct */ + size_t shm_segsz; /* size of segment in bytes */ + __time_t shm_atime; /* time of last shmat() */ + __time_t shm_dtime; /* time of last shmdt() */ + __time_t shm_ctime; /* time of last change by shmctl() */ + __pid_t shm_cpid; /* pid of creator */ + __pid_t shm_lpid; /* pid of last shmop */ + shmatt_t shm_nattch; /* number of current attaches */ + unsigned long int __uclibc_unused1; + unsigned long int __uclibc_unused2; + }; + +#ifdef __USE_MISC + +/* ipcs ctl commands */ +# define SHM_STAT 13 +# define SHM_INFO 14 + +/* shm_mode upper byte flags */ +# define SHM_DEST 01000 /* segment will be destroyed on last detach */ +# define SHM_LOCKED 02000 /* segment will not be swapped */ +# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ +# define SHM_NORESERVE 010000 /* don't check for reservations */ + +struct shminfo + { + unsigned long int shmmax; + unsigned long int shmmin; + unsigned long int shmmni; + unsigned long int shmseg; + unsigned long int shmall; + unsigned long int __uclibc_unused1; + unsigned long int __uclibc_unused2; + unsigned long int __uclibc_unused3; + unsigned long int __uclibc_unused4; + }; + +struct shm_info + { + int used_ids; + unsigned long int shm_tot; /* total allocated shm */ + unsigned long int shm_rss; /* total resident shm */ + unsigned long int shm_swp; /* total swapped shm */ + unsigned long int swap_attempts; + unsigned long int swap_successes; + }; + +#endif /* __USE_MISC */ + +__END_DECLS diff --git a/libc/sysdeps/linux/kvx/getcontext.S b/libc/sysdeps/linux/kvx/getcontext.S new file mode 100644 index 000000000..9440f67ce --- /dev/null +++ b/libc/sysdeps/linux/kvx/getcontext.S @@ -0,0 +1,81 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive for + * more details. + * + * Copyright (C) 2025 Kalray Inc. + * Author(s): Julian Vetter <jvetter@kalrayinc.com> + */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + .text + +/* + * int getcontext (ucontext_t *ucp) + */ +ENTRY(__getcontext) + /* Save callee saved registers ($r14, $r18 - $r31) + * and some special registers */ + + /* Save the entire occtuple, although we only need $sp and $r14 */ + so MCONTEXT_Q12[$r0] = $r12r13r14r15 + get $r4 = $lc + ;; + /* Don't need to save veneer registers $r16 and $r17 */ + sq (MCONTEXT_Q16 + 16)[$r0] = $r18r19 + get $r5 = $le + ;; + so MCONTEXT_Q20[$r0] = $r20r21r22r23 + get $r6 = $ls + ;; + so MCONTEXT_Q24[$r0] = $r24r25r26r27 + get $r7 = $ra + ;; + so MCONTEXT_Q28[$r0] = $r28r29r30r31 + get $r8 = $cs + ;; + so MCONTEXT_LC_LE_LS_RA[$r0] = $r4r5r6r7 + /* Save ucp and $ra in callee saved registers because below we need to + * do a call to sigprocmask and afterwards we need to restore $ra. */ + copyd $r20 = $r0 + copyd $r21 = $r7 + ;; + sd MCONTEXT_CS_SPC[$r0] = $r8 + + /* Prepare call to sigprocmask */ + make $r0 = SIG_BLOCK + make $r1 = 0 + ;; + /* $r20 points to the ucontext */ + addd $r2 = $r20, UCONTEXT_SIGMASK + /* Already set the return value for when this is called in the context + * of swapcontext. Because when this context returns it should look + * like as if swapcontext returned with 0. */ + sd MCONTEXT_Q0[$r20] = $r1 + ;; + /* sigprocmask(SIG_BLOCK, NULL, &(ucontext->uc_sigmask)) */ + call sigprocmask + ;; + /* Restore $ra to point to the caller of this function. So, + * __getcontext will return with -1 (set by __syscall_error) and an + * appropriate errno */ + set $ra = $r21 + ;; + /* Check return value of sigprocmask */ + cb.deqz $r0 ? 1f + ;; + goto __syscall_error + ;; +1: + /* Restore used callee saved registers */ + lq $r20r21 = MCONTEXT_Q20[$r20] + ;; + /* Set return value */ + make $r0 = 0 + ret + ;; +END(__getcontext) +weak_alias(__getcontext, getcontext) diff --git a/libc/sysdeps/linux/kvx/makecontext.c b/libc/sysdeps/linux/kvx/makecontext.c new file mode 100644 index 000000000..a52eded9f --- /dev/null +++ b/libc/sysdeps/linux/kvx/makecontext.c @@ -0,0 +1,53 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive for + * more details. + * + * Copyright (C) 2025 Kalray Inc. + * Author(s): Julian Vetter <jvetter@kalrayinc.com> + */ + +#include <stdarg.h> +#include <ucontext.h> + + +/* Number of arguments that go in registers. */ +#define NREG_ARGS 12 + +/* Take a context previously prepared via getcontext() and set to + call func() with the given int only args. */ +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + extern void __startcontext (void); + unsigned long *funcstack; + va_list vl; + unsigned long *regptr; + unsigned int reg; + + /* Start at the top of stack. */ + funcstack = (unsigned long *) (ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size); + funcstack -= argc < NREG_ARGS ? 0 : argc - NREG_ARGS; + funcstack = (unsigned long *) (((uintptr_t) funcstack & -32L)); + + ucp->uc_mcontext.sc_regs.r12 = (unsigned long) funcstack; + /* Use $r20 and $r21 to pass some infos to __startcontext */ + ucp->uc_mcontext.sc_regs.r20 = (unsigned long) ucp->uc_link; + ucp->uc_mcontext.sc_regs.r21 = (unsigned long) func; + ucp->uc_mcontext.sc_regs.ra = (unsigned long) __startcontext; + + va_start (vl, argc); + + /* The first twelve arguments go into registers. */ + regptr = &(ucp->uc_mcontext.sc_regs.r0); + + for (reg = 0; (reg < argc) && (reg < NREG_ARGS); reg++) + *regptr++ = va_arg (vl, unsigned long); + + /* And the remainder on the stack. */ + for (; reg < argc; reg++) + *funcstack++ = va_arg (vl, unsigned long); + + va_end (vl); +} +weak_alias (__makecontext, makecontext) diff --git a/libc/sysdeps/linux/kvx/setcontext.S b/libc/sysdeps/linux/kvx/setcontext.S new file mode 100644 index 000000000..7b91d21d9 --- /dev/null +++ b/libc/sysdeps/linux/kvx/setcontext.S @@ -0,0 +1,106 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive for + * more details. + * + * Copyright (C) 2025 Kalray Inc. + * Author(s): Julian Vetter <jvetter@kalrayinc.com> + */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + .text + +/* + * int setcontext (const ucontext_t *ucp) + */ +ENTRY(__setcontext) + get $r16 = $ra + addd $r12 = $r12, -32 + ;; + /* Save ucp pointer and $ra on the stack because we can't trash + * any callee saved registers in case __setcontext returns */ + sd 16[$r12] = $r16 + ;; + sd 24[$r12] = $r0 + ;; + /* Bring back the signal status. */ + make $r0 = SIG_SETMASK + addd $r1 = $r0, UCONTEXT_SIGMASK + make $r2 = 0 + ;; + /* sigprocmask(SIG_SETMASK, &(ucontext->uc_sigmask), NULL) */ + call sigprocmask + ;; + /* Check return value of sigprocmask */ + cb.deqz $r0 ? 1f + /* Normally __setcontext does not return. But in case of an error it + * returns with -1 and an appropriate errno */ + ld $r16 = 16[$r12] + ;; + set $ra = $r16 + addd $r12 = $r12, 32 + ;; + goto __syscall_error + ;; +1: + /* Get back the ucp pointer */ + ld $r16 = 24[$r12] + /* Reset the stack pointer (we can trash $ra here, because we will + * never return to after __setcontext from this point onwards) */ + addd $r12 = $r12, 32 + ;; + /* Restore callee saved registers */ + lq $r18r19 = (MCONTEXT_Q16 + 16)[$r16] + ;; + /* Setup $r20, $r21 for the __startcontext to work */ + lo $r20r21r22r23 = MCONTEXT_Q20[$r16] + ;; + lo $r24r25r26r27 = MCONTEXT_Q24[$r16] + ;; + lo $r28r29r30r31 = MCONTEXT_Q28[$r16] + ;; + /* Restore special registers */ + lo $r40r41r42r43 = MCONTEXT_LC_LE_LS_RA[$r16] + ;; + /* Now load argument registers */ + lo $r0r1r2r3 = MCONTEXT_Q0[$r16] + set $lc = $r40 + ;; + lo $r4r5r6r7 = MCONTEXT_Q4[$r16] + set $le = $r41 + ;; + lo $r8r9r10r11 = MCONTEXT_Q8[$r16] + set $ls = $r42 + ;; + /* Restore $sp */ + ld $r12 = MCONTEXT_Q12[$r16] + /* Restore $ra which points to the $ra set by __getcontext or + * to__startcontext if __makecontext was called in between */ + set $ra = $r43 + ;; + ld $r40 = MCONTEXT_CS_SPC[$r16] + ;; + ld $r14 = (MCONTEXT_Q12 + 16)[$r16] + set $cs = $r40 + ;; + ret + ;; +END(setcontext) +weak_alias(__setcontext, setcontext) + +ENTRY(__startcontext) + icall $r21 + ;; + copyd $r0 = $r20 + /* Check if the new context is 0 if so just call _exit */ + cb.deqz $r20 ? 1f + ;; + goto __setcontext + ;; + /* This should never be reached otherwise kill the thread */ +1: goto _exit + ;; +END(__startcontext) diff --git a/libc/sysdeps/linux/kvx/swapcontext.S b/libc/sysdeps/linux/kvx/swapcontext.S new file mode 100644 index 000000000..1abb6a8a8 --- /dev/null +++ b/libc/sysdeps/linux/kvx/swapcontext.S @@ -0,0 +1,63 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive for + * more details. + * + * Copyright (C) 2025 Kalray Inc. + * Author(s): Julian Vetter <jvetter@kalrayinc.com> + */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + .text + +/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */ + +ENTRY(swapcontext) + /* Make space on the stack to save all caller saved registers */ + get $r16 = $ra + addd $r12 = $r12, -32 + ;; + + /* Save $ra on the stack */ + sd (24)[$r12] = $r16 + ;; + /* Save the arguments of swapcontext on the stack */ + sq (8)[$r12] = $r0r1 + ;; + call __getcontext + ;; + + /* Save the return value of __getcontext in $r17 */ + copyd $r17 = $r0 + + /* Restore $ra */ + ld $r16 = (24)[$r12] + ;; + /* Restore arguments */ + lq $r0r1 = (8)[$r12] + /* Readjust the stack pointer */ + addd $r12 = $r12, 32 + /* Also restore $ra */ + set $ra = $r16 + ;; + + /* Exit if getcontext() failed */ + cb.deqz $r17 ? 1f + ;; + + /* Set the return value set by __syscall_error in __getcontext */ + copyd $r0 = $r17 + ret + ;; +1: + /* Store the $sp and $ra in the context to be saved */ + sd (MCONTEXT_Q12)[$r0] = $r12 + ;; + sd (MCONTEXT_LC_LE_LS_RA + 24)[$r0] = $r16 + copyd $r0 = $r1 + goto __setcontext + ;; +END(swapcontext) diff --git a/libc/sysdeps/linux/kvx/sys/ucontext.h b/libc/sysdeps/linux/kvx/sys/ucontext.h index a97b83cad..6a30a09e2 100644 --- a/libc/sysdeps/linux/kvx/sys/ucontext.h +++ b/libc/sysdeps/linux/kvx/sys/ucontext.h @@ -17,11 +17,13 @@ /* Type for general register. */ typedef unsigned long greg_t; +typedef struct sigcontext mcontext_t; + typedef struct ucontext { unsigned long uc_flags; struct ucontext *uc_link; stack_t uc_stack; - struct sigcontext uc_mcontext; + mcontext_t uc_mcontext; sigset_t uc_sigmask; /* mask last for extensibility */ } ucontext_t; diff --git a/libc/sysdeps/linux/kvx/ucontext_i.sym b/libc/sysdeps/linux/kvx/ucontext_i.sym new file mode 100644 index 000000000..d2b565332 --- /dev/null +++ b/libc/sysdeps/linux/kvx/ucontext_i.sym @@ -0,0 +1,28 @@ +#include <inttypes.h> +#include <signal.h> +#include <stddef.h> +#include <sys/ucontext.h> + +SIG_BLOCK +SIG_SETMASK + +-- Offsets of the fields in the ucontext_t structure. +#define ucontext(member) offsetof (ucontext_t, 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) + +MCONTEXT_Q0 mcontext (sc_regs.r0) +MCONTEXT_Q4 mcontext (sc_regs.r4) +MCONTEXT_Q8 mcontext (sc_regs.r8) +MCONTEXT_Q12 mcontext (sc_regs.r12) +MCONTEXT_Q16 mcontext (sc_regs.r16) +MCONTEXT_Q20 mcontext (sc_regs.r20) +MCONTEXT_Q24 mcontext (sc_regs.r24) +MCONTEXT_Q28 mcontext (sc_regs.r28) +MCONTEXT_LC_LE_LS_RA mcontext (sc_regs.lc) +MCONTEXT_CS_SPC mcontext (sc_regs.cs) diff --git a/libc/sysdeps/linux/m68k/bits/fenv.h b/libc/sysdeps/linux/m68k/bits/fenv.h index b07f0ab51..37c5fe829 100644 --- a/libc/sysdeps/linux/m68k/bits/fenv.h +++ b/libc/sysdeps/linux/m68k/bits/fenv.h @@ -1,5 +1,4 @@ -/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. +/* Copyright (C) 1997-2025 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -12,31 +11,38 @@ 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/>. */ + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ #ifndef _FENV_H # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." #endif +#if defined __HAVE_68881__ || defined __HAVE_FPU__ || defined __mcffpu__ + /* Define bits representing the exception. We use the bit positions of the appropriate bits in the FPSR Accrued Exception Byte. */ enum { - FE_INEXACT = 1 << 3, -#define FE_INEXACT FE_INEXACT - FE_DIVBYZERO = 1 << 4, -#define FE_DIVBYZERO FE_DIVBYZERO - FE_UNDERFLOW = 1 << 5, -#define FE_UNDERFLOW FE_UNDERFLOW - FE_OVERFLOW = 1 << 6, -#define FE_OVERFLOW FE_OVERFLOW - FE_INVALID = 1 << 7 -#define FE_INVALID FE_INVALID + FE_INEXACT = +# define FE_INEXACT (1 << 3) + FE_INEXACT, + FE_DIVBYZERO = +# define FE_DIVBYZERO (1 << 4) + FE_DIVBYZERO, + FE_UNDERFLOW = +# define FE_UNDERFLOW (1 << 5) + FE_UNDERFLOW, + FE_OVERFLOW = +# define FE_OVERFLOW (1 << 6) + FE_OVERFLOW, + FE_INVALID = +# define FE_INVALID (1 << 7) + FE_INVALID }; -#define FE_ALL_EXCEPT \ +# define FE_ALL_EXCEPT \ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) /* The m68k FPU supports all of the four defined rounding modes. We use @@ -44,21 +50,45 @@ enum appropriate macros. */ enum { - FE_TONEAREST = 0, -#define FE_TONEAREST FE_TONEAREST - FE_TOWARDZERO = 1 << 4, -#define FE_TOWARDZERO FE_TOWARDZERO - FE_DOWNWARD = 2 << 4, -#define FE_DOWNWARD FE_DOWNWARD - FE_UPWARD = 3 << 4 -#define FE_UPWARD FE_UPWARD + FE_TONEAREST = +# define FE_TONEAREST 0 + FE_TONEAREST, + FE_TOWARDZERO = +# define FE_TOWARDZERO (1 << 4) + FE_TOWARDZERO, + FE_DOWNWARD = +# define FE_DOWNWARD (2 << 4) + FE_DOWNWARD, + FE_UPWARD = +# define FE_UPWARD (3 << 4) + FE_UPWARD }; +#else + +/* In the soft-float case, only rounding to nearest is supported, with + no exceptions. */ + +# define FE_ALL_EXCEPT 0 + +enum + { + __FE_UNDEFINED = -1, + + FE_TONEAREST = +# define FE_TONEAREST 0 + FE_TONEAREST + }; + +#endif + /* Type representing exception flags. */ typedef unsigned int fexcept_t; +#if defined __HAVE_68881__ || defined __HAVE_FPU__ || defined __mcffpu__ + /* Type representing floating-point environment. This structure corresponds to the layout of the block written by `fmovem'. */ typedef struct @@ -69,10 +99,30 @@ typedef struct } fenv_t; +#else + +/* Keep ABI compatibility with the type used in the generic + bits/fenv.h, formerly used for no-FPU ColdFire. */ +typedef struct + { + fexcept_t __excepts; + } +fenv_t; + +#endif + /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((const fenv_t *) -1) -#ifdef __USE_GNU +#if defined __USE_GNU && (defined __HAVE_68881__ \ + || defined __HAVE_FPU__ \ + || defined __mcffpu__) /* Floating-point environment where none of the exceptions are masked. */ # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) diff --git a/libc/sysdeps/linux/m68k/bits/shm.h b/libc/sysdeps/linux/m68k/bits/shm.h new file mode 100644 index 000000000..aa1a72e54 --- /dev/null +++ b/libc/sysdeps/linux/m68k/bits/shm.h @@ -0,0 +1,108 @@ +/* Copyright (C) 1995,1996,1997,2000,2002,2004 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_SHM_H +# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." +#endif + +#include <bits/types.h> + +/* Permission flag for shmget. */ +#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ +#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ + +/* Flags for `shmat'. */ +#define SHM_RDONLY 010000 /* attach read-only else read-write */ +#define SHM_RND 020000 /* round attach address to SHMLBA */ +#define SHM_REMAP 040000 /* take-over region on attach */ + +/* Commands for `shmctl'. */ +#define SHM_LOCK 11 /* lock segment (root only) */ +#define SHM_UNLOCK 12 /* unlock segment (root only) */ + +__BEGIN_DECLS + +/* Segment low boundary address multiple. */ +#define SHMLBA (__getpagesize () << 2) +extern int __getpagesize (void) __THROW __attribute__ ((__const__)); + + +/* Type to count number of attaches. */ +typedef unsigned long int shmatt_t; + +/* Data structure describing a set of semaphores. */ +struct shmid_ds + { + struct ipc_perm shm_perm; /* operation permission struct */ + size_t shm_segsz; /* size of segment in bytes */ +#if defined(__UCLIBC_USE_TIME64__) + __time_t shm_atime; + __time_t shm_dtime; + __time_t shm_ctime; +#else + __time_t shm_atime; /* time of last shmat() */ + unsigned long int __uclibc_unused1; + __time_t shm_dtime; /* time of last shmdt() */ + unsigned long int __uclibc_unused2; + __time_t shm_ctime; /* time of last change by shmctl() */ + unsigned long int __uclibc_unused3; +#endif + __pid_t shm_cpid; /* pid of creator */ + __pid_t shm_lpid; /* pid of last shmop */ + shmatt_t shm_nattch; /* number of current attaches */ + unsigned long int __uclibc_unused4; + unsigned long int __uclibc_unused5; + }; + +#ifdef __USE_MISC + +/* ipcs ctl commands */ +# define SHM_STAT 13 +# define SHM_INFO 14 + +/* shm_mode upper byte flags */ +# define SHM_DEST 01000 /* segment will be destroyed on last detach */ +# define SHM_LOCKED 02000 /* segment will not be swapped */ +# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ +# define SHM_NORESERVE 010000 /* don't check for reservations */ + +struct shminfo + { + unsigned long int shmmax; + unsigned long int shmmin; + unsigned long int shmmni; + unsigned long int shmseg; + unsigned long int shmall; + unsigned long int __uclibc_unused1; + unsigned long int __uclibc_unused2; + unsigned long int __uclibc_unused3; + unsigned long int __uclibc_unused4; + }; + +struct shm_info + { + int used_ids; + unsigned long int shm_tot; /* total allocated shm */ + unsigned long int shm_rss; /* total resident shm */ + unsigned long int shm_swp; /* total swapped shm */ + unsigned long int swap_attempts; + unsigned long int swap_successes; + }; + +#endif /* __USE_MISC */ + +__END_DECLS diff --git a/libc/sysdeps/linux/m68k/bsd-_setjmp.S b/libc/sysdeps/linux/m68k/bsd-_setjmp.S index c963cccf5..eaabce8ed 100644 --- a/libc/sysdeps/linux/m68k/bsd-_setjmp.S +++ b/libc/sysdeps/linux/m68k/bsd-_setjmp.S @@ -13,7 +13,9 @@ _setjmp: moveal %sp@(4), %a0 movel %sp@(0), %a0@(JB_PC) moveml %d2-%d7/%a2-%a7, %a0@(JB_REGS) -#if defined __HAVE_68881__ || defined __UCLIBC_HAS_FPU__ +#if defined(__mcffpu__) && defined(__UCLIBC_HAS_FPU__) + fmovemd %fp2-%fp7, %a0@(JB_FPREGS) +#elif defined(__HAVE_68881__) fmovemx %fp2-%fp7, %a0@(JB_FPREGS) #endif clrl %d0 diff --git a/libc/sysdeps/linux/m68k/bsd-setjmp.S b/libc/sysdeps/linux/m68k/bsd-setjmp.S index 9daf27713..7d76d192b 100644 --- a/libc/sysdeps/linux/m68k/bsd-setjmp.S +++ b/libc/sysdeps/linux/m68k/bsd-setjmp.S @@ -14,7 +14,9 @@ setjmp: moveal %sp@(4), %a0 movel %sp@(0), %a0@(JB_PC) moveml %d2-%d7/%a2-%a7, %a0@(JB_REGS) -#if defined __HAVE_68881__ || defined __UCLIBC_HAS_FPU__ +#if defined(__mcffpu__) && defined(__UCLIBC_HAS_FPU__) + fmovemd %fp2-%fp7, %a0@(JB_FPREGS) +#elif defined(__HAVE_68881__) fmovemx %fp2-%fp7, %a0@(JB_FPREGS) #endif clrl %d0 diff --git a/libc/sysdeps/linux/m68k/fpu_control.h b/libc/sysdeps/linux/m68k/fpu_control.h index 35ad95e6d..c3a9c6326 100644 --- a/libc/sysdeps/linux/m68k/fpu_control.h +++ b/libc/sysdeps/linux/m68k/fpu_control.h @@ -1,6 +1,5 @@ /* 68k FPU control word definitions. - Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. - This file is part of the GNU C Library. + Copyright (C) 1996-2025 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -13,8 +12,8 @@ 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/>. */ + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ #ifndef _FPU_CONTROL_H #define _FPU_CONTROL_H @@ -29,9 +28,9 @@ * 12 -> enable trap for OVFL exception * 11 -> enable trap for UNFL exception * 10 -> enable trap for DZ exception - * 9 -> enable trap for INEX2 exception - * 8 -> enable trap for INEX1 exception - * 7-6 -> Precision Control + * 9 -> enable trap for INEX2 exception (INEX on Coldfire) + * 8 -> enable trap for INEX1 exception (IDE on Coldfire) + * 7-6 -> Precision Control (only bit 6 is used on Coldfire) * 5-4 -> Rounding Control * 3-0 -> zero (read as 0, write as 0) * @@ -53,50 +52,66 @@ #include <features.h> +#if defined (__mcoldfire__) && !defined (__mcffpu__) + +# define _FPU_RESERVED 0xffffffff +# define _FPU_DEFAULT 0x00000000 +# define _FPU_GETCW(cw) ((cw) = 0) +# define _FPU_SETCW(cw) ((void) (cw)) + +#else + /* masking of interrupts */ -#define _FPU_MASK_BSUN 0x8000 -#define _FPU_MASK_SNAN 0x4000 -#define _FPU_MASK_OPERR 0x2000 -#define _FPU_MASK_OVFL 0x1000 -#define _FPU_MASK_UNFL 0x0800 -#define _FPU_MASK_DZ 0x0400 -#define _FPU_MASK_INEX1 0x0200 -#define _FPU_MASK_INEX2 0x0100 +# define _FPU_MASK_BSUN 0x8000 +# define _FPU_MASK_SNAN 0x4000 +# define _FPU_MASK_OPERR 0x2000 +# define _FPU_MASK_OVFL 0x1000 +# define _FPU_MASK_UNFL 0x0800 +# define _FPU_MASK_DZ 0x0400 +# define _FPU_MASK_INEX1 0x0200 +# define _FPU_MASK_INEX2 0x0100 /* precision control */ -#define _FPU_EXTENDED 0x00 /* RECOMMENDED */ -#define _FPU_DOUBLE 0x80 -#define _FPU_SINGLE 0x40 /* DO NOT USE */ +# ifdef __mcoldfire__ +# define _FPU_DOUBLE 0x00 +# else +# define _FPU_EXTENDED 0x00 /* RECOMMENDED */ +# define _FPU_DOUBLE 0x80 +# endif +# define _FPU_SINGLE 0x40 /* DO NOT USE */ /* rounding control */ -#define _FPU_RC_NEAREST 0x00 /* RECOMMENDED */ -#define _FPU_RC_ZERO 0x10 -#define _FPU_RC_DOWN 0x20 -#define _FPU_RC_UP 0x30 +# define _FPU_RC_NEAREST 0x00 /* RECOMMENDED */ +# define _FPU_RC_ZERO 0x10 +# define _FPU_RC_DOWN 0x20 +# define _FPU_RC_UP 0x30 -#define _FPU_RESERVED 0xFFFF000F /* Reserved bits in fpucr */ +# ifdef __mcoldfire__ +# define _FPU_RESERVED 0xFFFF800F +# else +# define _FPU_RESERVED 0xFFFF000F /* Reserved bits in fpucr */ +# endif /* Now two recommended fpucr */ /* The fdlibm code requires no interrupts for exceptions. Don't change the rounding mode, it would break long double I/O! */ -#define _FPU_DEFAULT 0x00000000 +# define _FPU_DEFAULT 0x00000000 /* IEEE: same as above, but exceptions. We must make it non-zero so that __setfpucw works. This bit will be ignored. */ -#define _FPU_IEEE 0x00000001 +# define _FPU_IEEE 0x00000001 + +/* Macros for accessing the hardware control word. */ +# define _FPU_GETCW(cw) __asm__ ("fmove%.l %!, %0" : "=dm" (cw)) +# define _FPU_SETCW(cw) __asm__ volatile ("fmove%.l %0, %!" : : "dm" (cw)) +#endif /* Type of the control word. */ typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__))); -/* Macros for accessing the hardware control word. */ -#define _FPU_GETCW(cw) __asm__ ("fmove%.l %!, %0" : "=dm" (cw)) -#define _FPU_SETCW(cw) __asm__ __volatile__ ("fmove%.l %0, %!" : : "dm" (cw)) - -#if 0 /* Default control word set at startup. */ extern fpu_control_t __fpu_control; -#endif #endif /* _M68K_FPU_CONTROL_H */ diff --git a/libc/sysdeps/linux/m68k/setjmp.S b/libc/sysdeps/linux/m68k/setjmp.S index 5f05b8591..d10163ec6 100644 --- a/libc/sysdeps/linux/m68k/setjmp.S +++ b/libc/sysdeps/linux/m68k/setjmp.S @@ -14,7 +14,9 @@ __sigsetjmp: moveal %sp@(4), %a0 movel %sp@(0), %a0@(JB_PC) moveml %d2-%d7/%a2-%a7, %a0@(JB_REGS) -#if defined __HAVE_68881__ || defined __UCLIBC_HAS_FPU__ +#if defined(__mcffpu__) && defined (__UCLIBC_HAS_FPU__) + fmovemd %fp2-%fp7, %a0@(JB_FPREGS) +#elif defined(__HAVE_68881__) fmovemx %fp2-%fp7, %a0@(JB_FPREGS) #endif clrl %d0 diff --git a/libc/sysdeps/linux/mips/bits/fenv.h b/libc/sysdeps/linux/mips/bits/fenv.h index 944101f75..25ae4d9ca 100644 --- a/libc/sysdeps/linux/mips/bits/fenv.h +++ b/libc/sysdeps/linux/mips/bits/fenv.h @@ -1,5 +1,4 @@ -/* Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. +/* Copyright (C) 1998-2025 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -12,31 +11,38 @@ 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/>. */ + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ #ifndef _FENV_H # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." #endif +#ifdef __mips_hard_float + /* Define bits representing the exception. We use the bit positions of the appropriate bits in the FPU control word. */ enum { - FE_INEXACT = 0x04, -#define FE_INEXACT FE_INEXACT - FE_UNDERFLOW = 0x08, -#define FE_UNDERFLOW FE_UNDERFLOW - FE_OVERFLOW = 0x10, -#define FE_OVERFLOW FE_OVERFLOW - FE_DIVBYZERO = 0x20, -#define FE_DIVBYZERO FE_DIVBYZERO - FE_INVALID = 0x40, -#define FE_INVALID FE_INVALID + FE_INEXACT = +# define FE_INEXACT 0x04 + FE_INEXACT, + FE_UNDERFLOW = +# define FE_UNDERFLOW 0x08 + FE_UNDERFLOW, + FE_OVERFLOW = +# define FE_OVERFLOW 0x10 + FE_OVERFLOW, + FE_DIVBYZERO = +# define FE_DIVBYZERO 0x20 + FE_DIVBYZERO, + FE_INVALID = +# define FE_INVALID 0x40 + FE_INVALID, }; -#define FE_ALL_EXCEPT \ +# define FE_ALL_EXCEPT \ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) /* The MIPS FPU supports all of the four defined rounding modes. We @@ -44,16 +50,38 @@ enum for the appropriate macros. */ enum { - FE_TONEAREST = 0x0, -#define FE_TONEAREST FE_TONEAREST - FE_TOWARDZERO = 0x1, -#define FE_TOWARDZERO FE_TOWARDZERO - FE_UPWARD = 0x2, -#define FE_UPWARD FE_UPWARD - FE_DOWNWARD = 0x3 -#define FE_DOWNWARD FE_DOWNWARD + FE_TONEAREST = +# define FE_TONEAREST 0x0 + FE_TONEAREST, + FE_TOWARDZERO = +# define FE_TOWARDZERO 0x1 + FE_TOWARDZERO, + FE_UPWARD = +# define FE_UPWARD 0x2 + FE_UPWARD, + FE_DOWNWARD = +# define FE_DOWNWARD 0x3 + FE_DOWNWARD }; +#else + +/* In the soft-float case, only rounding to nearest is supported, with + no exceptions. */ + +enum + { + __FE_UNDEFINED = -1, + + FE_TONEAREST = +# define FE_TONEAREST 0x0 + FE_TONEAREST + }; + +# define FE_ALL_EXCEPT 0 + +#endif + /* Type representing exception flags. */ typedef unsigned short int fexcept_t; @@ -70,7 +98,13 @@ fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((const fenv_t *) -1) -#ifdef __USE_GNU +#if defined __USE_GNU && defined __mips_hard_float /* Floating-point environment where none of the exception is masked. */ # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif + +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) diff --git a/libc/sysdeps/linux/mips/bits/msq.h b/libc/sysdeps/linux/mips/bits/msq.h index bcf1073e8..141b1ff9f 100644 --- a/libc/sysdeps/linux/mips/bits/msq.h +++ b/libc/sysdeps/linux/mips/bits/msq.h @@ -35,30 +35,58 @@ typedef unsigned long int msglen_t; /* Structure of record for one message inside the kernel. The type `struct msg' is opaque. */ +#if (__WORDSIZE == 32) && defined(__MIPSEL__) struct msqid_ds { struct ipc_perm msg_perm; /* structure describing operation permission */ -#if (__WORDSIZE == 32) && !defined(__MIPSEL__) - unsigned long __unused1; -#endif - __time_t msg_stime; /* time of last msgsnd command */ -#if (__WORDSIZE == 32) && defined(__MIPSEL__) - unsigned long __unused1; -#endif -#if (__WORDSIZE == 32) && !defined(__MIPSEL__) - unsigned long __unused2; -#endif - __time_t msg_rtime; /* time of last msgrcv command */ -#if (__WORDSIZE == 32) && defined(__MIPSEL__) - unsigned long __unused2; -#endif -#if (__WORDSIZE == 32) && !defined(__MIPSEL__) - unsigned long __unused3; -#endif - __time_t msg_ctime; /* time of last change */ -#if (__WORDSIZE == 32) && defined(__MIPSEL__) - unsigned long __unused3; -#endif +# if defined(__UCLIBC_USE_TIME64__) + unsigned long msg_stime_internal_1; /* time of last msgsnd command */ + unsigned long msg_stime_internal_2; + unsigned long msg_rtime_internal_1; /* time of last msgrcv command */ + unsigned long msg_rtime_internal_2; + unsigned long msg_ctime_internal_1; /* time of last change */ + unsigned long msg_ctime_internal_2; +# else + __time_t msg_stime; + unsigned long int __uclibc_unused1; + __time_t msg_rtime; + unsigned long int __uclibc_unused2; + __time_t msg_ctime; + unsigned long int __uclibc_unused3; +# endif + unsigned long int __msg_cbytes; /* current number of bytes on queue */ + msgqnum_t msg_qnum; /* number of messages currently on queue */ + msglen_t msg_qbytes; /* max number of bytes allowed on queue */ + __pid_t msg_lspid; /* pid of last msgsnd() */ + __pid_t msg_lrpid; /* pid of last msgrcv() */ + unsigned long int __uclibc_unused4; + unsigned long int __uclibc_unused5; +# if defined(__UCLIBC_USE_TIME64__) + __time_t msg_stime; + __time_t msg_rtime; + __time_t msg_ctime; +# endif +}; + +#elif (__WORDSIZE == 32) && defined(__MIPSEB__) +struct msqid_ds +{ + struct ipc_perm msg_perm; /* structure describing operation permission */ +# if defined(__UCLIBC_USE_TIME64__) + unsigned long msg_stime_internal_2; /* time of last msgsnd command */ + unsigned long msg_stime_internal_1; + unsigned long msg_rtime_internal_2; /* time of last msgrcv command */ + unsigned long msg_rtime_internal_1; + unsigned long msg_ctime_internal_2; /* time of last change */ + unsigned long msg_ctime_internal_1; +# else + unsigned long int __uclibc_unused1; + __time_t msg_stime; + unsigned long int __uclibc_unused2; + __time_t msg_rtime; + unsigned long int __uclibc_unused3; + __time_t msg_ctime; +# endif unsigned long int __msg_cbytes; /* current number of bytes on queue */ msgqnum_t msg_qnum; /* number of messages currently on queue */ msglen_t msg_qbytes; /* max number of bytes allowed on queue */ @@ -66,8 +94,32 @@ struct msqid_ds __pid_t msg_lrpid; /* pid of last msgrcv() */ unsigned long int __uclibc_unused4; unsigned long int __uclibc_unused5; +# if defined(__UCLIBC_USE_TIME64__) + __time_t msg_stime; + __time_t msg_rtime; + __time_t msg_ctime; +# endif +}; + +#else + +struct msqid_ds +{ + struct ipc_perm msg_perm; /* structure describing operation permission */ + __time_t msg_stime; /* time of last msgsnd command */ + __time_t msg_rtime; /* time of last msgrcv command */ + __time_t msg_ctime; /* time of last change */ + unsigned long int __msg_cbytes; /* current number of bytes on queue */ + msgqnum_t msg_qnum; /* number of messages currently on queue */ + msglen_t msg_qbytes; /* max number of bytes allowed on queue */ + __pid_t msg_lspid; /* pid of last msgsnd() */ + __pid_t msg_lrpid; /* pid of last msgrcv() */ + unsigned long int __uclibc_unused4; + unsigned long int __uclibc_unused5; }; +#endif + #ifdef __USE_MISC # define msg_cbytes __msg_cbytes diff --git a/libc/sysdeps/linux/mips/bits/sem.h b/libc/sysdeps/linux/mips/bits/sem.h index 35eaa05c3..230d04868 100644 --- a/libc/sysdeps/linux/mips/bits/sem.h +++ b/libc/sysdeps/linux/mips/bits/sem.h @@ -38,22 +38,23 @@ struct semid_ds { struct ipc_perm sem_perm; /* operation permission struct */ -#if defined(__UCLIBC_USE_TIME64__) +#if (__WORDSIZE == 32) && defined(__UCLIBC_USE_TIME64__) unsigned long int __sem_otime_internal_1; /* last semop() time */ - unsigned long int __sem_otime_internal_2; unsigned long int __sem_ctime_internal_1; /* last time changed by semctl() */ - unsigned long int __sem_ctime_internal_2; #else __time_t sem_otime; /* last semop() time */ __time_t sem_ctime; /* last time changed by semctl() */ #endif unsigned long int sem_nsems; /* number of semaphores in set */ -#if defined(__UCLIBC_USE_TIME64__) +#if (__WORDSIZE == 32) && defined(__UCLIBC_USE_TIME64__) + unsigned long int __sem_otime_internal_2; + unsigned long int __sem_ctime_internal_2; __time_t sem_otime; __time_t sem_ctime; -#endif +#else unsigned long int __uclibc_unused1; unsigned long int __uclibc_unused2; +#endif }; /* The user should define a union like the following to use it for arguments diff --git a/libc/sysdeps/linux/mips/bits/shm.h b/libc/sysdeps/linux/mips/bits/shm.h index bb87ba13d..1855a50b2 100644 --- a/libc/sysdeps/linux/mips/bits/shm.h +++ b/libc/sysdeps/linux/mips/bits/shm.h @@ -46,14 +46,32 @@ struct shmid_ds { struct ipc_perm shm_perm; /* operation permission struct */ size_t shm_segsz; /* size of segment in bytes */ - __time_t shm_atime; /* time of last shmat() */ - __time_t shm_dtime; /* time of last shmdt() */ - __time_t shm_ctime; /* time of last change by shmctl() */ +#if (__WORDSIZE == 32) && defined(__UCLIBC_USE_TIME64__) + unsigned long int shm_atime_internal_1; /* time of last shmat() */ + unsigned long int shm_dtime_internal_1; /* time of last shmdt() */ + unsigned long int shm_ctime_internal_1; /* time of last change by shmctl() */ +#else + __time_t shm_atime; + __time_t shm_dtime; + __time_t shm_ctime; +#endif __pid_t shm_cpid; /* pid of creator */ __pid_t shm_lpid; /* pid of last shmop */ shmatt_t shm_nattch; /* number of current attaches */ - unsigned long int __uclibc_unused1; - unsigned long int __uclibc_unused2; +#if (__WORDSIZE == 32) && defined(__UCLIBC_USE_TIME64__) + unsigned short int shm_atime_internal_2; /* time of last shmat() */ + unsigned short int shm_dtime_internal_2; /* time of last shmdt() */ + unsigned short int shm_ctime_internal_2; /* time of last change by shmctl() */ + unsigned short int __uclibc_unused1; + __time_t shm_atime; + __time_t shm_dtime; + __time_t shm_ctime; +#else + unsigned short int __uclibc_unused1; + unsigned short int __uclibc_unused2; + unsigned short int __uclibc_unused3; + unsigned short int __uclibc_unused4; +#endif }; #ifdef __USE_MISC diff --git a/libc/sysdeps/linux/mips/bits/syscalls.h b/libc/sysdeps/linux/mips/bits/syscalls.h index 13728ac55..64b42ffb1 100644 --- a/libc/sysdeps/linux/mips/bits/syscalls.h +++ b/libc/sysdeps/linux/mips/bits/syscalls.h @@ -184,7 +184,7 @@ ({ \ long _sys_result; \ \ - FORCE_FRAME_POINTER; \ + int* array = FORCE_FRAME_POINTER; \ { \ register long __v0 __asm__("$2") ncs_init; \ register long __a0 __asm__("$4") = (long) arg1; \ @@ -193,15 +193,16 @@ register long __a3 __asm__("$7") = (long) arg4; \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ - "subu\t$29, 32\n\t" \ + "subu\t$29, 32\n\t" \ "sw\t%6, 16($29)\n\t" \ cs_init \ "syscall\n\t" \ - "addiu\t$29, 32\n\t" \ - ".set\treorder" \ + "addiu\t$29, 32\n\t" \ + "addiu\t%7, %7, 0\n\t" \ + ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), \ - "r" ((long)arg5) \ + "r" ((long)arg5), "r" (array) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ @@ -213,7 +214,7 @@ ({ \ long _sys_result; \ \ - FORCE_FRAME_POINTER; \ + int* array = FORCE_FRAME_POINTER; \ { \ register long __v0 __asm__("$2") ncs_init; \ register long __a0 __asm__("$4") = (long) arg1; \ @@ -221,17 +222,18 @@ register long __a2 __asm__("$6") = (long) arg3; \ register long __a3 __asm__("$7") = (long) arg4; \ __asm__ __volatile__ ( \ - ".set\tnoreorder\n\t" \ - "subu\t$29, 32\n\t" \ + ".set\tnoreorder\n\t" \ + "subu\t$29, 32\n\t" \ "sw\t%6, 16($29)\n\t" \ "sw\t%7, 20($29)\n\t" \ cs_init \ "syscall\n\t" \ - "addiu\t$29, 32\n\t" \ - ".set\treorder" \ + "addiu\t$29, 32\n\t" \ + "addiu\t%8, %8, 0\n\t" \ + ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), \ - "r" ((long)arg5), "r" ((long)arg6) \ + "r" ((long)arg5), "r" ((long)arg6), "r" (array) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ @@ -243,7 +245,7 @@ ({ \ long _sys_result; \ \ - FORCE_FRAME_POINTER; \ + int* array = FORCE_FRAME_POINTER; \ { \ register long __v0 __asm__("$2") ncs_init; \ register long __a0 __asm__("$4") = (long) arg1; \ @@ -252,17 +254,19 @@ register long __a3 __asm__("$7") = (long) arg4; \ __asm__ __volatile__ ( \ ".set\tnoreorder\n\t" \ - "subu\t$29, 32\n\t" \ + "subu\t$29, 32\n\t" \ "sw\t%6, 16($29)\n\t" \ "sw\t%7, 20($29)\n\t" \ "sw\t%8, 24($29)\n\t" \ cs_init \ "syscall\n\t" \ - "addiu\t$29, 32\n\t" \ - ".set\treorder" \ + "addiu\t$29, 32\n\t" \ + "addiu\t%9, %9, 0\n\t" \ + ".set\treorder" \ : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), \ - "r" ((long)arg5), "r" ((long)arg6), "r" ((long)arg7) \ + "r" ((long)arg5), "r" ((long)arg6), "r" ((long)arg7), \ + "r" (array) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ _sys_result = __v0; \ diff --git a/libc/sysdeps/linux/mips/fpu_control.h b/libc/sysdeps/linux/mips/fpu_control.h index f855af506..6aa05e4cf 100644 --- a/libc/sysdeps/linux/mips/fpu_control.h +++ b/libc/sysdeps/linux/mips/fpu_control.h @@ -1,7 +1,5 @@ /* FPU control word bits. Mips version. - Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Olaf Flebbe and Ralf Baechle. + Copyright (C) 1996-2025 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -14,8 +12,8 @@ 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/>. */ + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ #ifndef _FPU_CONTROL_H #define _FPU_CONTROL_H @@ -28,7 +26,10 @@ * causing unimplemented operation exception. This bit is only * available for MIPS III and newer. * 23 -> Condition bit - * 22-18 -> reserved (read as 0, write with 0) + * 22-21 -> reserved for architecture implementers + * 20 -> reserved (read as 0, write with 0) + * 19 -> IEEE 754-2008 non-arithmetic ABS.fmt and NEG.fmt enable + * 18 -> IEEE 754-2008 recommended NaN encoding enable * 17 -> cause bit for unimplemented operation * 16 -> cause bit for invalid exception * 15 -> cause bit for division by zero exception @@ -57,43 +58,74 @@ #include <features.h> -/* masking of interrupts */ +#ifdef __mips_soft_float + +#define _FPU_RESERVED 0xffffffff +#define _FPU_DEFAULT 0x00000000 +typedef unsigned int fpu_control_t; +#define _FPU_GETCW(cw) (cw) = 0 +#define _FPU_SETCW(cw) (void) (cw) +extern fpu_control_t __fpu_control; + +#else /* __mips_soft_float */ + +/* Masks for interrupts. */ #define _FPU_MASK_V 0x0800 /* Invalid operation */ #define _FPU_MASK_Z 0x0400 /* Division by zero */ #define _FPU_MASK_O 0x0200 /* Overflow */ #define _FPU_MASK_U 0x0100 /* Underflow */ #define _FPU_MASK_I 0x0080 /* Inexact operation */ -/* flush denormalized numbers to zero */ +/* Flush denormalized numbers to zero. */ #define _FPU_FLUSH_TZ 0x1000000 -/* rounding control */ +/* IEEE 754-2008 compliance control. */ +#define _FPU_ABS2008 0x80000 +#define _FPU_NAN2008 0x40000 + +/* Rounding control. */ #define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */ #define _FPU_RC_ZERO 0x1 #define _FPU_RC_UP 0x2 #define _FPU_RC_DOWN 0x3 +/* Mask for rounding control. */ +#define _FPU_RC_MASK 0x3 -#define _FPU_RESERVED 0xfe3c0000 /* Reserved bits in cw */ +#define _FPU_RESERVED 0xfe8c0000 /* Reserved bits in cw, incl ABS/NAN2008. */ /* The fdlibm code requires strict IEEE double precision arithmetic, and no interrupts for exceptions, rounding to nearest. */ +#ifdef __mips_nan2008 +# define _FPU_DEFAULT 0x000C0000 +#else +# define _FPU_DEFAULT 0x00000000 +#endif -#define _FPU_DEFAULT 0x00000000 - -/* IEEE: same as above, but exceptions */ -#define _FPU_IEEE 0x00000F80 +/* IEEE: same as above, but exceptions. */ +#ifdef __mips_nan2008 +# define _FPU_IEEE 0x000C0F80 +#else +# define _FPU_IEEE 0x00000F80 +#endif /* Type of the control word. */ typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__))); /* Macros for accessing the hardware control word. */ -#define _FPU_GETCW(cw) __asm__ ("cfc1 %0,$31" : "=r" (cw)) -#define _FPU_SETCW(cw) __asm__ ("ctc1 %0,$31" : : "r" (cw)) +extern fpu_control_t __mips_fpu_getcw (void) __THROW; +extern void __mips_fpu_setcw (fpu_control_t) __THROW; +#ifdef __mips16 +# define _FPU_GETCW(cw) do { (cw) = __mips_fpu_getcw (); } while (0) +# define _FPU_SETCW(cw) __mips_fpu_setcw (cw) +#else +# define _FPU_GETCW(cw) __asm__ volatile ("cfc1 %0,$31" : "=r" (cw)) +# define _FPU_SETCW(cw) __asm__ volatile ("ctc1 %0,$31" : : "r" (cw)) +#endif -#if 0 /* Default control word set at startup. */ extern fpu_control_t __fpu_control; -#endif + +#endif /* __mips_soft_float */ #endif /* fpu_control.h */ diff --git a/libc/sysdeps/linux/or1k/bits/fenv.h b/libc/sysdeps/linux/or1k/bits/fenv.h new file mode 100644 index 000000000..4701946ff --- /dev/null +++ b/libc/sysdeps/linux/or1k/bits/fenv.h @@ -0,0 +1,84 @@ +/* Floating point environment, OpenRISC version. + Copyright (C) 2022-2025 Free Software Foundation, Inc. + + 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _FENV_H +# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." +#endif + +#ifdef __or1k_hard_float__ +/* Define bits representing exceptions in the FPCSR status word. */ +enum + { + FE_OVERFLOW = +#define FE_OVERFLOW (1 << 3) + FE_OVERFLOW, + FE_UNDERFLOW = +#define FE_UNDERFLOW (1 << 4) + FE_UNDERFLOW, + FE_INEXACT = +#define FE_INEXACT (1 << 8) + FE_INEXACT, + FE_INVALID = +#define FE_INVALID (1 << 9) + FE_INVALID, + FE_DIVBYZERO = +#define FE_DIVBYZERO (1 << 11) + FE_DIVBYZERO, + }; + +/* All supported exceptions. */ +#define FE_ALL_EXCEPT \ + (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT) + +/* Define bits representing rounding modes in the FPCSR Rmode field. */ +#define FE_TONEAREST (0x0 << 1) +#define FE_TOWARDZERO (0x1 << 1) +#define FE_UPWARD (0x2 << 1) +#define FE_DOWNWARD (0x3 << 1) + +#else + +/* In the soft-float case only rounding to nearest is supported, with + no exceptions. */ + +enum + { + __FE_UNDEFINED = -1, + + FE_TONEAREST = +# define FE_TONEAREST 0x0 + FE_TONEAREST + }; + +# define FE_ALL_EXCEPT 0 + +#endif /* __or1k_hard_float__ */ + +/* Type representing exception flags. */ +typedef unsigned int fexcept_t; + +/* Type representing floating-point environment. */ +typedef unsigned int fenv_t; + +/* If the default argument is used we use this value. */ +#define FE_DFL_ENV ((const fenv_t *) -1l) + +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) diff --git a/libc/sysdeps/linux/or1k/fpu_control.h b/libc/sysdeps/linux/or1k/fpu_control.h new file mode 100644 index 000000000..9abde4f42 --- /dev/null +++ b/libc/sysdeps/linux/or1k/fpu_control.h @@ -0,0 +1,88 @@ +/* FPU control word bits. OpenRISC version. + Copyright (C) 2024-2025 Free Software Foundation, Inc. + + 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _FPU_CONTROL_H +#define _FPU_CONTROL_H + +#ifndef __or1k_hard_float__ + +# define _FPU_RESERVED 0xffffffff +# define _FPU_DEFAULT 0x00000000 +# define _FPU_GETCW(cw) (cw) = 0 +# define _FPU_SETCW(cw) (void) (cw) + +#else /* __or1k_hard_float__ */ + +/* Layout of FPCSR: + + The bits of the FPCSR are defined as follows, this should help + explain how the masks below have come to be. + + +-----------+----------------------------+-----+----+ + | 32 - 12 | 11 10 9 8 7 6 5 4 3 | 2-1 | 0 | + +-----------+----------------------------+-----+----+ + | Reserved | DZ IN IV IX Z QN SN UN OV | RM | EE | + +-----------+----------------------------+-----+----+ + + Exception flags: + + DZ - divide by zero flag. + IN - infinite flag. + IV - invalid flag. + IX - inexact flag. + Z - zero flag. + QN - qnan flag. + SN - snan flag. + UN - underflow flag. + OV - overflow flag. + + Rounding modes: + + The FPCSR bits 2-1 labeled above as RM specify the rounding mode. + + 00 - round to nearest + 01 - round to zero + 10 - round to positive infinity + 11 - round to negative infinity + + Enabling exceptions: + + EE - set to enable FPU exceptions. + + */ + +# define _FPU_RESERVED 0xfffff000 +/* Default: rounding to nearest with exceptions disabled. */ +# define _FPU_DEFAULT 0 +/* IEEE: Same as above with exceptions enabled. */ +# define _FPU_IEEE (_FPU_DEFAULT | 1) + +# define _FPU_FPCSR_RM_MASK (0x3 << 1) + +/* Macros for accessing the hardware control word. */ +# define _FPU_GETCW(cw) __asm__ volatile ("l.mfspr %0,r0,20" : "=r" (cw)) +# define _FPU_SETCW(cw) __asm__ volatile ("l.mtspr r0,%0,20" : : "r" (cw)) + +#endif /* __or1k_hard_float__ */ + +/* Type of the control word. */ +typedef unsigned int fpu_control_t; + +/* Default control word set at startup. */ +extern fpu_control_t __fpu_control; + +#endif /* fpu_control.h */ diff --git a/libc/sysdeps/linux/riscv32/bits/fenv.h b/libc/sysdeps/linux/riscv32/bits/fenv.h index a3f8031af..a6b828a76 100644 --- a/libc/sysdeps/linux/riscv32/bits/fenv.h +++ b/libc/sysdeps/linux/riscv32/bits/fenv.h @@ -64,10 +64,8 @@ typedef unsigned int fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((__const fenv_t *) -1) -#if __GLIBC_USE (IEC_60559_BFP_EXT) /* Type representing floating-point control modes. */ typedef unsigned int femode_t; /* Default floating-point control modes. */ # define FE_DFL_MODE ((const femode_t *) -1L) -#endif diff --git a/libc/sysdeps/linux/riscv32/bits/shm.h b/libc/sysdeps/linux/riscv32/bits/shm.h index 8a11c7050..9190c562b 100644 --- a/libc/sysdeps/linux/riscv32/bits/shm.h +++ b/libc/sysdeps/linux/riscv32/bits/shm.h @@ -37,12 +37,18 @@ struct shmid_ds { struct ipc_perm shm_perm; /* operation permission struct */ size_t shm_segsz; /* size of segment in bytes */ +#if defined(__UCLIBC_USE_TIME64__) + __time_t shm_atime; + __time_t shm_dtime; + __time_t shm_ctime; +#else __time_t shm_atime; /* time of last shmat() */ unsigned long int __uclibc_unused1; __time_t shm_dtime; /* time of last shmdt() */ unsigned long int __uclibc_unused2; __time_t shm_ctime; /* time of last change by shmctl() */ unsigned long int __uclibc_unused3; +#endif __pid_t shm_cpid; /* pid of creator */ __pid_t shm_lpid; /* pid of last shmop */ shmatt_t shm_nattch; /* number of current attaches */ diff --git a/libc/sysdeps/linux/riscv64/bits/fenv.h b/libc/sysdeps/linux/riscv64/bits/fenv.h index a3f8031af..a6b828a76 100644 --- a/libc/sysdeps/linux/riscv64/bits/fenv.h +++ b/libc/sysdeps/linux/riscv64/bits/fenv.h @@ -64,10 +64,8 @@ typedef unsigned int fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((__const fenv_t *) -1) -#if __GLIBC_USE (IEC_60559_BFP_EXT) /* Type representing floating-point control modes. */ typedef unsigned int femode_t; /* Default floating-point control modes. */ # define FE_DFL_MODE ((const femode_t *) -1L) -#endif diff --git a/libc/sysdeps/linux/riscv64/bits/shm.h b/libc/sysdeps/linux/riscv64/bits/shm.h index 8a11c7050..bfb603499 100644 --- a/libc/sysdeps/linux/riscv64/bits/shm.h +++ b/libc/sysdeps/linux/riscv64/bits/shm.h @@ -38,16 +38,13 @@ struct shmid_ds struct ipc_perm shm_perm; /* operation permission struct */ size_t shm_segsz; /* size of segment in bytes */ __time_t shm_atime; /* time of last shmat() */ - unsigned long int __uclibc_unused1; __time_t shm_dtime; /* time of last shmdt() */ - unsigned long int __uclibc_unused2; __time_t shm_ctime; /* time of last change by shmctl() */ - unsigned long int __uclibc_unused3; __pid_t shm_cpid; /* pid of creator */ __pid_t shm_lpid; /* pid of last shmop */ shmatt_t shm_nattch; /* number of current attaches */ - unsigned long int __uclibc_unused4; - unsigned long int __uclibc_unused5; + unsigned long int __uclibc_unused1; + unsigned long int __uclibc_unused2; }; #ifdef __USE_MISC diff --git a/libc/sysdeps/linux/sh/bits/fenv.h b/libc/sysdeps/linux/sh/bits/fenv.h index 38c303ff2..349e7ddde 100644 --- a/libc/sysdeps/linux/sh/bits/fenv.h +++ b/libc/sysdeps/linux/sh/bits/fenv.h @@ -1,5 +1,4 @@ -/* Copyright (C) 1999, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. +/* Copyright (C) 1999-2025 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -13,7 +12,7 @@ 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/>. */ + <https://www.gnu.org/licenses/>. */ #ifndef _FENV_H # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." @@ -24,34 +23,39 @@ of the appropriate bits in the FPU control word. */ enum { - FE_INEXACT = 0x04, -#define FE_INEXACT FE_INEXACT - FE_UNDERFLOW = 0x08, -#define FE_UNDERFLOW FE_UNDERFLOW - FE_OVERFLOW = 0x10, -#define FE_OVERFLOW FE_OVERFLOW - FE_DIVBYZERO = 0x20, -#define FE_DIVBYZERO FE_DIVBYZERO - FE_INVALID = 0x40, -#define FE_INVALID FE_INVALID + FE_INEXACT = +#define FE_INEXACT 0x04 + FE_INEXACT, + FE_UNDERFLOW = +#define FE_UNDERFLOW 0x08 + FE_UNDERFLOW, + FE_OVERFLOW = +#define FE_OVERFLOW 0x10 + FE_OVERFLOW, + FE_DIVBYZERO = +#define FE_DIVBYZERO 0x20 + FE_DIVBYZERO, + FE_INVALID = +#define FE_INVALID 0x40 + FE_INVALID, }; #define FE_ALL_EXCEPT \ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) -/* The SH FPU supports all of the four defined rounding modes. We - use again the bit positions in the FPU control word as the values - for the appropriate macros. */ +/* The SH FPU supports two of the four defined rounding modes: round to nearest + and round to zero. We use again the bit positions in the FPU control word + as the values for the appropriate macros. */ enum { - FE_TONEAREST = 0x0, -#define FE_TONEAREST FE_TONEAREST - FE_TOWARDZERO = 0x1, -#define FE_TOWARDZERO FE_TOWARDZERO - FE_UPWARD = 0x2, -#define FE_UPWARD FE_UPWARD - FE_DOWNWARD = 0x3 -#define FE_DOWNWARD FE_DOWNWARD + __FE_UNDEFINED = -1, + + FE_TONEAREST = +#define FE_TONEAREST 0x0 + FE_TONEAREST, + FE_TOWARDZERO = +#define FE_TOWARDZERO 0x1 + FE_TOWARDZERO, }; @@ -68,4 +72,10 @@ typedef struct fenv_t; /* If the default argument is used we use this value. */ -#define FE_DFL_ENV ((fenv_t *) -1) +#define FE_DFL_ENV ((const fenv_t *) -1) + +/* Type representing floating-point control modes. */ +typedef unsigned int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) diff --git a/libc/sysdeps/linux/sh/fpu_control.h b/libc/sysdeps/linux/sh/fpu_control.h index 8143041fe..d5f401f91 100644 --- a/libc/sysdeps/linux/sh/fpu_control.h +++ b/libc/sysdeps/linux/sh/fpu_control.h @@ -1,6 +1,5 @@ /* FPU control word definitions. SH version. - Copyright (C) 1999, 2000, 2009 Free Software Foundation, Inc. - This file is part of the GNU C Library. + Copyright (C) 1999-2025 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -14,14 +13,23 @@ 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/>. */ + <https://www.gnu.org/licenses/>. */ #ifndef _FPU_CONTROL_H #define _FPU_CONTROL_H -#ifndef __SH4__ -#error This file is only correct for sh4 -#endif +#if !defined(__SH_FPU_ANY__) + +#define _FPU_RESERVED 0xffffffff +#define _FPU_DEFAULT 0x00000000 +typedef unsigned int fpu_control_t; +#define _FPU_GETCW(cw) (cw) = 0 +#define _FPU_SETCW(cw) (void) (cw) +extern fpu_control_t __fpu_control; + +#else + +#include <features.h> /* masking of interrupts */ #define _FPU_MASK_VM 0x0800 /* Invalid operation */ @@ -48,16 +56,20 @@ typedef unsigned int fpu_control_t; #define _FPU_GETCW(cw) __asm__ ("sts fpscr,%0" : "=r" (cw)) #if defined __GNUC__ -/* GCC provides this function */ +__BEGIN_DECLS + +/* GCC provides this function. */ extern void __set_fpscr (unsigned long); #define _FPU_SETCW(cw) __set_fpscr ((cw)) #else #define _FPU_SETCW(cw) __asm__ ("lds %0,fpscr" : : "r" (cw)) #endif -#if 0 /* Default control word set at startup. */ extern fpu_control_t __fpu_control; -#endif + +__END_DECLS + +#endif /* __SH_FPU_ANY__ */ #endif /* _FPU_CONTROL_H */ diff --git a/libc/sysdeps/linux/sparc/bits/fenv.h b/libc/sysdeps/linux/sparc/bits/fenv.h index 79ab8cefa..83b32cc51 100644 --- a/libc/sysdeps/linux/sparc/bits/fenv.h +++ b/libc/sysdeps/linux/sparc/bits/fenv.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1997-2025 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -12,26 +12,34 @@ 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/>. */ + <https://www.gnu.org/licenses/>. */ #ifndef _FENV_H # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." #endif +#include <bits/wordsize.h> + + /* Define bits representing the exception. We use the bit positions of the appropriate accrued exception bits from the FSR. */ enum { - FE_INVALID = (1 << 9), -#define FE_INVALID FE_INVALID - FE_OVERFLOW = (1 << 8), -#define FE_OVERFLOW FE_OVERFLOW - FE_UNDERFLOW = (1 << 7), -#define FE_UNDERFLOW FE_UNDERFLOW - FE_DIVBYZERO = (1 << 6), -#define FE_DIVBYZERO FE_DIVBYZERO - FE_INEXACT = (1 << 5) -#define FE_INEXACT FE_INEXACT + FE_INVALID = +#define FE_INVALID (1 << 9) + FE_INVALID, + FE_OVERFLOW = +#define FE_OVERFLOW (1 << 8) + FE_OVERFLOW, + FE_UNDERFLOW = +#define FE_UNDERFLOW (1 << 7) + FE_UNDERFLOW, + FE_DIVBYZERO = +#define FE_DIVBYZERO (1 << 6) + FE_DIVBYZERO, + FE_INEXACT = +#define FE_INEXACT (1 << 5) + FE_INEXACT }; #define FE_ALL_EXCEPT \ @@ -42,14 +50,18 @@ enum for the appropriate macros. */ enum { - FE_TONEAREST = (0U << 30), -#define FE_TONEAREST FE_TONEAREST - FE_TOWARDZERO = (1U << 30), -#define FE_TOWARDZERO FE_TOWARDZERO - FE_UPWARD = (2U << 30), -#define FE_UPWARD FE_UPWARD - FE_DOWNWARD = (3U << 30) -#define FE_DOWNWARD FE_DOWNWARD + FE_TONEAREST = +#define FE_TONEAREST (0 << 30) + FE_TONEAREST, + FE_TOWARDZERO = +#define FE_TOWARDZERO (1 << 30) + FE_TOWARDZERO, + FE_UPWARD = +#define FE_UPWARD (-0x7fffffff - 1) /* (2 << 30) */ + FE_UPWARD, + FE_DOWNWARD = +#define FE_DOWNWARD (-0x40000000) /* (3 << 30) */ + FE_DOWNWARD }; #define __FE_ROUND_MASK (3U << 30) @@ -70,6 +82,8 @@ typedef unsigned long int fenv_t; # define FE_NOMASK_ENV ((const fenv_t *) -2) #endif -/* For internal use only: access the fp state register. */ -#define __fenv_stfsr(X) __asm__ ("st %%fsr,%0" : "=m" (X)) -#define __fenv_ldfsr(X) __asm__ __volatile__ ("ld %0,%%fsr" : : "m" (X)) +/* Type representing floating-point control modes. */ +typedef unsigned long int femode_t; + +/* Default floating-point control modes. */ +# define FE_DFL_MODE ((const femode_t *) -1L) diff --git a/libc/sysdeps/linux/sparc/fpu_control.h b/libc/sysdeps/linux/sparc/fpu_control.h index 57f1dbb67..542f9fb1b 100644 --- a/libc/sysdeps/linux/sparc/fpu_control.h +++ b/libc/sysdeps/linux/sparc/fpu_control.h @@ -1,6 +1,5 @@ /* FPU control word bits. SPARC version. - Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. - Contributed by Miguel de Icaza + Copyright (C) 1997-2025 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -14,13 +13,14 @@ 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/>. */ + <https://www.gnu.org/licenses/>. */ #ifndef _FPU_CONTROL_H #define _FPU_CONTROL_H 1 #include <features.h> +#include <bits/wordsize.h> /* masking of interrupts */ #define _FPU_MASK_IM 0x08000000 @@ -41,7 +41,7 @@ #define _FPU_RC_ZERO 0x40000000 #define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */ -#define _FPU_RESERVED 0x30300000 /* Reserved bits in cw */ +#define _FPU_RESERVED 0x303e0000 /* Reserved bits in cw */ /* Now two recommended cw */ @@ -56,12 +56,20 @@ /* Type of the control word. */ typedef unsigned long int fpu_control_t; -#define _FPU_GETCW(cw) __asm__ ("st %%fsr,%0" : "=m" (*&cw)) -#define _FPU_SETCW(cw) __asm__ ("ld %0,%%fsr" : : "m" (*&cw)) +#if __WORDSIZE == 64 +# define _FPU_GETCW(cw) __asm__ __volatile__ ("stx %%fsr,%0" : "=m" (*&cw)) +# define _FPU_SETCW(cw) __asm__ __volatile__ ("ldx %0,%%fsr" : : "m" (*&cw)) +#else +# ifdef __leon__ + /* Prevent stfsr from being placed directly after other fp instruction. */ +# define _FPU_GETCW(cw) __asm__ __volatile__ ("nop; st %%fsr,%0" : "=m" (*&cw)) +# else +# define _FPU_GETCW(cw) __asm__ __volatile__ ("st %%fsr,%0" : "=m" (*&cw)) +# endif +# define _FPU_SETCW(cw) __asm__ __volatile__ ("ld %0,%%fsr" : : "m" (*&cw)) +#endif -#if 0 /* Default control word set at startup. */ extern fpu_control_t __fpu_control; -#endif #endif /* fpu_control.h */ |