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-rw-r--r--libc/sysdeps/linux/aarch64/bits/fcntl.h24
-rw-r--r--libc/sysdeps/linux/aarch64/bits/fenv.h78
-rw-r--r--libc/sysdeps/linux/aarch64/bits/hwcap.h99
-rw-r--r--libc/sysdeps/linux/aarch64/bits/shm.h87
-rw-r--r--libc/sysdeps/linux/aarch64/crt1.S14
-rw-r--r--libc/sysdeps/linux/aarch64/fpu_control.h102
-rw-r--r--libc/sysdeps/linux/aarch64/sys/ucontext.h4
7 files changed, 385 insertions, 23 deletions
diff --git a/libc/sysdeps/linux/aarch64/bits/fcntl.h b/libc/sysdeps/linux/aarch64/bits/fcntl.h
index c143ba9c9..024344eec 100644
--- a/libc/sysdeps/linux/aarch64/bits/fcntl.h
+++ b/libc/sysdeps/linux/aarch64/bits/fcntl.h
@@ -94,8 +94,6 @@
#ifdef __USE_GNU
# define F_SETSIG 10 /* Set number of signal to be sent. */
# define F_GETSIG 11 /* Get number of signal to be sent. */
-# define F_SETOWN_EX 15 /* Get owner (thread receiving SIGIO). */
-# define F_GETOWN_EX 16 /* Set owner (thread receiving SIGIO). */
#endif
@@ -170,25 +168,6 @@ struct flock64
};
#endif
-
-#ifdef __USE_GNU
-/* Owner types. */
-enum __pid_type
- {
- F_OWNER_TID = 0, /* Kernel thread. */
- F_OWNER_PID, /* Process. */
- F_OWNER_PGRP, /* Process group. */
- F_OWNER_GID = F_OWNER_PGRP /* Alternative, obsolete name. */
- };
-
-/* Structure to use with F_GETOWN_EX and F_SETOWN_EX. */
-struct f_owner_ex
- {
- enum __pid_type type; /* Owner type of ID. */
- __pid_t pid; /* ID of owner. */
- };
-#endif
-
/* Define some more compatibility macros to be backward compatible with
BSD systems which did not managed to hide these kernel macros. */
#ifdef __USE_BSD
@@ -310,3 +289,6 @@ extern int fallocate64 (int __fd, int __mode, __off64_t __offset,
#endif /* use GNU */
__END_DECLS
+
+/* Include generic Linux declarations. */
+#include <bits/fcntl-linux.h>
diff --git a/libc/sysdeps/linux/aarch64/bits/fenv.h b/libc/sysdeps/linux/aarch64/bits/fenv.h
new file mode 100644
index 000000000..4febd2177
--- /dev/null
+++ b/libc/sysdeps/linux/aarch64/bits/fenv.h
@@ -0,0 +1,78 @@
+/* Copyright (C) 2004-2025 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 exceptions in the FPSR status word. */
+enum
+ {
+ FE_INVALID =
+#define FE_INVALID 1
+ FE_INVALID,
+ FE_DIVBYZERO =
+#define FE_DIVBYZERO 2
+ FE_DIVBYZERO,
+ FE_OVERFLOW =
+#define FE_OVERFLOW 4
+ FE_OVERFLOW,
+ FE_UNDERFLOW =
+#define FE_UNDERFLOW 8
+ FE_UNDERFLOW,
+ FE_INEXACT =
+#define FE_INEXACT 16
+ FE_INEXACT,
+ };
+
+/* Amount to shift by to convert an exception bit in FPSR to a an
+ exception bit mask in FPCR. */
+#define FE_EXCEPT_SHIFT 8
+
+/* All supported exceptions. */
+#define FE_ALL_EXCEPT \
+ (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
+
+/* Define bits representing rounding modes in the FPCR Rmode field. */
+#define FE_TONEAREST 0x000000
+#define FE_UPWARD 0x400000
+#define FE_DOWNWARD 0x800000
+#define FE_TOWARDZERO 0xc00000
+
+/* Type representing exception flags. */
+typedef unsigned int fexcept_t;
+
+/* Type representing floating-point environment. */
+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 *) -1l)
+
+#ifdef __USE_GNU
+/* 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/aarch64/bits/hwcap.h b/libc/sysdeps/linux/aarch64/bits/hwcap.h
new file mode 100644
index 000000000..20061f5d1
--- /dev/null
+++ b/libc/sysdeps/linux/aarch64/bits/hwcap.h
@@ -0,0 +1,99 @@
+/* Defines for bits in AT_HWCAP. AArch64 Linux version.
+ Copyright (C) 2016-2023 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/>. */
+
+#if !defined (_SYS_AUXV_H)
+# error "Never include <bits/hwcap.h> directly; use <sys/auxv.h> instead."
+#endif
+
+/* The following must match the kernel's <asm/hwcap.h> and update the
+ list together with sysdeps/unix/sysv/linux/aarch64/dl-procinfo.c. */
+#define HWCAP_FP (1 << 0)
+#define HWCAP_ASIMD (1 << 1)
+#define HWCAP_EVTSTRM (1 << 2)
+#define HWCAP_AES (1 << 3)
+#define HWCAP_PMULL (1 << 4)
+#define HWCAP_SHA1 (1 << 5)
+#define HWCAP_SHA2 (1 << 6)
+#define HWCAP_CRC32 (1 << 7)
+#define HWCAP_ATOMICS (1 << 8)
+#define HWCAP_FPHP (1 << 9)
+#define HWCAP_ASIMDHP (1 << 10)
+#define HWCAP_CPUID (1 << 11)
+#define HWCAP_ASIMDRDM (1 << 12)
+#define HWCAP_JSCVT (1 << 13)
+#define HWCAP_FCMA (1 << 14)
+#define HWCAP_LRCPC (1 << 15)
+#define HWCAP_DCPOP (1 << 16)
+#define HWCAP_SHA3 (1 << 17)
+#define HWCAP_SM3 (1 << 18)
+#define HWCAP_SM4 (1 << 19)
+#define HWCAP_ASIMDDP (1 << 20)
+#define HWCAP_SHA512 (1 << 21)
+#define HWCAP_SVE (1 << 22)
+#define HWCAP_ASIMDFHM (1 << 23)
+#define HWCAP_DIT (1 << 24)
+#define HWCAP_USCAT (1 << 25)
+#define HWCAP_ILRCPC (1 << 26)
+#define HWCAP_FLAGM (1 << 27)
+#define HWCAP_SSBS (1 << 28)
+#define HWCAP_SB (1 << 29)
+#define HWCAP_PACA (1 << 30)
+#define HWCAP_PACG (1UL << 31)
+
+#define HWCAP2_DCPODP (1 << 0)
+#define HWCAP2_SVE2 (1 << 1)
+#define HWCAP2_SVEAES (1 << 2)
+#define HWCAP2_SVEPMULL (1 << 3)
+#define HWCAP2_SVEBITPERM (1 << 4)
+#define HWCAP2_SVESHA3 (1 << 5)
+#define HWCAP2_SVESM4 (1 << 6)
+#define HWCAP2_FLAGM2 (1 << 7)
+#define HWCAP2_FRINT (1 << 8)
+#define HWCAP2_SVEI8MM (1 << 9)
+#define HWCAP2_SVEF32MM (1 << 10)
+#define HWCAP2_SVEF64MM (1 << 11)
+#define HWCAP2_SVEBF16 (1 << 12)
+#define HWCAP2_I8MM (1 << 13)
+#define HWCAP2_BF16 (1 << 14)
+#define HWCAP2_DGH (1 << 15)
+#define HWCAP2_RNG (1 << 16)
+#define HWCAP2_BTI (1 << 17)
+#define HWCAP2_MTE (1 << 18)
+#define HWCAP2_ECV (1 << 19)
+#define HWCAP2_AFP (1 << 20)
+#define HWCAP2_RPRES (1 << 21)
+#define HWCAP2_MTE3 (1 << 22)
+#define HWCAP2_SME (1 << 23)
+#define HWCAP2_SME_I16I64 (1 << 24)
+#define HWCAP2_SME_F64F64 (1 << 25)
+#define HWCAP2_SME_I8I32 (1 << 26)
+#define HWCAP2_SME_F16F32 (1 << 27)
+#define HWCAP2_SME_B16F32 (1 << 28)
+#define HWCAP2_SME_F32F32 (1 << 29)
+#define HWCAP2_SME_FA64 (1 << 30)
+#define HWCAP2_WFXT (1UL << 31)
+#define HWCAP2_EBF16 (1UL << 32)
+#define HWCAP2_SVE_EBF16 (1UL << 33)
+#define HWCAP2_CSSC (1UL << 34)
+#define HWCAP2_RPRFM (1UL << 35)
+#define HWCAP2_SVE2P1 (1UL << 36)
+#define HWCAP2_SME2 (1UL << 37)
+#define HWCAP2_SME2P1 (1UL << 38)
+#define HWCAP2_SME_I16I32 (1UL << 39)
+#define HWCAP2_SME_BI32I32 (1UL << 40)
+#define HWCAP2_SME_B16B16 (1UL << 41)
+#define HWCAP2_SME_F16F16 (1UL << 42)
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/aarch64/crt1.S b/libc/sysdeps/linux/aarch64/crt1.S
index 09d0327ac..965d3265d 100644
--- a/libc/sysdeps/linux/aarch64/crt1.S
+++ b/libc/sysdeps/linux/aarch64/crt1.S
@@ -48,6 +48,20 @@ _start:
mov x29, #0
mov x30, #0
+#ifdef L_rcrt1
+ /* Save off the atexit pointer */
+ mov x19, x0
+
+ /* "Calculate" load address. The link address of __ehdr_start is 0. */
+ adrp x0, __ehdr_start
+
+ /* Do relocations */
+ bl reloc_static_pie
+
+ /* restore atexit pointer */
+ mov x0, x19
+#endif
+
/* Setup _fini in argument register */
mov x5, x0
diff --git a/libc/sysdeps/linux/aarch64/fpu_control.h b/libc/sysdeps/linux/aarch64/fpu_control.h
new file mode 100644
index 000000000..c3e7f6629
--- /dev/null
+++ b/libc/sysdeps/linux/aarch64/fpu_control.h
@@ -0,0 +1,102 @@
+/* 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 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 _AARCH64_FPU_CONTROL_H
+#define _AARCH64_FPU_CONTROL_H
+
+#include <features.h>
+
+/* Macros for accessing the FPCR and FPSR. */
+
+#if __GNUC_PREREQ (6,0)
+# define _FPU_GETCW(fpcr) (fpcr = __builtin_aarch64_get_fpcr ())
+# define _FPU_SETCW(fpcr) __builtin_aarch64_set_fpcr (fpcr)
+# define _FPU_GETFPSR(fpsr) (fpsr = __builtin_aarch64_get_fpsr ())
+# define _FPU_SETFPSR(fpsr) __builtin_aarch64_set_fpsr (fpsr)
+#else
+# define _FPU_GETCW(fpcr) \
+ ({ \
+ __uint64_t __fpcr; \
+ __asm__ __volatile__ ("mrs %0, fpcr" : "=r" (__fpcr)); \
+ fpcr = __fpcr; \
+ })
+
+# define _FPU_SETCW(fpcr) \
+ ({ \
+ __uint64_t __fpcr = fpcr; \
+ __asm__ __volatile__ ("msr fpcr, %0" : : "r" (__fpcr)); \
+ })
+
+# define _FPU_GETFPSR(fpsr) \
+ ({ \
+ __uint64_t __fpsr; \
+ __asm__ __volatile__ ("mrs %0, fpsr" : "=r" (__fpsr)); \
+ fpsr = __fpsr; \
+ })
+
+# define _FPU_SETFPSR(fpsr) \
+ ({ \
+ __uint64_t __fpsr = fpsr; \
+ __asm__ __volatile__ ("msr fpsr, %0" : : "r" (__fpsr)); \
+ })
+#endif
+
+/* Reserved bits should be preserved when modifying register
+ contents. These two masks indicate which bits in each of FPCR and
+ FPSR should not be changed. */
+
+#define _FPU_RESERVED 0xfe0fe0f8
+#define _FPU_FPSR_RESERVED 0x0fffffe0
+
+#define _FPU_DEFAULT 0x00000000
+#define _FPU_FPSR_DEFAULT 0x00000000
+
+/* Layout of FPCR and FPSR:
+
+ | | | | | | | |
+ 0 0 0 0 1 1 1 0 0 0 0 0 1 0 0 0 1 1 1 0 0 0 0 0 1 1 1 0 0 0 0 0
+ s s s s s s s s s s s
+ c c c c c c c c c c c c
+ N Z C V Q A D F R R S S S L L L I U U I U O D I I U U I U O D I
+ C H N Z M M T T B E E E D N N X F F Z O D N N X F F Z O
+ P O O R R Z N N N E K K E E E E E C K K C C C C C
+ D D I I P
+ E E D D
+ E E
+ */
+
+#define _FPU_FPCR_RM_MASK 0xc00000
+
+#define _FPU_FPCR_MASK_IXE 0x1000
+#define _FPU_FPCR_MASK_UFE 0x0800
+#define _FPU_FPCR_MASK_OFE 0x0400
+#define _FPU_FPCR_MASK_DZE 0x0200
+#define _FPU_FPCR_MASK_IOE 0x0100
+
+#define _FPU_FPCR_IEEE \
+ (_FPU_DEFAULT | _FPU_FPCR_MASK_IXE \
+ | _FPU_FPCR_MASK_UFE | _FPU_FPCR_MASK_OFE \
+ | _FPU_FPCR_MASK_DZE | _FPU_FPCR_MASK_IOE)
+
+#define _FPU_FPSR_IEEE 0
+
+typedef unsigned int fpu_control_t;
+typedef unsigned int fpu_fpsr_t;
+
+/* Default control word set at startup. */
+extern fpu_control_t __fpu_control;
+
+#endif
diff --git a/libc/sysdeps/linux/aarch64/sys/ucontext.h b/libc/sysdeps/linux/aarch64/sys/ucontext.h
index 5f75cbbf3..1a27f918b 100644
--- a/libc/sysdeps/linux/aarch64/sys/ucontext.h
+++ b/libc/sysdeps/linux/aarch64/sys/ucontext.h
@@ -45,10 +45,10 @@ typedef elf_fpregset_t fpregset_t;
typedef struct sigcontext mcontext_t;
/* Userlevel context. */
-typedef struct ucontext_t
+typedef struct ucontext
{
unsigned long uc_flags;
- struct ucontext_t *uc_link;
+ struct ucontext *uc_link;
stack_t uc_stack;
__sigset_t uc_sigmask;
unsigned char __reserved[128];
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-04 08:18:33 +0000