diff options
Diffstat (limited to 'libc/sysdeps/linux/aarch64')
| -rw-r--r-- | libc/sysdeps/linux/aarch64/bits/fcntl.h | 24 | ||||
| -rw-r--r-- | libc/sysdeps/linux/aarch64/bits/fenv.h | 78 | ||||
| -rw-r--r-- | libc/sysdeps/linux/aarch64/bits/hwcap.h | 99 | ||||
| -rw-r--r-- | libc/sysdeps/linux/aarch64/crt1.S | 4 | ||||
| -rw-r--r-- | libc/sysdeps/linux/aarch64/fpu_control.h | 102 | ||||
| -rw-r--r-- | libc/sysdeps/linux/aarch64/sys/ucontext.h | 4 |
6 files changed, 286 insertions, 25 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/crt1.S b/libc/sysdeps/linux/aarch64/crt1.S index e9f946894..965d3265d 100644 --- a/libc/sysdeps/linux/aarch64/crt1.S +++ b/libc/sysdeps/linux/aarch64/crt1.S @@ -52,8 +52,8 @@ _start: /* Save off the atexit pointer */ mov x19, x0 - /* Calculate load address... idk how this works, but it does */ - adrp x0, _start + /* "Calculate" load address. The link address of __ehdr_start is 0. */ + adrp x0, __ehdr_start /* Do relocations */ bl reloc_static_pie 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]; |