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hurd: Add sys/ucontext.h and sigcontext.h for x86_64
This is based on the Linux port's version, but laid out to match Mach's struct i386_thread_state, much like the i386 version does. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
This commit is contained in:
Sergey Bugaev
Samuel Thibault
parent
f7f7dd8009
commit
57df0f16b4
131
sysdeps/mach/hurd/x86_64/bits/sigcontext.h
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131
sysdeps/mach/hurd/x86_64/bits/sigcontext.h
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/* Machine-dependent signal context structure for GNU Hurd. x86_64 version.
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Copyright (C) 1991-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _BITS_SIGCONTEXT_H
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#define _BITS_SIGCONTEXT_H 1
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#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
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# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
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#endif
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/* Signal handlers are actually called:
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void handler (int sig, int code, struct sigcontext *scp); */
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#include <bits/types/__sigset_t.h>
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#include <mach/machine/fp_reg.h>
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/* State of this thread when the signal was taken. */
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struct sigcontext
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{
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/* These first members are machine-independent. */
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int sc_onstack; /* Nonzero if running on sigstack. */
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__sigset_t sc_mask; /* Blocked signals to restore. */
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/* MiG reply port this thread is using. */
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unsigned int sc_reply_port;
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/* Port this thread is doing an interruptible RPC on. */
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unsigned int sc_intr_port;
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/* Error code associated with this signal (interpreted as `error_t'). */
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int sc_error;
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/* All following members are machine-dependent. The rest of this
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structure is written to be laid out identically to:
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{
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struct i386_thread_state basic;
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struct i386_float_state fpu;
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}
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trampoline.c knows this, so it must be changed if this changes. */
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#define sc_i386_thread_state sc_gs /* Beginning of correspondence. */
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/* Segment registers. */
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int sc_gs;
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int sc_fs;
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int sc_es;
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int sc_ds;
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long sc_r8;
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long sc_r9;
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long sc_r10;
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long sc_r11;
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long sc_r12;
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long sc_r13;
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long sc_r14;
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long sc_r15;
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long sc_rdi;
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long sc_rsi;
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long sc_rbp;
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long sc_rsp; /* Not used; sc_ursp is used instead. */
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long sc_rbx;
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long sc_rdx;
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long sc_rcx;
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long sc_rax;
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long sc_rip; /* Instruction pointer. */
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int sc_cs; /* Code segment register. */
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long sc_rfl; /* Processor flags. */
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long sc_ursp; /* This stack pointer is used. */
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int sc_ss; /* Stack segment register. */
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/* Following mimics struct i386_float_state. Structures and symbolic
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values can be found in <mach/i386/fp_reg.h>. */
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#define sc_i386_float_state sc_fpkind
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int sc_fpkind; /* FP_NO, FP_387, etc. */
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int sc_fpused; /* If zero, ignore rest of float state. */
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struct i386_fp_save sc_fpsave;
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struct i386_fp_regs sc_fpregs;
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int sc_fpexcsr; /* FPSR including exception bits. */
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};
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/* Traditional BSD names for some members. */
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#define sc_sp sc_ursp /* Stack pointer. */
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#define sc_fp sc_rbp /* Frame pointer. */
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#define sc_pc sc_rip /* Process counter. */
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#define sc_ps sc_rfl
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/* The deprecated sigcode values below are passed as an extra, non-portable
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argument to regular signal handlers. You should use SA_SIGINFO handlers
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instead, which use the standard POSIX signal codes. */
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/* Codes for SIGFPE. */
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#define FPE_INTOVF_TRAP 0x1 /* integer overflow */
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#define FPE_INTDIV_FAULT 0x2 /* integer divide by zero */
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#define FPE_FLTOVF_FAULT 0x3 /* floating overflow */
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#define FPE_FLTDIV_FAULT 0x4 /* floating divide by zero */
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#define FPE_FLTUND_FAULT 0x5 /* floating underflow */
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#define FPE_SUBRNG_FAULT 0x7 /* BOUNDS instruction failed */
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#define FPE_FLTDNR_FAULT 0x8 /* denormalized operand */
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#define FPE_FLTINX_FAULT 0x9 /* floating loss of precision */
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#define FPE_EMERR_FAULT 0xa /* mysterious emulation error 33 */
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#define FPE_EMBND_FAULT 0xb /* emulation BOUNDS instruction failed */
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/* Codes for SIGILL. */
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#define ILL_INVOPR_FAULT 0x1 /* invalid operation */
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#define ILL_STACK_FAULT 0x2 /* fault on microkernel stack access */
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#define ILL_FPEOPR_FAULT 0x3 /* invalid floating operation */
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/* Codes for SIGTRAP. */
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#define DBG_SINGLE_TRAP 0x1 /* single step */
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#define DBG_BRKPNT_FAULT 0x2 /* breakpoint instruction */
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#endif /* bits/sigcontext.h */
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38
sysdeps/mach/hurd/x86_64/ucontext_i.sym
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38
sysdeps/mach/hurd/x86_64/ucontext_i.sym
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#include <stddef.h>
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#include <signal.h>
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#include <sys/ucontext.h>
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--
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SIG_BLOCK
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SIG_SETMASK
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_NSIG8 (_NSIG / 8)
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#define ucontext(member) offsetof (ucontext_t, member)
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#define mcontext(member) ucontext (uc_mcontext.member)
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#define mreg(reg) mcontext (gregs[REG_##reg])
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oRBP mreg (RBP)
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oRSP mreg (RSP)
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oRBX mreg (RBX)
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oR8 mreg (R8)
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oR9 mreg (R9)
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oR10 mreg (R10)
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oR11 mreg (R11)
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oR12 mreg (R12)
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oR13 mreg (R13)
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oR14 mreg (R14)
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oR15 mreg (R15)
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oRDI mreg (RDI)
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oRSI mreg (RSI)
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oRDX mreg (RDX)
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oRAX mreg (RAX)
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oRCX mreg (RCX)
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oRIP mreg (RIP)
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oRFL mreg (RFL)
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oFPREGS mcontext (fpregs)
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oSIGMASK ucontext (uc_sigmask)
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oFPREGSMEM ucontext (__fpregs_mem)
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oMXCSR ucontext (__fpregs_mem.mxcsr)
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oSSP ucontext (__ssp)
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157
sysdeps/x86_64/sys/ucontext.h
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157
sysdeps/x86_64/sys/ucontext.h
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/* Copyright (C) 2001-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_UCONTEXT_H
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#define _SYS_UCONTEXT_H 1
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#include <features.h>
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#include <bits/types.h>
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#include <bits/types/sigset_t.h>
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#include <bits/types/stack_t.h>
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#ifdef __USE_MISC
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# define __ctx(fld) fld
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#else
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# define __ctx(fld) __ ## fld
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#endif
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/* Type for general register. */
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__extension__ typedef long long int greg_t;
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/* Number of general registers. */
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#define __NGREG 23
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#ifdef __USE_MISC
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# define NGREG __NGREG
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#endif
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/* Container for all general registers. */
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typedef greg_t gregset_t[__NGREG];
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#ifdef __USE_GNU
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/* Number of each register in the `gregset_t' array. */
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enum
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{
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REG_GSFS = 0, /* Actually int gs, fs. */
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# define REG_GSFS REG_GSFS
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REG_ESDS, /* Actually int es, ds. */
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# define REG_ESDS REG_ESDS
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REG_R8,
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# define REG_R8 REG_R8
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REG_R9,
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# define REG_R9 REG_R9
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REG_R10,
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# define REG_R10 REG_R10
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REG_R11,
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# define REG_R11 REG_R11
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REG_R12,
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# define REG_R12 REG_R12
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REG_R13,
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# define REG_R13 REG_R13
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REG_R14,
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# define REG_R14 REG_R14
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REG_R15,
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# define REG_R15 REG_R15
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REG_RDI,
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# define REG_RDI REG_RDI
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REG_RSI,
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# define REG_RSI REG_RSI
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REG_RBP,
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# define REG_RBP REG_RBP
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REG_RSP,
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# define REG_RSP REG_RSP
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REG_RBX,
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# define REG_RBX REG_RBX
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REG_RDX,
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# define REG_RDX REG_RDX
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REG_RCX,
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# define REG_RCX REG_RCX
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REG_RAX,
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# define REG_RAX REG_RAX
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REG_RIP,
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# define REG_RIP REG_RIP
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REG_CS, /* Actually int cs, pad. */
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# define REG_CS REG_CS
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REG_RFL,
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# define REG_RFL REG_RFL
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REG_ERR,
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# define REG_ERR REG_ERR
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REG_TRAPNO,
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# define REG_TRAPNO REG_TRAPNO
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REG_OLDMASK,
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# define REG_OLDMASK REG_OLDMASK
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REG_CR2
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# define REG_CR2 REG_CR2
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};
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#endif
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struct _libc_fpxreg
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{
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unsigned short int __ctx(significand)[4];
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unsigned short int __ctx(exponent);
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unsigned short int __glibc_reserved1[3];
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};
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struct _libc_xmmreg
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{
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__uint32_t __ctx(element)[4];
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};
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struct _libc_fpstate
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{
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/* 64-bit FXSAVE format. */
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__uint16_t __ctx(cwd);
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__uint16_t __ctx(swd);
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__uint16_t __ctx(ftw);
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__uint16_t __ctx(fop);
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__uint64_t __ctx(rip);
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__uint64_t __ctx(rdp);
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__uint32_t __ctx(mxcsr);
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__uint32_t __ctx(mxcr_mask);
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struct _libc_fpxreg _st[8];
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struct _libc_xmmreg _xmm[16];
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__uint32_t __glibc_reserved1[24];
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};
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/* Structure to describe FPU registers. */
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typedef struct _libc_fpstate *fpregset_t;
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/* Context to describe whole processor state. */
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typedef struct
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{
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gregset_t __ctx(gregs);
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/* Note that fpregs is a pointer. */
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fpregset_t __ctx(fpregs);
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__extension__ unsigned long long __reserved1 [8];
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} mcontext_t;
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/* Userlevel context. */
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typedef struct ucontext_t
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{
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unsigned long int __ctx(uc_flags);
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struct ucontext_t *uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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sigset_t uc_sigmask;
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struct _libc_fpstate __fpregs_mem;
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__extension__ unsigned long long int __ssp[4];
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} ucontext_t;
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#undef __ctx
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#endif /* sys/ucontext.h */
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