mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 19:00:09 +00:00
270 lines
7.2 KiB
C
270 lines
7.2 KiB
C
/* Copyright (C) 1998-2016 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_UCONTEXT_H
|
|
#define _SYS_UCONTEXT_H 1
|
|
|
|
#include <features.h>
|
|
#include <signal.h>
|
|
#include <bits/wordsize.h>
|
|
|
|
#if __WORDSIZE == 64
|
|
|
|
#define MC_TSTATE 0
|
|
#define MC_PC 1
|
|
#define MC_NPC 2
|
|
#define MC_Y 3
|
|
#define MC_G1 4
|
|
#define MC_G2 5
|
|
#define MC_G3 6
|
|
#define MC_G4 7
|
|
#define MC_G5 8
|
|
#define MC_G6 9
|
|
#define MC_G7 10
|
|
#define MC_O0 11
|
|
#define MC_O1 12
|
|
#define MC_O2 13
|
|
#define MC_O3 14
|
|
#define MC_O4 15
|
|
#define MC_O5 16
|
|
#define MC_O6 17
|
|
#define MC_O7 18
|
|
#define MC_NGREG 19
|
|
|
|
typedef unsigned long mc_greg_t;
|
|
typedef mc_greg_t mc_gregset_t[MC_NGREG];
|
|
|
|
#define MC_MAXFPQ 16
|
|
struct mc_fq {
|
|
unsigned long *mcfq_addr;
|
|
unsigned int mcfq_insn;
|
|
};
|
|
|
|
struct mc_fpu {
|
|
union {
|
|
unsigned int sregs[32];
|
|
unsigned long dregs[32];
|
|
long double qregs[16];
|
|
} mcfpu_fregs;
|
|
unsigned long mcfpu_fsr;
|
|
unsigned long mcfpu_fprs;
|
|
unsigned long mcfpu_gsr;
|
|
struct mc_fq *mcfpu_fq;
|
|
unsigned char mcfpu_qcnt;
|
|
unsigned char mcfpu_qentsz;
|
|
unsigned char mcfpu_enab;
|
|
};
|
|
typedef struct mc_fpu mc_fpu_t;
|
|
|
|
typedef struct {
|
|
mc_gregset_t mc_gregs;
|
|
mc_greg_t mc_fp;
|
|
mc_greg_t mc_i7;
|
|
mc_fpu_t mc_fpregs;
|
|
} mcontext_t;
|
|
|
|
typedef struct ucontext {
|
|
struct ucontext *uc_link;
|
|
unsigned long uc_flags;
|
|
unsigned long __uc_sigmask;
|
|
mcontext_t uc_mcontext;
|
|
stack_t uc_stack;
|
|
__sigset_t uc_sigmask;
|
|
} ucontext_t;
|
|
|
|
#endif /* __WORDISIZE == 64 */
|
|
|
|
/*
|
|
* Location of the users' stored registers relative to R0.
|
|
* Usage is as an index into a gregset_t array or as u.u_ar0[XX].
|
|
*/
|
|
#define REG_PSR (0)
|
|
#define REG_PC (1)
|
|
#define REG_nPC (2)
|
|
#define REG_Y (3)
|
|
#define REG_G1 (4)
|
|
#define REG_G2 (5)
|
|
#define REG_G3 (6)
|
|
#define REG_G4 (7)
|
|
#define REG_G5 (8)
|
|
#define REG_G6 (9)
|
|
#define REG_G7 (10)
|
|
#define REG_O0 (11)
|
|
#define REG_O1 (12)
|
|
#define REG_O2 (13)
|
|
#define REG_O3 (14)
|
|
#define REG_O4 (15)
|
|
#define REG_O5 (16)
|
|
#define REG_O6 (17)
|
|
#define REG_O7 (18)
|
|
|
|
/*
|
|
* A gregset_t is defined as an array type for compatibility with the reference
|
|
* source. This is important due to differences in the way the C language
|
|
* treats arrays and structures as parameters.
|
|
*
|
|
* Note that NGREG is really (sizeof (struct regs) / sizeof (greg_t)),
|
|
* but that the ABI defines it absolutely to be 21 (resp. 19).
|
|
*/
|
|
|
|
#if __WORDSIZE == 64
|
|
|
|
#define REG_ASI (19)
|
|
#define REG_FPRS (20)
|
|
|
|
#define NGREG 21
|
|
typedef long greg_t;
|
|
|
|
#else /* __WORDSIZE == 32 */
|
|
|
|
#define NGREG 19
|
|
typedef int greg_t;
|
|
|
|
#endif /* __WORDSIZE == 32 */
|
|
|
|
typedef greg_t gregset_t[NGREG];
|
|
|
|
/*
|
|
* The following structures define how a register window can appear on the
|
|
* stack. This structure is available (when required) through the `gwins'
|
|
* field of an mcontext (nested within ucontext). SPARC_MAXWINDOW is the
|
|
* maximum number of outstanding regiters window defined in the SPARC
|
|
* architecture (*not* implementation).
|
|
*/
|
|
#define SPARC_MAXREGWINDOW 31 /* max windows in SPARC arch. */
|
|
struct rwindow
|
|
{
|
|
greg_t rw_local[8]; /* locals */
|
|
greg_t rw_in[8]; /* ins */
|
|
};
|
|
|
|
#define rw_fp rw_in[6] /* frame pointer */
|
|
#define rw_rtn rw_in[7] /* return address */
|
|
|
|
typedef struct gwindows
|
|
{
|
|
int wbcnt;
|
|
int *spbuf[SPARC_MAXREGWINDOW];
|
|
struct rwindow wbuf[SPARC_MAXREGWINDOW];
|
|
} gwindows_t;
|
|
|
|
/*
|
|
* Floating point definitions.
|
|
*/
|
|
|
|
#define MAXFPQ 16 /* max # of fpu queue entries currently supported */
|
|
|
|
/*
|
|
* struct fq defines the minimal format of a floating point instruction queue
|
|
* entry. The size of entries in the floating point queue are implementation
|
|
* dependent. The union FQu is guarenteed to be the first field in any ABI
|
|
* conformant system implementation. Any additional fields provided by an
|
|
* implementation should not be used applications designed to be ABI conformant. */
|
|
|
|
struct fpq
|
|
{
|
|
unsigned long *fpq_addr; /* address */
|
|
unsigned long fpq_instr; /* instruction */
|
|
};
|
|
|
|
struct fq
|
|
{
|
|
union /* FPU inst/addr queue */
|
|
{
|
|
double whole;
|
|
struct fpq fpq;
|
|
} FQu;
|
|
};
|
|
|
|
#define FPU_REGS_TYPE unsigned
|
|
#define FPU_DREGS_TYPE unsigned long long
|
|
#define V7_FPU_FSR_TYPE unsigned
|
|
#define V9_FPU_FSR_TYPE unsigned long long
|
|
#define V9_FPU_FPRS_TYPE unsigned
|
|
|
|
#if __WORDSIZE == 64
|
|
|
|
typedef struct fpu
|
|
{
|
|
union { /* FPU floating point regs */
|
|
unsigned fpu_regs[32]; /* 32 singles */
|
|
double fpu_dregs[32]; /* 32 doubles */
|
|
long double fpu_qregs[16]; /* 16 quads */
|
|
} fpu_fr;
|
|
struct fq *fpu_q; /* ptr to array of FQ entries */
|
|
unsigned long fpu_fsr; /* FPU status register */
|
|
unsigned char fpu_qcnt; /* # of entries in saved FQ */
|
|
unsigned char fpu_q_entrysize; /* # of bytes per FQ entry */
|
|
unsigned char fpu_en; /* flag signifying fpu in use */
|
|
} fpregset_t;
|
|
|
|
#else /* __WORDSIZE == 32 */
|
|
|
|
typedef struct fpu
|
|
{
|
|
union { /* FPU floating point regs */
|
|
__extension__ unsigned long long fpu_regs[32]; /* 32 singles */
|
|
double fpu_dregs[16]; /* 16 doubles */
|
|
} fpu_fr;
|
|
struct fq *fpu_q; /* ptr to array of FQ entries */
|
|
unsigned fpu_fsr; /* FPU status register */
|
|
unsigned char fpu_qcnt; /* # of entries in saved FQ */
|
|
unsigned char fpu_q_entrysize; /* # of bytes per FQ entry */
|
|
unsigned char fpu_en; /* flag signifying fpu in use */
|
|
} fpregset_t;
|
|
|
|
/*
|
|
* The following structure is for associating extra register state with
|
|
* the ucontext structure and is kept within the uc_mcontext filler area.
|
|
*
|
|
* If (xrs_id == XRS_ID) then the xrs_ptr field is a valid pointer to
|
|
* extra register state. The exact format of the extra register state
|
|
* pointed to by xrs_ptr is platform-dependent.
|
|
*
|
|
* Note: a platform may or may not manage extra register state.
|
|
*/
|
|
typedef struct
|
|
{
|
|
unsigned int xrs_id; /* indicates xrs_ptr validity */
|
|
void * xrs_ptr; /* ptr to extra reg state */
|
|
} xrs_t;
|
|
|
|
#define XRS_ID 0x78727300 /* the string "xrs" */
|
|
|
|
typedef struct
|
|
{
|
|
gregset_t gregs; /* general register set */
|
|
gwindows_t *gwins; /* POSSIBLE pointer to register windows */
|
|
fpregset_t fpregs; /* floating point register set */
|
|
xrs_t xrs; /* POSSIBLE extra register state association */
|
|
long filler[19];
|
|
} mcontext_t;
|
|
|
|
|
|
/* Userlevel context. */
|
|
typedef struct ucontext
|
|
{
|
|
unsigned long uc_flags;
|
|
struct ucontext *uc_link;
|
|
__sigset_t uc_sigmask;
|
|
stack_t uc_stack;
|
|
mcontext_t uc_mcontext;
|
|
} ucontext_t;
|
|
|
|
#endif /* __WORDSIZE == 32 */
|
|
#endif /* sys/ucontext.h */
|