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/* Copyright (C) 1998-2017 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
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
#include <features.h>
#include <signal.h>
#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;
/*
* 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).
*/
#define REG_ASI (19)
#define REG_FPRS (20)
#define NGREG 21
typedef long greg_t;
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
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;
#endif /* sys/ucontext.h */
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