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Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/bits')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/bits/ucontext.h | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/ucontext.h b/sysdeps/unix/sysv/linux/sparc/bits/ucontext.h new file mode 100644 index 0000000000..4760a6a685 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/bits/ucontext.h @@ -0,0 +1,304 @@ +/* Copyright (C) 1998-2020 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _BITS_UCONTEXT_H +#define _BITS_UCONTEXT_H 1 + +#include <features.h> + +#include <bits/types/sigset_t.h> +#include <bits/types/stack_t.h> + +#include <bits/wordsize.h> + + +#ifdef __USE_MISC +# define __ctx(fld) fld +#else +# define __ctx(fld) __ ## fld +#endif + +#if __WORDSIZE == 64 + +#define __MC_NGREG 19 +#ifdef __USE_MISC +# 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 __MC_NGREG +#endif + +typedef unsigned long mc_greg_t; +typedef mc_greg_t mc_gregset_t[__MC_NGREG]; + +#ifdef __USE_MISC +# define MC_MAXFPQ 16 +#endif +struct __mc_fq { + unsigned long *__ctx(mcfq_addr); + unsigned int __ctx(mcfq_insn); +}; + +typedef struct { + union { + unsigned int __ctx(sregs)[32]; + unsigned long __ctx(dregs)[32]; + long double __ctx(qregs)[16]; + } __ctx(mcfpu_fregs); + unsigned long __ctx(mcfpu_fsr); + unsigned long __ctx(mcfpu_fprs); + unsigned long __ctx(mcfpu_gsr); + struct __mc_fq *__ctx(mcfpu_fq); + unsigned char __ctx(mcfpu_qcnt); + unsigned char __ctx(mcfpu_qentsz); + unsigned char __ctx(mcfpu_enab); +} mc_fpu_t; + +typedef struct { + mc_gregset_t __ctx(mc_gregs); + mc_greg_t __ctx(mc_fp); + mc_greg_t __ctx(mc_i7); + mc_fpu_t __ctx(mc_fpregs); +} mcontext_t; + +typedef struct ucontext_t { + struct ucontext_t *uc_link; + unsigned long __ctx(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]. + */ +#ifdef __USE_MISC +# 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) +#endif + +/* + * 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 __NGREG 21 +# ifdef __USE_MISC +# define REG_ASI (19) +# define REG_FPRS (20) + +# define NGREG __NGREG +# endif +typedef long greg_t; + +#else /* __WORDSIZE == 32 */ + +# define __NGREG 19 +# ifdef __USE_MISC +# define NGREG __NGREG +# endif +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. */ +#ifdef __USE_MISC +# define SPARC_MAXREGWINDOW __SPARC_MAXREGWINDOW +#endif +struct __rwindow + { + greg_t __ctx(rw_local)[8]; /* locals */ + greg_t __ctx(rw_in)[8]; /* ins */ + }; + +#ifdef __USE_MISC +# define rw_fp __ctx(rw_in)[6] /* frame pointer */ +# define rw_rtn __ctx(rw_in)[7] /* return address */ +#endif + +typedef struct + { + int __ctx(wbcnt); + int *__ctx(spbuf)[__SPARC_MAXREGWINDOW]; + struct __rwindow __ctx(wbuf)[__SPARC_MAXREGWINDOW]; + } gwindows_t; + +/* + * Floating point definitions. + */ + +#ifdef __USE_MISC +# define MAXFPQ 16 /* max # of fpu queue entries currently supported */ +#endif + +/* + * 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 *__ctx(fpq_addr); /* address */ + unsigned long __ctx(fpq_instr); /* instruction */ + }; + +struct __fq + { + union /* FPU inst/addr queue */ + { + double __ctx(whole); + struct __fpq __ctx(fpq); + } __ctx(FQu); + }; + +#ifdef __USE_MISC +# 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 +#endif + +#if __WORDSIZE == 64 + +typedef struct + { + union { /* FPU floating point regs */ + unsigned __ctx(fpu_regs)[32]; /* 32 singles */ + double __ctx(fpu_dregs)[32]; /* 32 doubles */ + long double __ctx(fpu_qregs)[16]; /* 16 quads */ + } __ctx(fpu_fr); + struct __fq *__ctx(fpu_q); /* ptr to array of FQ entries */ + unsigned long __ctx(fpu_fsr); /* FPU status register */ + unsigned char __ctx(fpu_qcnt); /* # of entries in saved FQ */ + unsigned char __ctx(fpu_q_entrysize); /* # of bytes per FQ entry */ + unsigned char __ctx(fpu_en); /* flag signifying fpu in use */ + } fpregset_t; + +#else /* __WORDSIZE == 32 */ + +typedef struct + { + union { /* FPU floating point regs */ + __extension__ unsigned long long __ctx(fpu_regs)[32]; /* 32 singles */ + double __ctx(fpu_dregs)[16]; /* 16 doubles */ + } __ctx(fpu_fr); + struct __fq *__ctx(fpu_q); /* ptr to array of FQ entries */ + unsigned __ctx(fpu_fsr); /* FPU status register */ + unsigned char __ctx(fpu_qcnt); /* # of entries in saved FQ */ + unsigned char __ctx(fpu_q_entrysize); /* # of bytes per FQ entry */ + unsigned char __ctx(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 __ctx(xrs_id); /* indicates xrs_ptr validity */ + void * __ctx(xrs_ptr); /* ptr to extra reg state */ + } xrs_t; + +#ifdef __USE_MISC +# define XRS_ID 0x78727300 /* the string "xrs" */ +#endif + +typedef struct + { + gregset_t __ctx(gregs); /* general register set */ + gwindows_t *__ctx(gwins); /* POSSIBLE pointer to register + windows */ + fpregset_t __ctx(fpregs); /* floating point register set */ + xrs_t __ctx(xrs); /* POSSIBLE extra register state + association */ + long __glibc_reserved1[19]; + } mcontext_t; + + +/* Userlevel context. */ +typedef struct ucontext_t + { + unsigned long __ctx(uc_flags); + struct ucontext_t *uc_link; + sigset_t uc_sigmask; + stack_t uc_stack; + mcontext_t uc_mcontext; + } ucontext_t; + +#endif /* __WORDSIZE == 32 */ +#endif /* bits/ucontext.h */ |