diff options
Diffstat (limited to 'libc/sysdeps/linux/mips/sys/ucontext.h')
| -rw-r--r-- | libc/sysdeps/linux/mips/sys/ucontext.h | 201 |
1 files changed, 80 insertions, 121 deletions
diff --git a/libc/sysdeps/linux/mips/sys/ucontext.h b/libc/sysdeps/linux/mips/sys/ucontext.h index 90aa09a80..ac496f3d6 100644 --- a/libc/sysdeps/linux/mips/sys/ucontext.h +++ b/libc/sysdeps/linux/mips/sys/ucontext.h @@ -1,5 +1,5 @@ -/* Copyright (C) 1998, 1999, 2002, 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. +/* Copyright (C) 1997, 1998, 2000, 2003, 2004, 2006 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 @@ -16,143 +16,102 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -/* System V/mips ABI compliant context switching support. */ - +/* Don't rely on this, the interface is currently messed up and may need to + be broken to be fixed. */ #ifndef _SYS_UCONTEXT_H #define _SYS_UCONTEXT_H 1 #include <features.h> +#include <sgidefs.h> #include <signal.h> -/* Type for general register. */ -#if _MIPS_SIM == _MIPS_SIM_ABI32 -typedef __uint32_t greg_t; -#else -typedef __uint64_t greg_t; -#endif +/* We need the signal context definitions even if they are not used + included in <signal.h>. */ +#include <bits/sigcontext.h> + +/* Type for general register. Even in o32 we assume 64-bit registers, + like the kernel. */ +__extension__ typedef unsigned long long int greg_t; /* Number of general registers. */ -#define NGREG 36 +#define NGREG 32 +#define NFPREG 32 /* Container for all general registers. */ typedef greg_t gregset_t[NGREG]; -/* Number of each register is the `gregset_t' array. */ -enum -{ - CTX_R0 = 0, -#define CTX_R0 CTX_R0 - CTX_AT = 1, -#define CTX_AT CTX_AT - CTX_V0 = 2, -#define CTX_V0 CTX_V0 - CTX_V1 = 3, -#define CTX_V1 CTX_V1 - CTX_A0 = 4, -#define CTX_A0 CTX_A0 - CTX_A1 = 5, -#define CTX_A1 CTX_A1 - CTX_A2 = 6, -#define CTX_A2 CTX_A2 - CTX_A3 = 7, -#define CTX_A3 CTX_A3 - CTX_T0 = 8, -#define CTX_T0 CTX_T0 - CTX_T1 = 9, -#define CTX_T1 CTX_T1 - CTX_T2 = 10, -#define CTX_T2 CTX_T2 - CTX_T3 = 11, -#define CTX_T3 CTX_T3 - CTX_T4 = 12, -#define CTX_T4 CTX_T4 - CTX_T5 = 13, -#define CTX_T5 CTX_T5 - CTX_T6 = 14, -#define CTX_T6 CTX_T6 - CTX_T7 = 15, -#define CTX_T7 CTX_T7 - CTX_S0 = 16, -#define CTX_S0 CTX_S0 - CTX_S1 = 17, -#define CTX_S1 CTX_S1 - CTX_S2 = 18, -#define CTX_S2 CTX_S2 - CTX_S3 = 19, -#define CTX_S3 CTX_S3 - CTX_S4 = 20, -#define CTX_S4 CTX_S4 - CTX_S5 = 21, -#define CTX_S5 CTX_S5 - CTX_S6 = 22, -#define CTX_S6 CTX_S6 - CTX_S7 = 23, -#define CTX_S7 CTX_S7 - CTX_T8 = 24, -#define CTX_T8 CTX_T8 - CTX_T9 = 25, -#define CTX_T9 CTX_T9 - CTX_K0 = 26, -#define CTX_K0 CTX_K0 - CTX_K1 = 27, -#define CTX_K1 CTX_K1 - CTX_GP = 28, -#define CTX_GP CTX_GP - CTX_SP = 29, -#define CTX_SP CTX_SP - CTX_S8 = 30, -#define CTX_S8 CTX_S8 - CTX_RA = 31, -#define CTX_RA CTX_RA - CTX_MDLO = 32, -#define CTX_MDLO CTX_MDLO - CTX_MDHI = 33, -#define CTX_MDHI CTX_MDHI - CTX_CAUSE = 34, -#define CTX_CAUSE CTX_CAUSE - CTX_EPC = 35, -#define CTX_EPC CTX_EPC -}; - -/* Structure to describe FPU registers. */ -typedef struct fpregset -{ - union - { -#if _MIPS_SIM == _MIPS_SIM_ABI32 - double fp_dregs[16]; - float fp_fregs[32]; - unsigned int fp_regs[32]; -#else - double fp_dregs[32]; - /* float fp_fregs[32]; */ - __uint64_t fp_regs[32]; -#endif - } fp_r; - unsigned int fp_csr; - unsigned int fp_pad; +/* Container for all FPU registers. */ +typedef struct fpregset { + union { + double fp_dregs[NFPREG]; + struct { + float _fp_fregs; + unsigned int _fp_pad; + } fp_fregs[NFPREG]; + } fp_r; } fpregset_t; + /* Context to describe whole processor state. */ +#if _MIPS_SIM == _ABIO32 +/* Earlier versions of glibc for mips had an entirely different + definition of mcontext_t, that didn't even resemble the + corresponding kernel data structure. Since all legitimate uses of + ucontext_t in glibc mustn't have accessed anything beyond + uc_mcontext and, even then, taking a pointer to it, casting it to + sigcontext_t, and accessing it as such, which is what it has always + been, this can still be rectified. Fortunately, makecontext, + [gs]etcontext et all have never been implemented. */ typedef struct -{ - gregset_t gpregs; - fpregset_t fpregs; -} mcontext_t; + { + unsigned int regmask; + unsigned int status; + greg_t pc; + gregset_t gregs; + fpregset_t fpregs; + unsigned int fp_owned; + unsigned int fpc_csr; + unsigned int fpc_eir; + unsigned int used_math; + unsigned int dsp; + greg_t mdhi; + greg_t mdlo; + unsigned long hi1; + unsigned long lo1; + unsigned long hi2; + unsigned long lo2; + unsigned long hi3; + unsigned long lo3; + } mcontext_t; +#else +typedef struct + { + gregset_t gregs; + fpregset_t fpregs; + greg_t mdhi; + greg_t hi1; + greg_t hi2; + greg_t hi3; + greg_t mdlo; + greg_t lo1; + greg_t lo2; + greg_t lo3; + greg_t pc; + unsigned int fpc_csr; + unsigned int used_math; + unsigned int dsp; + unsigned int reserved; + } mcontext_t; +#endif /* Userlevel context. */ typedef struct ucontext -{ -#if _MIPS_SIM == _MIPS_SIM_ABI32 - unsigned long int uc_flags; -#else - __uint64_t uc_flags; -#endif - struct ucontext *uc_link; - __sigset_t uc_sigmask; - stack_t uc_stack; - mcontext_t uc_mcontext; - int uc_filler[48]; -} ucontext_t; + { + unsigned long int uc_flags; + struct ucontext *uc_link; + stack_t uc_stack; + mcontext_t uc_mcontext; + __sigset_t uc_sigmask; + } ucontext_t; #endif /* sys/ucontext.h */ |