82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/* syscallVxSim.h - VxSim specific System Call Infrastructure header */
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/*
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* Copyright (c) 2003-2004,2007,2010 Wind River Systems, Inc.
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*
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* The right to copy, distribute, modify or otherwise make use
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* of this software may be licensed only pursuant to the terms
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* of an applicable Wind River license agreement.
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*/
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/*
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modification history
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--------------------
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01f,02jun10,elp 64 bits support.
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01e,04may07,zl updated portable library build configuration.
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01d,10feb04,jeg added _func_syscallTrapHandle to fixe dependency issue
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introduced into wdbDbgSysCallCheck() API.
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01c,09feb04,jeg added syscallTrapHandle () prototype.
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01b,12dec03,jeg added frame pointer and program counter in
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SYSCALL_ENTRY_STATE structure
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01a,05nov03,jmp written.
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*/
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/*
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DESCRIPTION
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This header contains VxSim-specific definitions and constants used by
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the System Call Infrastructure library.
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*/
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#ifndef __INCsyscallVxSimh
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#define __INCsyscallVxSimh
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* defines */
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#ifdef _WRS_CONFIG_LP64
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#define SYSCALL_ENTRY_FRAME_SIZE 104
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#else
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#define SYSCALL_ENTRY_FRAME_SIZE 52
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#endif
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#define _SYSCALL_USER_SP_CHECK(sp) /* XXX To implement */
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/* typedefs */
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#ifndef _ASMLANGUAGE
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/*
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* The SYSCALL_ENTRY_STATE structure defines the saved machine state
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* when the system call trap is taken. This information is architecture
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* specific, and is used by the system call dispatcher to restart system
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* calls that have been interrupted by the occurance of signals.
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* System call restart is achieved by restoring the saved state at the
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* time of the system call trap, and re-issuing the system call.
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* Arguments to the system call are saved on the kernel stack, and
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* the address of that array is passed as an argument to the dispatcher.
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* The layout of this structure must exactly match the ordering of members
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* of the system call entry frame in src/arch/sim<arch>/syscallALib.s.
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*/
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typedef struct syscall_entry_state
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{
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long args[8]; /* argument list (user stack) */
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long scn; /* System Call Number (SCN) in eax */
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long * pUStack; /* user-mode stack pointer */
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long statusReg; /* saved Status Register */
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long * efp; /* saved frame Register */
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void * pc; /* Trap return address */
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} SYSCALL_ENTRY_STATE;
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extern void (*_func_syscallTrapHandle)(void);
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extern void syscallTrapHandle (void);
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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCsyscallVxSimh */
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