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syscalls.c
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syscalls.c
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#include <sys/syscall.h>
#include <stdint.h>
enum sc_type {
TRACE_DESC = 1 << 0,
TRACE_FILE = 1 << 1,
TRACE_IPC = 1 << 2,
TRACE_NETWORK = 1 << 3,
TRACE_PROCESS = 1 << 4,
TRACE_SIGNAL = 1 << 5,
TRACE_MEMORY = 1 << 6,
SYSCALL_NEVER_FAILS = 1 << 7,
};
#define TD TRACE_DESC
#define TF TRACE_FILE
#define TI TRACE_IPC
#define TN TRACE_NETWORK
#define TP TRACE_PROCESS
#define TS TRACE_SIGNAL
#define TM TRACE_MEMORY
#define NF SYSCALL_NEVER_FAILS
#define MAX_ARGS 6
#define MA MAX_ARGS
#if 0
/* gcc does not align this to 16bit */
typedef struct syscalldef {
const unsigned argcount:3;
const unsigned nameoffset:13;
} syscalldef __attribute__((aligned(2))) __attribute__((packed));
#else
typedef uint16_t syscalldef;
#endif
#if 0
#undef __x86_64__
#define __MIPS__
#define LINUX_MIPSN32
#endif
#if !defined(__MIPS__)
#define SYSCALL_START 0
#else
# if !defined(LINUX_MIPSN32) && !defined(LINUX_MIPSN64)
# define SYSCALL_START 4000
# elif defined(LINUX_MIPSN32)
# define SYSCALL_START 6000
# elif defined(LINUX_MIPSN64)
# define SYSCALL_START 5000
# else
# error "failed to detect mips ABI variant"
# endif
#endif
#define SYSCALL_OR_NUM(NR, SCNR) (NR - SYSCALL_START)
#define MAKE_UINT16(argcount, nameoff) ((nameoff & 0x1fff) | (argcount << 13))
#ifdef __x86_64__
#include "arch/x86_64/syscalldefs.h"
#elif defined(__i386__)
#include "arch/i386/syscalldefs.h"
#elif defined(__x32__)
#include "arch/x32/syscalldefs.h"
#elif defined(__ARM__)
#include "arch/arm/syscalldefs.h"
#elif defined(__powerpc__)
#include "arch/powerpc/syscalldefs.h"
#elif defined(__microblaze__)
#include "arch/microblaze/syscalldefs.h"
#elif defined(__MIPS__)
#include "arch/mips/syscalldefs.h"
#else
#error "failed to detect ARCH"
#endif
#include "../lib/include/macros.h"
static inline int invalid(unsigned sc) {
return((int) sc - SYSCALL_START < 0 || sc - SYSCALL_START > ARRAY_SIZE(syscalldefs));
}
unsigned syscall_get_argcount(unsigned sc) {
//return syscalldefs[sc].argcount;
return invalid(sc) ? 0 : syscalldefs[sc - SYSCALL_START] >> 13;
}
const char* syscall_get_name(unsigned sc) {
//return syscallnames + syscalldefs[sc].nameoffset;
return invalid(sc) ? "" : syscallnames + (syscalldefs[sc - SYSCALL_START] & 0x1fff);
}