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dpavlin |
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/* |
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* Cisco 7200 (Predator) simulation platform. |
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* Copyright (c) 2005,2006 Christophe Fillot (cf@utc.fr) |
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*/ |
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#ifndef __UTILS_H__ |
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#define __UTILS_H__ |
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#include <stdarg.h> |
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#include <sys/types.h> |
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#include <sys/mman.h> |
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#include <sys/time.h> |
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#include <time.h> |
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#include <netinet/in.h> |
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/* True/False definitions */ |
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#ifndef FALSE |
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#define FALSE 0 |
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#endif |
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#ifndef TRUE |
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#define TRUE 1 |
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#endif |
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/* Endianness */ |
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#define ARCH_BIG_ENDIAN 0x4321 |
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#define ARCH_LITTLE_ENDIAN 0x1234 |
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#if defined(PPC) || defined(__powerpc__) || defined(__ppc__) |
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#define ARCH_BYTE_ORDER ARCH_BIG_ENDIAN |
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#elif defined(__sparc) || defined(__sparc__) |
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#define ARCH_BYTE_ORDER ARCH_BIG_ENDIAN |
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#elif defined(__alpha) || defined(__alpha__) |
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#define ARCH_BYTE_ORDER ARCH_LITTLE_ENDIAN |
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#elif defined(__i386) || defined(__i386__) || defined(i386) |
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#define ARCH_BYTE_ORDER ARCH_LITTLE_ENDIAN |
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#elif defined(__x86_64__) |
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#define ARCH_BYTE_ORDER ARCH_LITTLE_ENDIAN |
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#endif |
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#ifndef ARCH_BYTE_ORDER |
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#error Please define your architecture in utils.h! |
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#endif |
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/* Host to VM (big-endian) conversion functions */ |
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#if ARCH_BYTE_ORDER == ARCH_BIG_ENDIAN |
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#define htovm16(x) (x) |
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#define htovm32(x) (x) |
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#define htovm64(x) (x) |
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#define vmtoh16(x) (x) |
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#define vmtoh32(x) (x) |
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#define vmtoh64(x) (x) |
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#else |
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#define htovm16(x) (htons(x)) |
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#define htovm32(x) (htonl(x)) |
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#define htovm64(x) (swap64(x)) |
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#define vmtoh16(x) (ntohs(x)) |
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#define vmtoh32(x) (ntohl(x)) |
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#define vmtoh64(x) (swap64(x)) |
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#endif |
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/* Useful attributes for functions */ |
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#define asmlinkage __attribute__((regparm(0))) |
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#define fastcall __attribute__((regparm(3))) |
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#if __GNUC__ > 2 |
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#define forced_inline inline __attribute__((always_inline)) |
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#define no_inline __attribute__ ((noinline)) |
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#else |
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#define forced_inline inline |
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#define no_inline |
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#endif |
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#if __GNUC__ > 2 |
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/* http://kerneltrap.org/node/4705 */ |
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#define likely(x) __builtin_expect((x),1) |
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#define unlikely(x) __builtin_expect((x),0) |
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#else |
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#define likely(x) (x) |
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#define unlikely(x) (x) |
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#endif |
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/* Common types */ |
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typedef unsigned char m_uint8_t; |
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typedef signed char m_int8_t; |
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typedef unsigned short m_uint16_t; |
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typedef signed short m_int16_t; |
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typedef unsigned int m_uint32_t; |
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typedef signed int m_int32_t; |
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typedef unsigned long long m_uint64_t; |
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typedef signed long long m_int64_t; |
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typedef unsigned long m_iptr_t; |
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typedef m_uint64_t m_tmcnt_t; |
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/* Forward declarations */ |
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typedef struct vm_instance vm_instance_t; |
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typedef struct insn_block insn_block_t; |
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typedef struct insn_exec_page insn_exec_page_t; |
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/* MIPS instruction */ |
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typedef m_uint32_t mips_insn_t; |
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/* Max and min macro */ |
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#define m_max(a,b) (((a) > (b)) ? (a) : (b)) |
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#define m_min(a,b) (((a) < (b)) ? (a) : (b)) |
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/* A simple macro for adjusting pointers */ |
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#define PTR_ADJUST(type,ptr,size) (type)((char *)(ptr) + (size)) |
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/* Size of a field in a structure */ |
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#define SIZEOF(st,field) (sizeof(((st *)NULL)->field)) |
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/* Compute offset of a field in a structure */ |
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#define OFFSET(st,f) ((long)&((st *)(NULL))->f) |
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/* MMAP */ |
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#ifndef MAP_ANONYMOUS |
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#define MAP_ANONYMOUS MAP_ANON |
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#endif |
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/* List item */ |
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typedef struct m_list m_list_t; |
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struct m_list { |
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void *data; |
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m_list_t *next; |
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}; |
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/* MTS mapping info */ |
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typedef struct { |
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m_uint64_t vaddr; |
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m_uint64_t paddr; |
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m_uint64_t len; |
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m_uint32_t cached; |
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m_uint32_t tlb_index; |
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}mts_map_t; |
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/* Global logfile */ |
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extern FILE *log_file; |
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/* Check status of a bit */ |
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static inline int check_bit(u_int old,u_int new,u_int bit) |
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{ |
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int mask = 1 << bit; |
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if ((old & mask) && !(new & mask)) |
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return(1); /* bit unset */ |
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if (!(old & mask) && (new & mask)) |
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return(2); /* bit set */ |
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/* no change */ |
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return(0); |
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} |
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/* Sign-extension */ |
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static forced_inline m_int64_t sign_extend(m_int64_t x,int len) |
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{ |
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len = 64 - len; |
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return (x << len) >> len; |
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} |
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/* Extract bits from a 32-bit values */ |
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static inline int bits(m_uint32_t val,int start,int end) |
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{ |
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return((val >> start) & ((1 << (end-start+1)) - 1)); |
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} |
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/* Normalize a size */ |
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static inline u_int normalize_size(u_int val,u_int nb,int shift) |
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{ |
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return(((val+nb-1) & ~(nb-1)) >> shift); |
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} |
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/* Convert a 16-bit number between little and big endian */ |
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static forced_inline m_uint16_t swap16(m_uint16_t value) |
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{ |
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return((value >> 8) | ((value & 0xFF) << 8)); |
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} |
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/* Convert a 32-bit number between little and big endian */ |
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static forced_inline m_uint32_t swap32(m_uint32_t value) |
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{ |
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m_uint32_t result; |
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result = value >> 24; |
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result |= ((value >> 16) & 0xff) << 8; |
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result |= ((value >> 8) & 0xff) << 16; |
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result |= (value & 0xff) << 24; |
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return(result); |
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} |
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/* Convert a 64-bit number between little and big endian */ |
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static forced_inline m_uint64_t swap64(m_uint64_t value) |
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{ |
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m_uint64_t result; |
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result = (m_uint64_t)swap32(value & 0xffffffff) << 32; |
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result |= swap32(value >> 32); |
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return(result); |
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} |
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/* Get current time in number of msec since epoch */ |
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static inline m_tmcnt_t m_gettime(void) |
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{ |
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struct timeval tvp; |
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gettimeofday(&tvp,NULL); |
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return(((m_tmcnt_t)tvp.tv_sec * 1000) + ((m_tmcnt_t)tvp.tv_usec / 1000)); |
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} |
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/* Get current time in number of usec since epoch */ |
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static inline m_tmcnt_t m_gettime_usec(void) |
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{ |
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struct timeval tvp; |
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gettimeofday(&tvp,NULL); |
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return(((m_tmcnt_t)tvp.tv_sec * 1000000) + (m_tmcnt_t)tvp.tv_usec); |
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} |
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dpavlin |
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#ifdef __CYGWIN__ |
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#define GET_TIMEZONE _timezone |
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#else |
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#define GET_TIMEZONE timezone |
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#endif |
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/* Get current time in number of ms (localtime) */ |
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static inline m_tmcnt_t m_gettime_adj(void) |
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{ |
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struct timeval tvp; |
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struct tm tmx; |
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time_t gmt_adjust; |
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time_t ct; |
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gettimeofday(&tvp,NULL); |
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ct = tvp.tv_sec; |
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localtime_r(&ct,&tmx); |
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#if defined(__CYGWIN__) || defined(SUNOS) |
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gmt_adjust = -(tmx.tm_isdst ? GET_TIMEZONE - 3600 : GET_TIMEZONE); |
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#else |
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gmt_adjust = tmx.tm_gmtoff; |
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#endif |
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tvp.tv_sec += gmt_adjust; |
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return(((m_tmcnt_t)tvp.tv_sec * 1000) + ((m_tmcnt_t)tvp.tv_usec / 1000)); |
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} |
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dpavlin |
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/* Add an element to a list */ |
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m_list_t *m_list_add(m_list_t **head,void *data); |
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/* Dynamic sprintf */ |
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char *dyn_sprintf(const char *fmt,...); |
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/* Split a string */ |
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int m_strsplit(char *str,char delim,char **array,int max_count); |
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/* Tokenize a string */ |
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int m_strtok(char *str,char delim,char **array,int max_count); |
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/* Quote a string */ |
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char *m_strquote(char *buffer,size_t buf_len,char *str); |
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/* Ugly function that dumps a structure in hexa and ascii. */ |
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void mem_dump(FILE *f_output,u_char *pkt,u_int len); |
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/* Logging function */ |
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void m_flog(FILE *fd,char *module,char *fmt,va_list ap); |
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/* Logging function */ |
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void m_log(char *module,char *fmt,...); |
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/* Returns a line from specified file (remove trailing '\n') */ |
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char *m_fgets(char *buffer,int size,FILE *fd); |
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/* Read a file and returns it in a buffer */ |
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ssize_t m_read_file(char *filename,char **buffer); |
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/* Allocate aligned memory */ |
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void *m_memalign(size_t boundary,size_t size); |
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dpavlin |
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/* Block specified signal for calling thread */ |
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int m_signal_block(int sig); |
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/* Unblock specified signal for calling thread */ |
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int m_signal_unblock(int sig); |
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/* Set non-blocking mode on a file descriptor */ |
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int m_fd_set_non_block(int fd); |
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dpavlin |
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/* Map a memory zone from a file */ |
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u_char *memzone_map_file(int fd,size_t len); |
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/* Map a memory zone from a file, with copy-on-write (COW) */ |
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u_char *memzone_map_cow_file(int fd,size_t len); |
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/* Create a file to serve as a memory zone */ |
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int memzone_create_file(char *filename,size_t len,u_char **ptr); |
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/* Open a file to serve as a COW memory zone */ |
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int memzone_open_cow_file(char *filename,size_t len,u_char **ptr); |
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/* Open a file and map it in memory */ |
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int memzone_open_file(char *filename,u_char **ptr,off_t *fsize); |
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/* Compute NVRAM checksum */ |
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m_uint16_t nvram_cksum(m_uint16_t *ptr,size_t count); |
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dpavlin |
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#endif |