diff options
Diffstat (limited to 'opcodes/arc-ext.h')
| -rw-r--r-- | opcodes/arc-ext.h | 116 |
1 files changed, 53 insertions, 63 deletions
diff --git a/opcodes/arc-ext.h b/opcodes/arc-ext.h index 1143490..6f202bd 100644 --- a/opcodes/arc-ext.h +++ b/opcodes/arc-ext.h @@ -18,84 +18,74 @@ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ -#ifndef ARCEXT_H -#define ARCEXT_H +/******************************************************************************/ +/* */ +/* Outline: */ +/* This header file defines a table of extensions to the ARC processor */ +/* architecture. These extensions are read from the '.arcextmap' or */ +/* '.gnu.linkonce.arcextmap.<type>.<N>' sections in the ELF file which is */ +/* identified by the bfd parameter to the build_ARC_extmap function. */ +/* */ +/* These extensions may include: */ +/* core registers */ +/* auxiliary registers */ +/* instructions */ +/* condition codes */ +/* */ +/* Once the table has been constructed, accessor functions may be used to */ +/* retrieve information from it. */ +/* */ +/* The build_ARC_extmap constructor function build_ARC_extmap may be */ +/* called as many times as required; it will re-initialize the table each */ +/* time. */ +/* */ +/******************************************************************************/ + +#ifndef ARC_EXTENSIONS_H +#define ARC_EXTENSIONS_H - -enum { INST_HASH_BITS = 6 }; -enum {NUM_EXT_CORE = 59-32+1}; -enum {NUM_EXT_COND = 0x1f-0x10+1}; - -enum { INST_HASH_SIZE = 1 << INST_HASH_BITS }; -#define INST_HASH(MAJOR,MINOR) \ - ((((MAJOR) << 3) ^ (MINOR)) & ((INST_HASH_SIZE) - 1)) - -enum ExtOperType - { - EXT_INSTRUCTION, - EXT_CORE_REGISTER, - EXT_AUX_REGISTER, - EXT_COND_CODE, - EXT_AC_INSTRUCTION, - EXT_LONG_CORE_REGISTER = 0x06 - }; +#define IGNORE_FIRST_OPD 1 /* Define this if we do not want to encode instructions based on the ARCompact Programmer's Reference. */ #define UNMANGLED -struct ExtInstruction -{ - char major; - char minor; - char flags; - char *name; - struct ExtInstruction *next; -}; -struct ExtAuxRegister +/* this defines the kinds of extensions which may be read from the sections in + * the executable files + */ +enum ExtOperType { - long address; - char *name; - struct ExtAuxRegister *next; + EXT_INSTRUCTION, + EXT_CORE_REGISTER, + EXT_AUX_REGISTER, + EXT_COND_CODE, + EXT_AC_INSTRUCTION, + EXT_LONG_CORE_REGISTER = 0x06 }; -enum ExtReadWrite - { - REG_INVALID, - REG_READ, - REG_WRITE, - REG_READWRITE - }; - -struct ExtCoreRegister -{ - short number; - enum ExtReadWrite rw; - char *name; -}; -struct arcExtMap +enum ExtReadWrite { - struct ExtAuxRegister *auxRegisters; - struct ExtInstruction *instructions[INST_HASH_SIZE]; - struct ExtCoreRegister coreRegisters[NUM_EXT_CORE]; - char *condCodes[NUM_EXT_COND]; + REG_INVALID, + REG_READ, + REG_WRITE, + REG_READWRITE }; -extern int arcExtMap_add(void*, unsigned long); -extern enum ExtReadWrite arcExtMap_coreReadWrite (int); -extern const char *arcExtMap_coreRegName(int); -extern const char *arcExtMap_auxRegName(long); -extern const char *arcExtMap_condCodeName(int); -extern const char *arcExtMap_instName(int, int, int*); -/* Ravi: - warning: implicit declaration of function `build_ARC_extmap' -*/ -extern void build_ARC_extmap (bfd *); +/* constructor function */ +extern void build_ARC_extmap (bfd* text_bfd); +/* accessor functions */ +extern enum ExtReadWrite arcExtMap_coreReadWrite (int regnum); +extern const char* arcExtMap_coreRegName (int regnum); +extern const char* arcExtMap_auxRegName (long regnum); +extern const char* arcExtMap_condCodeName (int code); +extern const char* arcExtMap_instName (int opcode, int insn, int* flags); -#define IGNORE_FIRST_OPD 1 +/* dump function (for debugging) */ +extern void dump_ARC_extmap (void); -#endif /* __arcExtMap_h__ */ +#endif /* ARC_EXTENSIONS_H */ +/******************************************************************************/ |