diff options
Diffstat (limited to 'include/opcode/mips.h')
| -rw-r--r-- | include/opcode/mips.h | 298 |
1 files changed, 0 insertions, 298 deletions
diff --git a/include/opcode/mips.h b/include/opcode/mips.h index e2f72e0b0..89ea3e9a7 100644 --- a/include/opcode/mips.h +++ b/include/opcode/mips.h @@ -332,299 +332,6 @@ #define OP_SH_EVAOFFSET 7 #define OP_MASK_EVAOFFSET 0x1ff -/* Enumerates the various types of MIPS operand. */ -enum mips_operand_type { - /* Described by mips_int_operand. */ - OP_INT, - - /* Described by mips_mapped_int_operand. */ - OP_MAPPED_INT, - - /* Described by mips_msb_operand. */ - OP_MSB, - - /* Described by mips_reg_operand. */ - OP_REG, - - /* Described by mips_reg_pair_operand. */ - OP_REG_PAIR, - - /* Described by mips_pcrel_operand. */ - OP_PCREL, - - /* A performance register. The field is 5 bits in size, but the supported - values are much more restricted. */ - OP_PERF_REG, - - /* The final operand in a microMIPS ADDIUSP instruction. It mostly acts - as a normal 9-bit signed offset that is multiplied by four, but there - are four special cases: - - -2 * 4 => -258 * 4 - -1 * 4 => -257 * 4 - 0 * 4 => 256 * 4 - 1 * 4 => 257 * 4. */ - OP_ADDIUSP_INT, - - /* The target of a (D)CLO or (D)CLZ instruction. The operand spans two - 5-bit register fields, both of which must be set to the destination - register. */ - OP_CLO_CLZ_DEST, - - /* A register list for a microMIPS LWM or SWM instruction. The operand - size determines whether the 16-bit or 32-bit encoding is required. */ - OP_LWM_SWM_LIST, - - /* The register list for an emulated MIPS16 ENTRY or EXIT instruction. */ - OP_ENTRY_EXIT_LIST, - - /* The register list and frame size for a MIPS16 SAVE or RESTORE - instruction. */ - OP_SAVE_RESTORE_LIST, - - /* A 10-bit field VVVVVNNNNN used for octobyte and quadhalf instructions: - - V Meaning - ----- ------- - 0EEE0 8 copies of $vN[E], OB format - 0EE01 4 copies of $vN[E], QH format - 10110 all 8 elements of $vN, OB format - 10101 all 4 elements of $vN, QH format - 11110 8 copies of immediate N, OB format - 11101 4 copies of immediate N, QH format. */ - OP_MDMX_IMM_REG, - - /* A register operand that must match the destination register. */ - OP_REPEAT_DEST_REG, - - /* A register operand that must match the previous register. */ - OP_REPEAT_PREV_REG, - - /* $pc, which has no encoding in the architectural instruction. */ - OP_PC -}; - -/* Enumerates the types of MIPS register. */ -enum mips_reg_operand_type { - /* General registers $0-$31. Software names like $at can also be used. */ - OP_REG_GP, - - /* Floating-point registers $f0-$f31. */ - OP_REG_FP, - - /* Coprocessor condition code registers $cc0-$cc7. FPU condition codes - can also be written $fcc0-$fcc7. */ - OP_REG_CCC, - - /* FPRs used in a vector capacity. They can be written $f0-$f31 - or $v0-$v31, although the latter form is not used for the VR5400 - vector instructions. */ - OP_REG_VEC, - - /* DSP accumulator registers $ac0-$ac3. */ - OP_REG_ACC, - - /* Coprocessor registers $0-$31. Mnemonic names like c0_cause can - also be used in some contexts. */ - OP_REG_COPRO, - - /* Hardware registers $0-$31. Mnemonic names like hwr_cpunum can - also be used in some contexts. */ - OP_REG_HW -}; - -/* Base class for all operands. */ -struct mips_operand -{ - /* The type of the operand. */ - enum mips_operand_type type; - - /* The operand occupies SIZE bits of the instruction, starting at LSB. */ - unsigned short size; - unsigned short lsb; -}; - -/* Describes an integer operand with a regular encoding pattern. */ -struct mips_int_operand -{ - struct mips_operand root; - - /* The low ROOT.SIZE bits of MAX_VAL encodes (MAX_VAL + BIAS) << SHIFT. - The cyclically previous field value encodes 1 << SHIFT less than that, - and so on. E.g. - - - for { { T, 4, L }, 14, 0, 0 }, field values 0...14 encode themselves, - but 15 encodes -1. - - - { { T, 8, L }, 127, 0, 2 } is a normal signed 8-bit operand that is - shifted left two places. - - - { { T, 3, L }, 8, 0, 0 } is a normal unsigned 3-bit operand except - that 0 encodes 8. - - - { { ... }, 0, 1, 3 } means that N encodes (N + 1) << 3. */ - unsigned int max_val; - int bias; - unsigned int shift; - - /* True if the operand should be printed as hex rather than decimal. */ - bfd_boolean print_hex; -}; - -/* Uses a lookup table to describe a small integer operand. */ -struct mips_mapped_int_operand -{ - struct mips_operand root; - - /* Maps each encoding value to the integer that it represents. */ - const int *int_map; - - /* True if the operand should be printed as hex rather than decimal. */ - bfd_boolean print_hex; -}; - -/* An operand that encodes the most significant bit position of a bitfield. - Given a bitfield that spans bits [MSB, LSB], some operands of this type - encode MSB directly while others encode MSB - LSB. Each operand of this - type is preceded by an integer operand that specifies LSB. - - The assembly form varies between instructions. For some instructions, - such as EXT, the operand is written as the bitfield size. For others, - such as EXTS, it is written in raw MSB - LSB form. */ -struct mips_msb_operand -{ - struct mips_operand root; - - /* The assembly-level operand encoded by a field value of 0. */ - int bias; - - /* True if the operand encodes MSB directly, false if it encodes - MSB - LSB. */ - bfd_boolean add_lsb; - - /* The maximum value of MSB + 1. */ - unsigned int opsize; -}; - -/* Describes a single register operand. */ -struct mips_reg_operand -{ - struct mips_operand root; - - /* The type of register. */ - enum mips_reg_operand_type reg_type; - - /* If nonnull, REG_MAP[N] gives the register associated with encoding N, - otherwise the encoding is the same as the register number. */ - const unsigned char *reg_map; -}; - -/* Describes an operand that encodes a pair of registers. */ -struct mips_reg_pair_operand -{ - struct mips_operand root; - - /* The type of register. */ - enum mips_reg_operand_type reg_type; - - /* Encoding N represents REG1_MAP[N], REG2_MAP[N]. */ - unsigned char *reg1_map; - unsigned char *reg2_map; -}; - -/* Describes an operand that is calculated relative to a base PC. - The base PC is usually the address of the following instruction, - but the rules for MIPS16 instructions like ADDIUPC are more complicated. */ -struct mips_pcrel_operand -{ - struct mips_operand root; - - /* The low ALIGN_LOG2 bits of the base PC are cleared to give PC'. */ - unsigned int align_log2 : 8; - - /* The operand is shifted left SHIFT places and added to PC'. - The operand is signed if IS_SIGNED. */ - unsigned int shift : 8; - unsigned int is_signed : 1; - - /* If INCLUDE_ISA_BIT, the ISA bit of the original base PC is then - reinstated. This is true for jumps and branches and false for - PC-relative data instructions. */ - unsigned int include_isa_bit : 1; - - /* If FLIP_ISA_BIT, the ISA bit of the result is inverted. - This is true for JALX and false otherwise. */ - unsigned int flip_isa_bit : 1; -}; - -/* Return a version of INSN in which the field specified by OPERAND - has value UVAL. */ - -static inline unsigned int -mips_insert_operand (const struct mips_operand *operand, unsigned int insn, - unsigned int uval) -{ - unsigned int mask; - - mask = (1 << operand->size) - 1; - insn &= ~(mask << operand->lsb); - insn |= (uval & mask) << operand->lsb; - return insn; -} - -/* Extract OPERAND from instruction INSN. */ - -static inline unsigned int -mips_extract_operand (const struct mips_operand *operand, unsigned int insn) -{ - return (insn >> operand->lsb) & ((1 << operand->size) - 1); -} - -/* UVAL is the value encoded by OPERAND. Return it in signed form. */ - -static inline int -mips_signed_operand (const struct mips_operand *operand, unsigned int uval) -{ - unsigned int sign_bit, mask; - - mask = (1 << operand->size) - 1; - sign_bit = 1 << (operand->size - 1); - return ((uval + sign_bit) & mask) - sign_bit; -} - -/* Return the integer that OPERAND encodes as UVAL. */ - -static inline int -mips_decode_int_operand (const struct mips_int_operand *operand, - unsigned int uval) -{ - uval |= (operand->max_val - uval) & -(1 << operand->root.size); - uval += operand->bias; - uval <<= operand->shift; - return uval; -} - -/* PC-relative operand OPERAND has value UVAL and is relative to BASE_PC. - Return the address that it encodes. */ - -static inline bfd_vma -mips_decode_pcrel_operand (const struct mips_pcrel_operand *operand, - bfd_vma base_pc, unsigned int uval) -{ - bfd_vma addr; - - addr = base_pc & -(1 << operand->align_log2); - if (operand->is_signed) - addr += mips_signed_operand (&operand->root, uval) * (1 << operand->shift); - else - addr += uval << operand->shift; - if (operand->include_isa_bit) - addr |= base_pc & 1; - if (operand->flip_isa_bit) - addr ^= 1; - return addr; -} - /* This structure holds information for a particular instruction. */ struct mips_opcode @@ -1508,7 +1215,6 @@ enum Many instructions are short hand for other instructions (i.e., The jal <register> instruction is short for jalr <register>). */ -extern const struct mips_operand *decode_mips_operand (const char *); extern const struct mips_opcode mips_builtin_opcodes[]; extern const int bfd_mips_num_builtin_opcodes; extern struct mips_opcode *mips_opcodes; @@ -1599,8 +1305,6 @@ extern int bfd_mips_num_opcodes; "l" register list for entry instruction "L" register list for exit instruction - "I" an immediate value used for macros - The remaining codes may be extended. Except as otherwise noted, the full extended operand is a 16 bit signed value. "<" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 5 bit unsigned) @@ -1687,7 +1391,6 @@ extern int bfd_mips_num_opcodes; FP_D (never used) */ -extern const struct mips_operand *decode_mips16_operand (char, bfd_boolean); extern const struct mips_opcode mips16_opcodes[]; extern const int bfd_mips16_num_opcodes; @@ -2075,7 +1778,6 @@ extern const int bfd_mips16_num_opcodes; " bcdefghij lmn pq st xyz" */ -extern const struct mips_operand *decode_micromips_operand (const char *); extern const struct mips_opcode micromips_opcodes[]; extern const int bfd_micromips_num_opcodes; |