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A32/decode: Split thumb16

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This commit is contained in:
MerryMage 2021-02-06 21:22:20 +00:00
parent ac9e1ccb1c
commit 6d0a049fb2
2 changed files with 97 additions and 98 deletions
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100
src/frontend/A32/decoder/thumb16.h
View file

@ -23,104 +23,8 @@ template<typename V>
std::optional<std::reference_wrapper<const Thumb16Matcher<V>>> DecodeThumb16(u16 instruction) {
static const std::vector<Thumb16Matcher<V>> table = {
#define INST(fn, name, bitstring) Decoder::detail::detail<Thumb16Matcher<V>>::GetMatcher(fn, name, bitstring)
// Shift (immediate), add, subtract, move and compare instructions
INST(&V::thumb16_LSL_imm, "LSL (imm)", "00000vvvvvmmmddd"),
INST(&V::thumb16_LSR_imm, "LSR (imm)", "00001vvvvvmmmddd"),
INST(&V::thumb16_ASR_imm, "ASR (imm)", "00010vvvvvmmmddd"),
INST(&V::thumb16_ADD_reg_t1, "ADD (reg, T1)", "0001100mmmnnnddd"),
INST(&V::thumb16_SUB_reg, "SUB (reg)", "0001101mmmnnnddd"),
INST(&V::thumb16_ADD_imm_t1, "ADD (imm, T1)", "0001110vvvnnnddd"),
INST(&V::thumb16_SUB_imm_t1, "SUB (imm, T1)", "0001111vvvnnnddd"),
INST(&V::thumb16_MOV_imm, "MOV (imm)", "00100dddvvvvvvvv"),
INST(&V::thumb16_CMP_imm, "CMP (imm)", "00101nnnvvvvvvvv"),
INST(&V::thumb16_ADD_imm_t2, "ADD (imm, T2)", "00110dddvvvvvvvv"),
INST(&V::thumb16_SUB_imm_t2, "SUB (imm, T2)", "00111dddvvvvvvvv"),
// Data-processing instructions
INST(&V::thumb16_AND_reg, "AND (reg)", "0100000000mmmddd"),
INST(&V::thumb16_EOR_reg, "EOR (reg)", "0100000001mmmddd"),
INST(&V::thumb16_LSL_reg, "LSL (reg)", "0100000010mmmddd"),
INST(&V::thumb16_LSR_reg, "LSR (reg)", "0100000011mmmddd"),
INST(&V::thumb16_ASR_reg, "ASR (reg)", "0100000100mmmddd"),
INST(&V::thumb16_ADC_reg, "ADC (reg)", "0100000101mmmddd"),
INST(&V::thumb16_SBC_reg, "SBC (reg)", "0100000110mmmddd"),
INST(&V::thumb16_ROR_reg, "ROR (reg)", "0100000111sssddd"),
INST(&V::thumb16_TST_reg, "TST (reg)", "0100001000mmmnnn"),
INST(&V::thumb16_RSB_imm, "RSB (imm)", "0100001001nnnddd"),
INST(&V::thumb16_CMP_reg_t1, "CMP (reg, T1)", "0100001010mmmnnn"),
INST(&V::thumb16_CMN_reg, "CMN (reg)", "0100001011mmmnnn"),
INST(&V::thumb16_ORR_reg, "ORR (reg)", "0100001100mmmddd"),
INST(&V::thumb16_MUL_reg, "MUL (reg)", "0100001101nnnddd"),
INST(&V::thumb16_BIC_reg, "BIC (reg)", "0100001110mmmddd"),
INST(&V::thumb16_MVN_reg, "MVN (reg)", "0100001111mmmddd"),
// Special data instructions
INST(&V::thumb16_ADD_reg_t2, "ADD (reg, T2)", "01000100Dmmmmddd"), // v4T, Low regs: v6T2
INST(&V::thumb16_CMP_reg_t2, "CMP (reg, T2)", "01000101Nmmmmnnn"), // v4T
INST(&V::thumb16_MOV_reg, "MOV (reg)", "01000110Dmmmmddd"), // v4T, Low regs: v6
// Store/Load single data item instructions
INST(&V::thumb16_LDR_literal, "LDR (literal)", "01001tttvvvvvvvv"),
INST(&V::thumb16_STR_reg, "STR (reg)", "0101000mmmnnnttt"),
INST(&V::thumb16_STRH_reg, "STRH (reg)", "0101001mmmnnnttt"),
INST(&V::thumb16_STRB_reg, "STRB (reg)", "0101010mmmnnnttt"),
INST(&V::thumb16_LDRSB_reg, "LDRSB (reg)", "0101011mmmnnnttt"),
INST(&V::thumb16_LDR_reg, "LDR (reg)", "0101100mmmnnnttt"),
INST(&V::thumb16_LDRH_reg, "LDRH (reg)", "0101101mmmnnnttt"),
INST(&V::thumb16_LDRB_reg, "LDRB (reg)", "0101110mmmnnnttt"),
INST(&V::thumb16_LDRSH_reg, "LDRSH (reg)", "0101111mmmnnnttt"),
INST(&V::thumb16_STR_imm_t1, "STR (imm, T1)", "01100vvvvvnnnttt"),
INST(&V::thumb16_LDR_imm_t1, "LDR (imm, T1)", "01101vvvvvnnnttt"),
INST(&V::thumb16_STRB_imm, "STRB (imm)", "01110vvvvvnnnttt"),
INST(&V::thumb16_LDRB_imm, "LDRB (imm)", "01111vvvvvnnnttt"),
INST(&V::thumb16_STRH_imm, "STRH (imm)", "10000vvvvvnnnttt"),
INST(&V::thumb16_LDRH_imm, "LDRH (imm)", "10001vvvvvnnnttt"),
INST(&V::thumb16_STR_imm_t2, "STR (imm, T2)", "10010tttvvvvvvvv"),
INST(&V::thumb16_LDR_imm_t2, "LDR (imm, T2)", "10011tttvvvvvvvv"),
// Generate relative address instructions
INST(&V::thumb16_ADR, "ADR", "10100dddvvvvvvvv"),
INST(&V::thumb16_ADD_sp_t1, "ADD (SP plus imm, T1)", "10101dddvvvvvvvv"),
INST(&V::thumb16_ADD_sp_t2, "ADD (SP plus imm, T2)", "101100000vvvvvvv"), // v4T
INST(&V::thumb16_SUB_sp, "SUB (SP minus imm)", "101100001vvvvvvv"), // v4T
// Hint instructions
INST(&V::thumb16_NOP, "NOP", "1011111100000000"), // v6T2
INST(&V::thumb16_SEV, "SEV", "1011111101000000"), // v7
INST(&V::thumb16_SEVL, "SEVL", "1011111101010000"), // v8
INST(&V::thumb16_WFE, "WFE", "1011111100100000"), // v7
INST(&V::thumb16_WFI, "WFI", "1011111100110000"), // v7
INST(&V::thumb16_YIELD, "YIELD", "1011111100010000"), // v7
// Miscellaneous 16-bit instructions
INST(&V::thumb16_SXTH, "SXTH", "1011001000mmmddd"), // v6
INST(&V::thumb16_SXTB, "SXTB", "1011001001mmmddd"), // v6
INST(&V::thumb16_UXTH, "UXTH", "1011001010mmmddd"), // v6
INST(&V::thumb16_UXTB, "UXTB", "1011001011mmmddd"), // v6
INST(&V::thumb16_PUSH, "PUSH", "1011010Mxxxxxxxx"), // v4T
INST(&V::thumb16_POP, "POP", "1011110Pxxxxxxxx"), // v4T
INST(&V::thumb16_SETEND, "SETEND", "101101100101x000"), // v6
INST(&V::thumb16_CPS, "CPS", "10110110011m0aif"), // v6
INST(&V::thumb16_REV, "REV", "1011101000mmmddd"), // v6
INST(&V::thumb16_REV16, "REV16", "1011101001mmmddd"), // v6
INST(&V::thumb16_REVSH, "REVSH", "1011101011mmmddd"), // v6
INST(&V::thumb16_BKPT, "BKPT", "10111110xxxxxxxx"), // v5
// Store/Load multiple registers
INST(&V::thumb16_STMIA, "STMIA", "11000nnnxxxxxxxx"),
INST(&V::thumb16_LDMIA, "LDMIA", "11001nnnxxxxxxxx"),
// Branch instructions
INST(&V::thumb16_BX, "BX", "010001110mmmm000"), // v4T
INST(&V::thumb16_BLX_reg, "BLX (reg)", "010001111mmmm000"), // v5T
INST(&V::thumb16_CBZ_CBNZ, "CBZ/CBNZ", "1011o0i1iiiiinnn"), // v6T2
INST(&V::thumb16_UDF, "UDF", "11011110--------"),
INST(&V::thumb16_SVC, "SVC", "11011111xxxxxxxx"),
INST(&V::thumb16_B_t1, "B (T1)", "1101ccccvvvvvvvv"),
INST(&V::thumb16_B_t2, "B (T2)", "11100vvvvvvvvvvv"),
#define INST(fn, name, bitstring) Decoder::detail::detail<Thumb16Matcher<V>>::GetMatcher(&V::fn, name, bitstring),
#include "thumb16.inc"
#undef INST
};

95
src/frontend/A32/decoder/thumb16.inc Normal file
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@ -0,0 +1,95 @@
// Shift (immediate) add, subtract, move and compare instructions
INST(thumb16_LSL_imm, "LSL (imm)", "00000vvvvvmmmddd")
INST(thumb16_LSR_imm, "LSR (imm)", "00001vvvvvmmmddd")
INST(thumb16_ASR_imm, "ASR (imm)", "00010vvvvvmmmddd")
INST(thumb16_ADD_reg_t1, "ADD (reg, T1)", "0001100mmmnnnddd")
INST(thumb16_SUB_reg, "SUB (reg)", "0001101mmmnnnddd")
INST(thumb16_ADD_imm_t1, "ADD (imm, T1)", "0001110vvvnnnddd")
INST(thumb16_SUB_imm_t1, "SUB (imm, T1)", "0001111vvvnnnddd")
INST(thumb16_MOV_imm, "MOV (imm)", "00100dddvvvvvvvv")
INST(thumb16_CMP_imm, "CMP (imm)", "00101nnnvvvvvvvv")
INST(thumb16_ADD_imm_t2, "ADD (imm, T2)", "00110dddvvvvvvvv")
INST(thumb16_SUB_imm_t2, "SUB (imm, T2)", "00111dddvvvvvvvv")
// Data-processing instructions
INST(thumb16_AND_reg, "AND (reg)", "0100000000mmmddd")
INST(thumb16_EOR_reg, "EOR (reg)", "0100000001mmmddd")
INST(thumb16_LSL_reg, "LSL (reg)", "0100000010mmmddd")
INST(thumb16_LSR_reg, "LSR (reg)", "0100000011mmmddd")
INST(thumb16_ASR_reg, "ASR (reg)", "0100000100mmmddd")
INST(thumb16_ADC_reg, "ADC (reg)", "0100000101mmmddd")
INST(thumb16_SBC_reg, "SBC (reg)", "0100000110mmmddd")
INST(thumb16_ROR_reg, "ROR (reg)", "0100000111sssddd")
INST(thumb16_TST_reg, "TST (reg)", "0100001000mmmnnn")
INST(thumb16_RSB_imm, "RSB (imm)", "0100001001nnnddd")
INST(thumb16_CMP_reg_t1, "CMP (reg, T1)", "0100001010mmmnnn")
INST(thumb16_CMN_reg, "CMN (reg)", "0100001011mmmnnn")
INST(thumb16_ORR_reg, "ORR (reg)", "0100001100mmmddd")
INST(thumb16_MUL_reg, "MUL (reg)", "0100001101nnnddd")
INST(thumb16_BIC_reg, "BIC (reg)", "0100001110mmmddd")
INST(thumb16_MVN_reg, "MVN (reg)", "0100001111mmmddd")
// Special data instructions
INST(thumb16_ADD_reg_t2, "ADD (reg, T2)", "01000100Dmmmmddd") // v4T, Low regs: v6T2
INST(thumb16_CMP_reg_t2, "CMP (reg, T2)", "01000101Nmmmmnnn") // v4T
INST(thumb16_MOV_reg, "MOV (reg)", "01000110Dmmmmddd") // v4T, Low regs: v6
// Store/Load single data item instructions
INST(thumb16_LDR_literal, "LDR (literal)", "01001tttvvvvvvvv")
INST(thumb16_STR_reg, "STR (reg)", "0101000mmmnnnttt")
INST(thumb16_STRH_reg, "STRH (reg)", "0101001mmmnnnttt")
INST(thumb16_STRB_reg, "STRB (reg)", "0101010mmmnnnttt")
INST(thumb16_LDRSB_reg, "LDRSB (reg)", "0101011mmmnnnttt")
INST(thumb16_LDR_reg, "LDR (reg)", "0101100mmmnnnttt")
INST(thumb16_LDRH_reg, "LDRH (reg)", "0101101mmmnnnttt")
INST(thumb16_LDRB_reg, "LDRB (reg)", "0101110mmmnnnttt")
INST(thumb16_LDRSH_reg, "LDRSH (reg)", "0101111mmmnnnttt")
INST(thumb16_STR_imm_t1, "STR (imm, T1)", "01100vvvvvnnnttt")
INST(thumb16_LDR_imm_t1, "LDR (imm, T1)", "01101vvvvvnnnttt")
INST(thumb16_STRB_imm, "STRB (imm)", "01110vvvvvnnnttt")
INST(thumb16_LDRB_imm, "LDRB (imm)", "01111vvvvvnnnttt")
INST(thumb16_STRH_imm, "STRH (imm)", "10000vvvvvnnnttt")
INST(thumb16_LDRH_imm, "LDRH (imm)", "10001vvvvvnnnttt")
INST(thumb16_STR_imm_t2, "STR (imm, T2)", "10010tttvvvvvvvv")
INST(thumb16_LDR_imm_t2, "LDR (imm, T2)", "10011tttvvvvvvvv")
// Generate relative address instructions
INST(thumb16_ADR, "ADR", "10100dddvvvvvvvv")
INST(thumb16_ADD_sp_t1, "ADD (SP plus imm, T1)", "10101dddvvvvvvvv")
INST(thumb16_ADD_sp_t2, "ADD (SP plus imm, T2)", "101100000vvvvvvv") // v4T
INST(thumb16_SUB_sp, "SUB (SP minus imm)", "101100001vvvvvvv") // v4T
// Hint instructions
INST(thumb16_NOP, "NOP", "1011111100000000") // v6T2
INST(thumb16_SEV, "SEV", "1011111101000000") // v7
INST(thumb16_SEVL, "SEVL", "1011111101010000") // v8
INST(thumb16_WFE, "WFE", "1011111100100000") // v7
INST(thumb16_WFI, "WFI", "1011111100110000") // v7
INST(thumb16_YIELD, "YIELD", "1011111100010000") // v7
// Miscellaneous 16-bit instructions
INST(thumb16_SXTH, "SXTH", "1011001000mmmddd") // v6
INST(thumb16_SXTB, "SXTB", "1011001001mmmddd") // v6
INST(thumb16_UXTH, "UXTH", "1011001010mmmddd") // v6
INST(thumb16_UXTB, "UXTB", "1011001011mmmddd") // v6
INST(thumb16_PUSH, "PUSH", "1011010Mxxxxxxxx") // v4T
INST(thumb16_POP, "POP", "1011110Pxxxxxxxx") // v4T
INST(thumb16_SETEND, "SETEND", "101101100101x000") // v6
INST(thumb16_CPS, "CPS", "10110110011m0aif") // v6
INST(thumb16_REV, "REV", "1011101000mmmddd") // v6
INST(thumb16_REV16, "REV16", "1011101001mmmddd") // v6
INST(thumb16_REVSH, "REVSH", "1011101011mmmddd") // v6
INST(thumb16_BKPT, "BKPT", "10111110xxxxxxxx") // v5
// Store/Load multiple registers
INST(thumb16_STMIA, "STMIA", "11000nnnxxxxxxxx")
INST(thumb16_LDMIA, "LDMIA", "11001nnnxxxxxxxx")
// Branch instructions
INST(thumb16_BX, "BX", "010001110mmmm000") // v4T
INST(thumb16_BLX_reg, "BLX (reg)", "010001111mmmm000") // v5T
INST(thumb16_CBZ_CBNZ, "CBZ/CBNZ", "1011o0i1iiiiinnn") // v6T2
INST(thumb16_UDF, "UDF", "11011110--------")
INST(thumb16_SVC, "SVC", "11011111xxxxxxxx")
INST(thumb16_B_t1, "B (T1)", "1101ccccvvvvvvvv")
INST(thumb16_B_t2, "B (T2)", "11100vvvvvvvvvvv")