diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/dis-arm.inc.h | 209 | ||||
-rw-r--r-- | lib/dis.h | 58 |
2 files changed, 168 insertions, 99 deletions
diff --git a/lib/dis-arm.inc.h b/lib/dis-arm.inc.h index d03025d..fe5c45b 100644 --- a/lib/dis-arm.inc.h +++ b/lib/dis-arm.inc.h @@ -1,98 +1,151 @@ +#include "dis.h" -static inline tdis_ret P(GPR_Rt_addr_offset_none_addr_S_21_STL)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { +#define r(nn) {.n = nn, .out = false} +#define rs(nn, l, s) {.n = bs_slice(nn, l, s), .out = false} +#define rout(nn) {.n = nn, .out = true} +#define rsout(nn, l, s) {.n = bs_slice(nn, l, s), .out = true} +#define data(...) \ + struct dis_data_operand ops[] = {__VA_ARGS__}; \ + return P(data)(ctx, ops, sizeof(ops)/sizeof(*ops)); + +static tdis_ret P(GPRPairOp_Rt_addr_offset_none_addr_S_2_STLEXD)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { + data(r(Rt), r(addr)); } -static inline tdis_ret P(GPR_Rn_GPR_Rm_1_ADDrr)(tdis_ctx ctx, struct bitslice Rm, struct bitslice Rn) { +static tdis_ret P(GPR_Rm_unk_Rd_1_MOVr)(tdis_ctx ctx, struct bitslice Rm, struct bitslice Rd) { + data(rout(Rd), r(Rm)); } -static inline tdis_ret P(GPR_Rn_3_ADDri)(tdis_ctx ctx, struct bitslice Rn) { +static tdis_ret P(GPR_Rn_GPR_Rm_unk_Rd_1_ADDrr)(tdis_ctx ctx, struct bitslice Rm, struct bitslice Rd, struct bitslice Rn) { + data(rout(Rd), r(Rm), r(Rn)); } -static inline tdis_ret P(addr_offset_none_addr_unk_Rt_2_SWP)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { +static tdis_ret P(GPR_Rn_so_reg_imm_shift_unk_Rd_1_ADDrsi)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rd, struct bitslice Rn) { + data(rs(shift, 0, 4), r(Rn), rout(Rd)); } -static inline tdis_ret P(GPRPairOp_Rt_addr_offset_none_addr_2_STLEXD)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { - return P(reg)(ctx, addr, 0, 4); +static tdis_ret P(GPR_Rn_so_reg_reg_shift_unk_Rd_1_ADDrsr)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rd, struct bitslice Rn) { + data(rs(shift, 0, 4), rs(shift, 8, 4), r(Rn), rout(Rd)); } -static inline tdis_ret P(GPR_Rt_addrmode3_addr_S_2_STRD)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { - return P(regs3)(ctx, addr, 9, 4, addr, 0, 4, Rt, 0, 4); +static tdis_ret P(GPR_Rn_unk_Rd_1_ADDri)(tdis_ctx ctx, struct bitslice Rd, struct bitslice Rn) { + data(rout(Rd), r(Rn)); } -static inline tdis_ret P(GPR_Rt_addrmode3_pre_addr_S_2_STRD_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { - return P(regs3)(ctx, addr, 9, 4, addr, 0, 4, Rt, 0, 4); +static tdis_ret P(GPR_Rt_4_MCR)(tdis_ctx ctx, struct bitslice Rt) { + data(r(Rt)); } -static inline tdis_ret P(adrlabel_label_1_ADR)(tdis_ctx ctx, struct bitslice label) { - return P(adr)(ctx, ctx->pc + 8 + bs_get(label, ctx->op)); +static tdis_ret P(GPR_Rt_addr_offset_none_addr_S_10_STL)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { + data(r(addr), rout(Rt)); } -static inline tdis_ret P(br_target_target_B_1_Bcc)(tdis_ctx ctx, struct bitslice target) { - return P(branch)(ctx, ctx->pc + 8 + sext(bs_get(target, ctx->op), 24)); +static tdis_ret P(GPR_Rt_addr_offset_none_addr_am2offset_imm_offset_S_4_STRBT_POST_IMM)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice Rt, struct bitslice addr) { + data(r(addr), r(Rt)); } -static inline tdis_ret P(GPR_Rt_S_1_STRrs)(tdis_ctx ctx, struct bitslice Rt) { +static tdis_ret P(GPR_Rt_addr_offset_none_addr_am2offset_reg_offset_S_4_STRBT_POST_REG)(tdis_ctx ctx, struct bitslice offset, struct bitslice Rt, struct bitslice addr) { + data(r(addr), rs(offset, 0, 4), r(Rt)); } -static inline tdis_ret P(GPRnopc_Rt_S_1_STRBrs)(tdis_ctx ctx, struct bitslice Rt) { +static tdis_ret P(GPR_Rt_addr_offset_none_addr_am3offset_offset_S_2_STRD_POST)(tdis_ctx ctx, struct bitslice offset, struct bitslice Rt, struct bitslice addr) { + data(r(addr), rs(offset, 0, 4), r(Rt)); } -static inline tdis_ret P(unk_Rt_11_VMOVRRD)(tdis_ctx ctx, struct bitslice Rt) {} -static inline tdis_ret P(addr_offset_none_addr_8_STC2L_OPTION)(tdis_ctx ctx, struct bitslice addr) {} -static inline tdis_ret P(GPR_Rt_addrmode_imm12_addr_1_STRi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(addrmode5_addr_S_8_STC2L_OFFSET)(tdis_ctx ctx, struct bitslice addr) { - return P(reg)(ctx, addr, 9, 4); +static tdis_ret P(GPR_Rt_addr_offset_none_addr_postidx_imm8_offset_S_1_STRHTi)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice Rt, struct bitslice addr) { + data(r(addr), r(Rt)); } -static inline tdis_ret P(addrmode5_pre_addr_S_4_STC2L_PRE)(tdis_ctx ctx, struct bitslice addr) { - return P(reg)(ctx, addr, 9, 4); +static tdis_ret P(GPR_Rt_addrmode3_addr_S_2_STRD)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 9, 4), rs(addr, 0, 4), r(Rt)); } -static inline tdis_ret P(GPRnopc_Rt_addrmode_imm12_addr_1_STRBi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { - return P(reg)(ctx, addr, 13, 4); +static tdis_ret P(GPR_Rt_addrmode3_pre_addr_S_2_STRD_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 9, 4), rs(addr, 0, 4), r(Rt)); } -static inline tdis_ret P(GPR_Rt_addrmode_imm12_pre_addr_2_STRB_PRE_IMM)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { - return P(reg)(ctx, addr, 13, 4); +static tdis_ret P(GPR_Rt_addrmode_imm12_addr_S_1_STRi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 13, 4), r(Rt)); } -static inline tdis_ret P(GPR_Rt_ldst_so_reg_addr_2_STRB_PRE_REG)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { - return P(regs2)(ctx, addr, 13, 4, addr, 0, 4); +static tdis_ret P(GPR_Rt_addrmode_imm12_pre_addr_S_2_STRB_PRE_IMM)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 13, 4), r(Rt)); +} +static tdis_ret P(GPR_Rt_ldst_so_reg_addr_S_2_STRB_PRE_REG)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 0, 4), rs(addr, 13, 4), r(Rt)); +} +static tdis_ret P(GPR_Rt_ldst_so_reg_shift_S_1_STRrs)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rt) { + data(rs(shift, 0, 4), rs(shift, 13, 4), r(Rt)); +} +static tdis_ret P(GPRnopc_Rt_4_MCRR)(tdis_ctx ctx, UNUSED struct bitslice Rt) { + // need Rt2 but whatever + return P(unidentified)(ctx); +} +static tdis_ret P(GPRnopc_Rt_addrmode_imm12_addr_S_1_STRBi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 13, 4), r(Rt)); +} +static tdis_ret P(GPRnopc_Rt_ldst_so_reg_shift_S_1_STRBrs)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rt) { + data(rs(shift, 13, 4), rs(shift, 0, 4), r(Rt)); +} +static tdis_ret P(addr_offset_none_addr_4_LDC2L_OPTION)(tdis_ctx ctx, struct bitslice addr) { + data(r(addr)); +} +static tdis_ret P(addr_offset_none_addr_S_4_STC2L_OPTION)(tdis_ctx ctx, struct bitslice addr) { + data(r(addr)); +} +static tdis_ret P(addr_offset_none_addr_am2offset_imm_offset_unk_Rt_4_LDRBT_POST_IMM)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice Rt, struct bitslice addr) { + data(r(addr), rout(Rt)); +} +static tdis_ret P(addr_offset_none_addr_am2offset_reg_offset_unk_Rt_4_LDRBT_POST_REG)(tdis_ctx ctx, struct bitslice offset, struct bitslice Rt, struct bitslice addr) { + data(r(addr), rs(offset, 0, 4), rout(Rt)); +} +static tdis_ret P(addr_offset_none_addr_am3offset_offset_unk_Rt_4_LDRD_POST)(tdis_ctx ctx, struct bitslice offset, struct bitslice Rt, struct bitslice addr) { + data(r(addr), rs(offset, 0, 4), rout(Rt)); +} +static tdis_ret P(addr_offset_none_addr_postidx_imm8_offset_unk_Rt_3_LDRHTi)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice Rt, struct bitslice addr) { + data(r(addr), rout(Rt)); +} +static tdis_ret P(addr_offset_none_addr_postidx_imm8s4_offset_4_LDC2L_POST)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice addr) { + data(r(addr)); +} +static tdis_ret P(addr_offset_none_addr_postidx_imm8s4_offset_S_4_STC2L_POST)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice addr) { + data(r(addr)); +} +static tdis_ret P(addr_offset_none_addr_unk_Rt_16_LDA)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { + data(r(addr), rout(Rt)); +} +static tdis_ret P(addrmode3_addr_unk_Rt_4_LDRD)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rsout(addr, 9, 4), rs(addr, 0, 4), r(Rt)); +} +static tdis_ret P(addrmode3_pre_addr_unk_Rt_4_LDRD_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rsout(addr, 9, 4), rs(addr, 0, 4), r(Rt)); +} +static tdis_ret P(addrmode5_addr_8_LDC2L_OFFSET)(tdis_ctx ctx, struct bitslice addr) { + data(rsout(addr, 9, 4)); +} +static tdis_ret P(addrmode5_addr_S_4_STC2L_OFFSET)(tdis_ctx ctx, struct bitslice addr) { + data(rs(addr, 9, 4)); +} +static tdis_ret P(addrmode5_pre_addr_4_LDC2L_PRE)(tdis_ctx ctx, struct bitslice addr) { + data(rs(addr, 9, 4)); +} +static tdis_ret P(addrmode5_pre_addr_S_4_STC2L_PRE)(tdis_ctx ctx, struct bitslice addr) { + data(rs(addr, 9, 4)); +} +static tdis_ret P(addrmode_imm12_addr_unk_Rt_2_LDRBi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 13, 4), rout(Rt)); +} +static tdis_ret P(addrmode_imm12_pre_addr_unk_Rt_2_LDRB_PRE_IMM)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 13, 4), rout(Rt)); +} +static tdis_ret P(adrlabel_label_1_ADR)(tdis_ctx ctx, struct bitslice label) { + return P(adr)(ctx, ctx->pc + 8 + bs_get(label, ctx->op)); +} +static tdis_ret P(br_target_target_B_1_Bcc)(tdis_ctx ctx, struct bitslice target) { + return P(branch)(ctx, ctx->pc + 8 + sext(bs_get(target, ctx->op), 24)); +} +static tdis_ret P(ldst_so_reg_addr_unk_Rt_2_LDRB_PRE_REG)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 0, 4), rs(addr, 13, 4), rout(Rt)); +} +static tdis_ret P(ldst_so_reg_shift_unk_Rt_2_LDRBrs)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rt) { + data(rs(shift, 0, 4), rs(shift, 13, 4), rout(Rt)); +} +static tdis_ret P(tcGPR_Rm_unk_Rd_1_MOVr_TC)(tdis_ctx ctx, struct bitslice Rm, struct bitslice Rd) { + data(rout(Rd), r(Rm)); +} +static tdis_ret P(unk_Rd_5_MOVTi16)(tdis_ctx ctx, struct bitslice Rd) { + data(rout(Rd)); +} +static inline tdis_ret P(unk_Rt_13_MRC)(tdis_ctx ctx, struct bitslice Rt) { + data(rout(Rt)); } - -static inline tdis_ret P(so_reg_imm_shift_14_ADCrsi)(tdis_ctx ctx, struct bitslice shift) {} -static inline tdis_ret P(so_reg_reg_shift_14_ADCrsr)(tdis_ctx ctx, struct bitslice shift) {} -static inline tdis_ret P(addr_offset_none_addr_unk_Rt_31_LDA)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { - /* hope nobody's SWPping into PC */ - return P(reg)(ctx, addr, 0, 4); -} -static inline tdis_ret P(GPR_Rt_addr_offset_none_addr_S_21_STL)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { - return P(regs)(ctx, addr, 0, 4, addr, 0, 0, &Rt); -} -static inline tdis_ret P(adrlabel_label_1_ADR)(tdis_ctx ctx, struct bitslice label) {} -static inline tdis_ret P(br_target_target_B_1_Bcc)(tdis_ctx ctx, struct bitslice target) {} -static inline tdis_ret P(GPR_Rt_4_MCR)(tdis_ctx ctx, struct bitslice Rt) {} -static inline tdis_ret P(GPRnopc_Rt_4_MCRR)(tdis_ctx ctx, struct bitslice Rt) {} -static inline tdis_ret P(unk_Rt_13_MRC)(tdis_ctx ctx, struct bitslice Rt) {} -static inline tdis_ret P(addr_offset_none_addr_S_8_STC2L_OPTION)(tdis_ctx ctx, struct bitslice addr) {} -static inline tdis_ret P(addr_offset_none_addr_8_LDC2L_OPTION)(tdis_ctx ctx, struct bitslice addr) {} -static inline tdis_ret P(GPR_Rn_GPR_Rm_1_ADDrr)(tdis_ctx ctx, struct bitslice Rm, struct bitslice Rn) { - return P(regs2)(ctx, Rm, 0, 4, Rn, 0, 4); -} -static inline tdis_ret P(GPR_Rn_so_reg_imm_shift_1_ADDrsi)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rn) {} -static inline tdis_ret P(GPR_Rn_so_reg_reg_shift_1_ADDrsr)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rn) {} -static inline tdis_ret P(GPR_Rn_1_ADDri)(tdis_ctx ctx, struct bitslice Rn) { - return P(reg)(ctx, Rn, 0, 4); -} -static inline tdis_ret P(addrmode3_addr_unk_Rt_4_LDRD)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(GPR_Rt_addrmode3_addr_S_2_STRD)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(GPR_Rt_addrmode_imm12_addr_S_1_STRi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(GPR_Rt_ldst_so_reg_shift_S_1_STRrs)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rt) {} -static inline tdis_ret P(addrmode5_addr_8_LDC2L_OFFSET)(tdis_ctx ctx, struct bitslice addr) {} -static inline tdis_ret P(addrmode3_pre_addr_unk_Rt_4_LDRD_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(GPR_Rt_addrmode3_pre_addr_S_2_STRD_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(GPRnopc_Rt_addrmode_imm12_addr_S_1_STRBi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(GPRnopc_Rt_ldst_so_reg_shift_S_1_STRBrs)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rt) {} -static inline tdis_ret P(addrmode5_addr_S_4_STC2L_OFFSET)(tdis_ctx ctx, struct bitslice addr) {} -static inline tdis_ret P(addrmode_imm12_addr_unk_Rt_2_LDRBi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(ldst_so_reg_shift_unk_Rt_2_LDRBrs)(tdis_ctx ctx, struct bitslice shift, struct bitslice Rt) {} -static inline tdis_ret P(GPR_Rt_addrmode_imm12_pre_addr_S_2_STRB_PRE_IMM)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(addrmode5_pre_addr_S_4_STC2L_PRE)(tdis_ctx ctx, struct bitslice addr) {} -static inline tdis_ret P(GPR_Rt_ldst_so_reg_addr_S_2_STRB_PRE_REG)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(addrmode_imm12_pre_addr_unk_Rt_2_LDRB_PRE_IMM)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(ldst_so_reg_addr_unk_Rt_2_LDRB_PRE_REG)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) {} -static inline tdis_ret P(addrmode5_pre_addr_4_LDC2L_PRE)(tdis_ctx ctx, struct bitslice addr) {} -static inline tdis_ret P(GPR_Rm_1_MOVr)(tdis_ctx ctx, struct bitslice Rm) {} -static inline tdis_ret P(tcGPR_Rm_1_MOVr_TC)(tdis_ctx ctx, struct bitslice Rm) {} -static inline tdis_ret P(GPRPairOp_Rt_addr_offset_none_addr_S_2_STLEXD)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) {} - -static inline tdis_ret P(dis_arm)(tdis_ctx ctx) { +static tdis_ret P(dis_arm)(tdis_ctx ctx) { unsigned op = ctx->op; - #include "../generated/transform-dis-arm.inc" + #include "../generated/transform-dis-arm.inc.h" } @@ -1,8 +1,7 @@ #pragma once +#include <stdbool.h> -static inline int sext(unsigned val, int bits) { - return val & (1 << (bits - 1)) ? ((int)val - (1 << bits)) : (int)val; -} +#define UNUSED __attribute__((unused)) struct bitslice_run { int inpos, outpos, len; @@ -13,35 +12,52 @@ struct bitslice { const struct bitslice_run *runs; }; -__attribute__((always_inline)) +struct dis_data_operand { + struct bitslice n; + bool out; +}; + +static inline int sext(unsigned val, int bits) { + return val & (1 << (bits - 1)) ? ((int)val - (1 << bits)) : (int)val; +} + static inline unsigned bs_get(struct bitslice bs, unsigned op) { unsigned ret = 0; for(int i = 0; i < bs.nruns; i++) { const struct bitslice_run *run = &bs.runs[i]; - unsigned masked = op & ((1 << run->len) - 1); - if (run->outpos < run->inpos) - masked >>= run->inpos - run->outpos; - else if (run->outpos > run->inpos) - masked <<= run->outpos - run->inpos; - ret |= masked; + unsigned val = (op >> run->inpos) & ((1 << run->len) - 1); + ret |= val << run->outpos; } return ret; } -__attribute__((always_inline)) -static inline unsigned bs_set(struct bitslice bs, unsigned val, unsigned op) { +static inline unsigned bs_set(struct bitslice bs, unsigned new, unsigned op) { for(int i = 0; i < bs.nruns; i++) { const struct bitslice_run *run = &bs.runs[i]; unsigned mask = (1 << run->len) - 1; - unsigned masked = val & mask; - if (run->outpos < run->inpos) { - masked <<= run->inpos - run->outpos; - mask <<= run->inpos - run->outpos; - } else if (run->outpos > run->inpos) { - masked >>= run->outpos - run->inpos; - mask >>= run->outpos - run->inpos; - } - op = (op & ~mask) | masked; + unsigned val = (new >> run->outpos) & mask; + op = (op & ~(mask << run->inpos)) | (val << run->inpos); } return op; } + +static inline struct bitslice bs_slice_(struct bitslice bs, struct bitslice_run *runs, int lo, int size) { + int nruns = 0; + for(int i = 0; i < bs.nruns; i++) { + struct bitslice_run inr = bs.runs[i]; + inr.outpos -= lo; + if(inr.outpos < 0) { + inr.len += inr.outpos; + inr.inpos -= inr.outpos; + inr.outpos = 0; + } + if(inr.outpos + inr.len > size) + inr.len = size - inr.outpos; + if(inr.len > 0) + runs[nruns++] = (struct bitslice_run) {inr.inpos, inr.outpos, inr.len}; + } + return (struct bitslice) {nruns, runs}; +} +#define bs_slice(bs, lo, size) \ + bs_slice_(bs, alloca((bs).nruns * sizeof(struct bitslice_run)), lo, size) + |