diff options
Diffstat (limited to 'lib/arm/dis-thumb2.inc.h')
| -rw-r--r-- | lib/arm/dis-thumb2.inc.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/lib/arm/dis-thumb2.inc.h b/lib/arm/dis-thumb2.inc.h new file mode 100644 index 0000000..a9d7f9d --- /dev/null +++ b/lib/arm/dis-thumb2.inc.h @@ -0,0 +1,185 @@ +#include "dis.h" + +static inline unsigned flip16(unsigned op) { + return op >> 16 | op << 16; +} + +static inline enum pcrel_load_mode get_thumb2_load_mode(unsigned op) { + op = flip16(op); + bool sign = (op >> 8) & 1; + switch ((op >> 5) & 3) { + case 0: return sign ? PLM_S8 : PLM_U8; + case 1: return sign ? PLM_S16 : PLM_U16; + case 2: return PLM_U32; + default: __builtin_abort(); + } +} + +static INLINE void P(GPR_Rm_unk_Rd_1_t2MOVr)(tdis_ctx ctx, struct bitslice Rm, struct bitslice Rd) { + data(rout(Rd), r(Rm)); +} +static INLINE void P(GPR_Rn_reglist_regs_4_t2LDMDB)(tdis_ctx ctx, struct bitslice regs, UNUSED struct bitslice Rn) { + unsigned regs_val = bs_get(regs, ctx->op); + if(regs_val & (1 << 15)) + return P(ret)(ctx); + return P(unidentified)(ctx); +} +static INLINE void P(GPR_Rn_reglist_regs_S_4_t2STMDB)(tdis_ctx ctx, UNUSED struct bitslice regs, UNUSED struct bitslice Rn) { + return P(unidentified)(ctx); +} +static INLINE void P(GPR_Rn_unk_Rd_1_t2ADDri12)(tdis_ctx ctx, struct bitslice Rd, struct bitslice Rn) { + data(rout(Rd), r(Rn)); +} +static INLINE void P(GPR_Rt_8_VMOVDRR)(tdis_ctx ctx, UNUSED struct bitslice Rt) { + return P(unidentified)(ctx); /* don't care */ +} +static INLINE void P(GPR_Rt_t2addrmode_imm12_addr_S_1_t2STRi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 13, 4), r(Rt)); +} +static INLINE void P(GPR_Rt_t2addrmode_negimm8_addr_S_1_t2STRi8)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 9, 4), r(Rt)); +} +static INLINE void P(GPR_Rt_t2addrmode_so_reg_addr_S_1_t2STRs)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 6, 4), rs(addr, 2, 4), r(Rt)); +} +static INLINE void P(GPRnopc_Rn_rGPR_Rm_unk_Rd_1_t2ADDrr)(tdis_ctx ctx, struct bitslice Rm, struct bitslice Rd, struct bitslice Rn) { + data(rout(Rd), r(Rm), r(Rn)); +} +static INLINE void P(GPRnopc_Rn_unk_Rd_2_t2ADDri)(tdis_ctx ctx, struct bitslice Rd, struct bitslice Rn) { + data(rout(Rd), r(Rn)); +} +static INLINE void P(GPRnopc_Rt_t2addrmode_imm8_pre_addr_S_1_t2STR_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 9, 4), r(Rt)); +} +static INLINE void P(GPRnopc_Rt_addr_offset_none_Rn_t2am_imm8_offset_offset_S_1_t2STR_POST)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice Rt, struct bitslice Rn) { + data(r(Rt), r(Rn)); +} +static INLINE void P(rGPR_Rt_addr_offset_none_addr_S_4_t2STL)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { + data(rout(Rt), r(addr)); +} +static INLINE void P(rGPR_Rt_addr_offset_none_addr_unk_Rd_S_7_t2STLEX)(tdis_ctx ctx, struct bitslice Rd, struct bitslice Rt, struct bitslice addr) { + data(rout(Rd), r(Rt), r(addr)); +} +static INLINE void P(addr_offset_none_addr_4_t2LDC2L_OPTION)(tdis_ctx ctx, struct bitslice addr) { + data(r(addr)); +} +static INLINE void P(addr_offset_none_addr_S_4_t2STC2L_OPTION)(tdis_ctx ctx, struct bitslice addr) { + data(r(addr)); +} +static INLINE void P(addr_offset_none_addr_postidx_imm8s4_offset_4_t2LDC2L_POST)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice addr) { + data(r(addr)); +} +static INLINE void P(addr_offset_none_addr_postidx_imm8s4_offset_S_4_t2STC2L_POST)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice addr) { + data(r(addr)); +} +static INLINE void P(addr_offset_none_addr_unk_Rt_11_t2LDA)(tdis_ctx ctx, struct bitslice Rt, struct bitslice addr) { + data(rout(Rt), r(addr)); +} +static INLINE void P(addrmode5_addr_8_VLDRD)(tdis_ctx ctx, struct bitslice addr) { + data(rs(addr, 9, 4)); +} +static INLINE void P(addrmode5_addr_S_4_t2STC2L_OFFSET)(tdis_ctx ctx, struct bitslice addr) { + data(rs(addr, 9, 4)); +} +static INLINE void P(addrmode5_pre_addr_4_t2LDC2L_PRE)(tdis_ctx ctx, struct bitslice addr) { + data(rs(addr, 9, 4)); +} +static INLINE void P(addrmode5_pre_addr_S_4_t2STC2L_PRE)(tdis_ctx ctx, struct bitslice addr) { + data(rs(addr, 9, 4)); +} +static INLINE void P(brtarget_target_B_1_t2Bcc)(tdis_ctx ctx, struct bitslice target) { + return P(branch)(ctx, ctx->pc + 4 + 2 * sext(bs_get(target, ctx->op), 20), /*cond*/ true); +} +static INLINE void P(rGPR_Rt_t2addrmode_imm0_1020s4_addr_unk_Rd_S_1_t2STREX)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt, struct bitslice Rd) { + data(rout(Rd), r(Rt), rs(addr, 8, 4)); +} +static INLINE void P(rGPR_Rt_t2addrmode_imm12_addr_S_2_t2STRBi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(r(Rt), rs(addr, 13, 4)); +} +static INLINE void P(rGPR_Rt_t2addrmode_imm8_pre_addr_S_2_t2STRB_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(r(Rt), rs(addr, 9, 4)); +} +static INLINE void P(rGPR_Rt_t2addrmode_imm8s4_addr_S_1_t2STRDi8)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data_flags(IS_LDRD_STRD, r(Rt), rs(addr, 9, 4)); +} +static INLINE void P(rGPR_Rt_t2addrmode_imm8s4_pre_addr_S_1_t2STRD_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data_flags(IS_LDRD_STRD, r(Rt), rs(addr, 9, 4)); +} +static INLINE void P(rGPR_Rt_t2addrmode_negimm8_addr_S_2_t2STRBi8)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(r(Rt), rs(addr, 9, 4)); +} +static INLINE void P(rGPR_Rt_t2addrmode_so_reg_addr_S_2_t2STRBs)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rs(addr, 6, 4), rs(Rt, 2, 4), r(Rt)); +} +static INLINE void P(rGPR_Rt_addr_offset_none_Rn_t2am_imm8_offset_offset_S_2_t2STRB_POST)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice Rt, struct bitslice Rn) { + data(r(Rt), r(Rn)); +} +static INLINE void P(t2addrmode_imm0_1020s4_addr_unk_Rt_1_t2LDREX)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rout(Rt), rs(addr, 8, 4)); +} +static INLINE void P(t2addrmode_imm12_addr_unk_Rt_5_t2LDRBi12)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rout(Rt), rs(addr, 13, 4)); +} +static INLINE void P(t2addrmode_imm8_addr_unk_Rt_S_3_t2STRBT)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(r(Rt), rs(addr, 9, 4)); +} +static INLINE void P(t2addrmode_imm8_pre_addr_unk_Rt_5_t2LDRB_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rout(Rt), rs(addr, 9, 4)); +} +static INLINE void P(addr_offset_none_Rn_t2am_imm8_offset_offset_unk_Rt_5_t2LDRB_POST)(tdis_ctx ctx, UNUSED struct bitslice offset, struct bitslice Rt, struct bitslice Rn) { + data(rout(Rt), r(Rn)); +} +static INLINE void P(t2addrmode_imm8s4_addr_unk_Rt_1_t2LDRDi8)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data_flags(IS_LDRD_STRD, rout(Rt), rs(addr, 9, 4)); +} +static INLINE void P(t2addrmode_imm8s4_pre_addr_unk_Rt_1_t2LDRD_PRE)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data_flags(IS_LDRD_STRD, rout(Rt), rs(addr, 9, 4)); +} +static INLINE void P(t2addrmode_negimm8_addr_unk_Rt_5_t2LDRBi8)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rout(Rt), rs(addr, 9, 4)); +} +static INLINE void P(t2addrmode_posimm8_addr_unk_Rt_5_t2LDRBT)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rout(Rt), rs(addr, 9, 4)); +} +static INLINE void P(t2addrmode_so_reg_addr_unk_Rt_5_t2LDRBs)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + data(rout(Rt), rs(addr, 6, 4), rs(addr, 2, 4)); +} +static INLINE void P(t2adrlabel_addr_unk_Rd_1_t2ADR)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rd) { + return P(pcrel)(ctx, ((ctx->pc + 4) & ~2) + (bs_get(addr, ctx->op) & ((1 << 12) - 1)), bs_get(Rd, ctx->op), PLM_ADR); +} +static INLINE void P(t2ldrlabel_addr_unk_Rt_5_t2LDRBpci)(tdis_ctx ctx, struct bitslice addr, struct bitslice Rt) { + return P(pcrel)(ctx, ((ctx->pc + 4) & ~2) + (bs_get(addr, ctx->op) & ((1 << 12) - 1)), bs_get(Rt, ctx->op), get_thumb2_load_mode(ctx->op)); +} +static INLINE void P(uncondbrtarget_target_B_1_t2B)(tdis_ctx ctx, struct bitslice target) { + bool cond = ctx->arch.thumb_it_length > 0; + return P(branch)(ctx, ctx->pc + 4 + 2 * sext(bs_get(target, ctx->op), 24), cond); +} +static INLINE void P(unk_Rd_3_t2MOVTi16)(tdis_ctx ctx, struct bitslice Rd) { + data(rout(Rd)); +} +static INLINE void P(unk_Rm_B_2_t2TBB)(tdis_ctx ctx, UNUSED struct bitslice Rm) { + /* Ew. Don't bother for now - this is hard to make show up in the first 8 bytes... */ + return P(bad)(ctx); +} +static INLINE void P(unk_Rt_13_VMOVRRD)(tdis_ctx ctx, UNUSED struct bitslice Rt) { + return P(unidentified)(ctx); +} + +static INLINE void do_it(tdis_ctx ctx) { + uint32_t op = ctx->op; + #include "../generated/generic-dis-thumb2.inc.h" + __builtin_abort(); +} + +static INLINE void P(dis_thumb2)(tdis_ctx ctx) { + ctx->op = *(uint32_t *) ctx->ptr; + ctx->op_size = 4; + if (ctx->arch.thumb_it_length) + ctx->arch.thumb_it_length--; + /* LLVM likes to think about Thumb2 instructions the way the ARM manual + * does - 15..0 15..0 rather than 31..0 as actually laid out in memory... */ + ctx->op = flip16(ctx->op); + do_it(ctx); + TDIS_CTX_SET_NEWOP(ctx, flip16(TDIS_CTX_NEWOP(ctx))); + ctx->op = flip16(ctx->op); +} |