diff options
Diffstat (limited to '')
| -rw-r--r-- | lib/dis-arm.inc.h | 42 |
1 files changed, 34 insertions, 8 deletions
diff --git a/lib/dis-arm.inc.h b/lib/dis-arm.inc.h index 6ed4bc6..88fefb8 100644 --- a/lib/dis-arm.inc.h +++ b/lib/dis-arm.inc.h @@ -1,5 +1,37 @@ #include "dis.h" +/* + ARM + 65 24-20 + LDRSB: 10 xx1x1 + LDRH: 01 xx1x1 + LDRSH: 11 xx1x1 + LDRD: 10 xx1x0 + + LDRB: ii 1u101 + LDR: ii 1u001 + + Thumb (such logical) + LDRB: 11111 00 0 U 00 1 1111 + LDRSB: 11111 00 1 U 00 1 1111 + LDRH: 11111 00 0 U 01 1 1111 + LDRSH: 11111 00 1 U 01 1 1111 + LDR: 11111 00 0 U 10 1 1111 +*/ + +static inline enum pcrel_load_mode get_load_mode(unsigned op) { + if ((op & 0x7000090) == 0x90) { + return ((op >> 22) & 1) ? PLM_U8 : PLM_U32; + } else { + switch ((op >> 4) & 3) { + default: __builtin_abort(); + case 1: return PLM_U16; + case 2: return (op & (1 << 20)) ? PLM_S8 : PLM_U128; + case 3: return PLM_S16; + } + } +} + static INLINE tdis_ret P(GPRPairOp_Rt_addr_offset_none_addr_unk_Rd_S_2_STLEXD)(tdis_ctx ctx, struct bitslice Rt, struct bitslice Rd, struct bitslice addr) { data(r(Rt), r(Rd), r(addr)); } @@ -117,7 +149,7 @@ static INLINE tdis_ret P(addrmode_imm12_pre_addr_unk_Rt_2_LDRB_PRE_IMM)(tdis_ctx data(rs(addr, 13, 4), rout(Rt)); } static INLINE tdis_ret P(adrlabel_label_unk_Rd_1_ADR)(tdis_ctx ctx, struct bitslice label, struct bitslice Rd) { - return P(pcrel)(ctx, ctx->pc + 8 + bs_get(label, ctx->op), bs_get(Rd, ctx->op), false); + return P(pcrel)(ctx, ctx->pc + 8 + bs_get(label, ctx->op), bs_get(Rd, ctx->op), PLM_ADR); } 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)); @@ -156,10 +188,4 @@ static INLINE tdis_ret P(GPR_Rt_addr_offset_none_addr_postidx_reg_Rm_S_1_STRHTr) data(r(addr), r(Rt), r(Rm)); } -static tdis_ret P(dis_arm)(tdis_ctx ctx) { - unsigned op = ctx->op; - #include "../generated/transform-dis-arm.inc.h" - /* clang doesn't realize that this is unreachable * and generates code like - * "and ecx, 0x1f; cmp ecx, 0x1f; ja abort". Yeah, nice job there. */ - __builtin_abort(); -} +#define GENERATED_HEADER "../generated/transform-dis-arm.inc.h" |