diff options
| -rw-r--r-- | py/emitinlinethumb.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/py/emitinlinethumb.c b/py/emitinlinethumb.c index 669929b0d1..eaa3475b86 100644 --- a/py/emitinlinethumb.c +++ b/py/emitinlinethumb.c @@ -397,6 +397,14 @@ STATIC void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, mp_uint_t n_a } else if (strcmp(op_str, "strh") == 0) { op_code = ASM_THUMB_FORMAT_10_STRH; goto op_format_9_10; + } else if (strcmp(op_str, "ldrex") == 0) { + mp_uint_t r_dest = get_arg_reg(emit, op_str, pn_args[0], 15); + mp_parse_node_t pn_base, pn_offset; + if (get_arg_addr(emit, op_str, pn_args[1], &pn_base, &pn_offset)) { + mp_uint_t r_base = get_arg_reg(emit, op_str, pn_base, 15); + mp_uint_t i8 = get_arg_i(emit, op_str, pn_offset, 0xff) >> 2; + asm_thumb_op32(emit->as, 0xe850 | r_base, 0x0f00 | (r_dest << 12) | i8); + } } else { goto unknown_op; } @@ -422,6 +430,15 @@ STATIC void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, mp_uint_t n_a } else if (strcmp(op_str, "sub") == 0) { op_code = ASM_THUMB_FORMAT_2_SUB; goto op_format_2; + } else if (strcmp(op_str, "strex") == 0) { + mp_uint_t r_dest = get_arg_reg(emit, op_str, pn_args[0], 15); + mp_uint_t r_src = get_arg_reg(emit, op_str, pn_args[1], 15); + mp_parse_node_t pn_base, pn_offset; + if (get_arg_addr(emit, op_str, pn_args[2], &pn_base, &pn_offset)) { + mp_uint_t r_base = get_arg_reg(emit, op_str, pn_base, 15); + mp_uint_t i8 = get_arg_i(emit, op_str, pn_offset, 0xff) >> 2; + asm_thumb_op32(emit->as, 0xe840 | r_base, (r_src << 12) | (r_dest << 8) | i8); + } } else { goto unknown_op; } |