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| author | Ben Smith <binji@chromium.org> | 2016-04-25 13:21:58 -0700 |
|---|---|---|
| committer | Ben Smith <binji@chromium.org> | 2016-04-28 23:46:14 -0700 |
| commit | ee599aecbbc6d1d61bfb7485ba40c404937c4727 (patch) | |
| tree | 2cdcd5caf01bd14058d4b9ce819c58fa26cefe06 /src/wasm-binary-reader-interpreter.c | |
| parent | ec184a350f52f96ea11130822967d03a9b16c68a (diff) | |
| download | wabt-ee599aecbbc6d1d61bfb7485ba40c404937c4727.tar.gz wabt-ee599aecbbc6d1d61bfb7485ba40c404937c4727.tar.bz2 wabt-ee599aecbbc6d1d61bfb7485ba40c404937c4727.zip | |
support br_table with value
Diffstat (limited to 'src/wasm-binary-reader-interpreter.c')
| -rw-r--r-- | src/wasm-binary-reader-interpreter.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/wasm-binary-reader-interpreter.c b/src/wasm-binary-reader-interpreter.c index c6f0d3be..8916ad70 100644 --- a/src/wasm-binary-reader-interpreter.c +++ b/src/wasm-binary-reader-interpreter.c @@ -750,6 +750,7 @@ static WasmResult on_br_table_expr(uint32_t num_targets, void* user_data) { WasmContext* ctx = user_data; WasmType key = pop_expr(ctx); + WasmType value = pop_expr(ctx); CHECK_RESULT(check_type(ctx, WASM_TYPE_I32, key, "br_table")); uint32_t i; @@ -757,8 +758,7 @@ static WasmResult on_br_table_expr(uint32_t num_targets, uint32_t depth = i != num_targets ? target_depths[i] : default_target_depth; uint32_t translated_depth = translate_typecheck_depth(ctx, depth); WasmTypecheckLabel* label = get_typecheck_label(ctx, translated_depth); - CHECK_RESULT(unify_and_check_type(ctx, &label->type, WASM_TYPE_VOID, - "br_table")); + CHECK_RESULT(unify_and_check_type(ctx, &label->type, value, "br_table")); } return push_expr(ctx, WASM_TYPE_ANY, WASM_OPCODE_BR_TABLE); @@ -1121,9 +1121,12 @@ static WasmResult emit_br(WasmContext* ctx, uint32_t depth) { static WasmResult emit_br_table_offset(WasmContext* ctx, uint32_t depth) { WasmEmitLabel* label = get_emit_label(ctx, depth); - uint32_t discard_count = ctx->value_stack_size - label->value_stack_size; + uint8_t keep_count = label->has_value ? 1 : 0; + uint32_t discard_count = + (ctx->value_stack_size - label->value_stack_size) - keep_count; CHECK_RESULT(emit_br_offset(ctx, depth, label->offset)); CHECK_RESULT(emit_i32(ctx, discard_count)); + CHECK_RESULT(emit_i8(ctx, keep_count)); return WASM_OK; } @@ -1349,8 +1352,7 @@ static WasmResult on_emit_br_table_expr(uint32_t num_targets, /* not necessary for the interpreter, but it makes it easier to disassemble. * This opcode specifies how many bytes of data follow. */ CHECK_RESULT(emit_opcode(ctx, WASM_OPCODE_DATA)); - CHECK_RESULT(emit_i32(ctx, (num_targets + 1) * sizeof(uint32_t) * 2)); - + CHECK_RESULT(emit_i32(ctx, (num_targets + 1) * WASM_TABLE_ENTRY_SIZE)); CHECK_RESULT(emit_i32_at(ctx, fixup_table_offset, get_istream_offset(ctx))); /* write the branch table as (offset, discard count) pairs */ |