aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--lib/compiler/src/beam_validator.erl99
-rw-r--r--lib/compiler/test/beam_validator_SUITE.erl19
-rw-r--r--lib/compiler/test/beam_validator_SUITE_data/bin_aligned.S47
-rw-r--r--lib/compiler/test/beam_validator_SUITE_data/unsafe_catch.S8
4 files changed, 27 insertions, 146 deletions
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index ce6cd60ab1..780826b126 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -28,7 +28,7 @@
-include("beam_disasm.hrl").
--import(lists, [reverse/1,foldl/3,foreach/2,member/2,dropwhile/2]).
+-import(lists, [reverse/1,foldl/3,foreach/2,dropwhile/2]).
-define(MAXREG, 1024).
@@ -153,7 +153,6 @@ validate_0(Module, [{function,Name,Ar,Entry,Code}|Fs], Ft) ->
hf=0, %Available heap size for floats.
fls=undefined, %Floating point state.
ct=[], %List of hot catch/try labels
- bits=undefined, %Number of bits in bit syntax binary.
setelem=false %Previous instruction was setelement/3.
}).
@@ -696,8 +695,7 @@ valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
end,
Vst1 = heap_alloc(Heap, Vst0),
Vst2 = branch_state(Fail, Vst1),
- Vst3 = prune_x_regs(Live, Vst2),
- Vst = bs_zero_bits(Vst3),
+ Vst = prune_x_regs(Live, Vst2),
set_type_reg(binary, Dst, Vst);
valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
verify_live(Live, Vst0),
@@ -709,8 +707,7 @@ valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) ->
end,
Vst1 = heap_alloc(Heap, Vst0),
Vst2 = branch_state(Fail, Vst1),
- Vst3 = prune_x_regs(Live, Vst2),
- Vst = bs_zero_bits(Vst3),
+ Vst = prune_x_regs(Live, Vst2),
set_type_reg(binary, Dst, Vst);
valfun_4({bs_append,{f,Fail},Bits,Heap,Live,_Unit,Bin,_Flags,Dst}, Vst0) ->
verify_live(Live, Vst0),
@@ -718,43 +715,35 @@ valfun_4({bs_append,{f,Fail},Bits,Heap,Live,_Unit,Bin,_Flags,Dst}, Vst0) ->
assert_term(Bin, Vst0),
Vst1 = heap_alloc(Heap, Vst0),
Vst2 = branch_state(Fail, Vst1),
- Vst3 = prune_x_regs(Live, Vst2),
- Vst = bs_zero_bits(Vst3),
+ Vst = prune_x_regs(Live, Vst2),
set_type_reg(binary, Dst, Vst);
valfun_4({bs_private_append,{f,Fail},Bits,_Unit,Bin,_Flags,Dst}, Vst0) ->
assert_term(Bits, Vst0),
assert_term(Bin, Vst0),
- Vst1 = branch_state(Fail, Vst0),
- Vst = bs_zero_bits(Vst1),
+ Vst = branch_state(Fail, Vst0),
set_type_reg(binary, Dst, Vst);
valfun_4({bs_put_string,Sz,_}, Vst) when is_integer(Sz) ->
Vst;
-valfun_4({bs_put_binary,{f,Fail},Sz,_,_,Src}=I, Vst0) ->
- assert_term(Sz, Vst0),
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_binary,{f,Fail},Sz,_,_,Src}, Vst) ->
+ assert_term(Sz, Vst),
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_float,{f,Fail},Sz,_,_,Src}=I, Vst0) ->
- assert_term(Sz, Vst0),
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_float,{f,Fail},Sz,_,_,Src}, Vst) ->
+ assert_term(Sz, Vst),
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_integer,{f,Fail},Sz,_,_,Src}=I, Vst0) ->
- assert_term(Sz, Vst0),
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_integer,{f,Fail},Sz,_,_,Src}, Vst) ->
+ assert_term(Sz, Vst),
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_utf8,{f,Fail},_,Src}=I, Vst0) ->
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_utf8,{f,Fail},_,Src}, Vst) ->
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_utf16,{f,Fail},_,Src}=I, Vst0) ->
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_utf16,{f,Fail},_,Src}, Vst) ->
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
-valfun_4({bs_put_utf32,{f,Fail},_,Src}=I, Vst0) ->
- assert_term(Src, Vst0),
- Vst = bs_align_check(I, Vst0),
+valfun_4({bs_put_utf32,{f,Fail},_,Src}, Vst) ->
+ assert_term(Src, Vst),
branch_state(Fail, Vst);
%% Map instructions.
valfun_4({put_map_assoc,{f,Fail},Src,Dst,Live,{list,List}}, Vst) ->
@@ -1067,55 +1056,7 @@ bsm_restore(Reg, SavePoint, Vst) ->
end;
_ -> error({illegal_restore,SavePoint,range})
end.
-
-
-%%%
-%%% Validation of alignment in the bit syntax. (Currently, construction only.)
-%%%
-%%% We make sure that the aligned flag is only set when we can be sure of the
-%%% aligment.
-%%%
-bs_zero_bits(#vst{current=St}=Vst) ->
- Vst#vst{current=St#st{bits=0}}.
-
-bs_align_check({bs_put_utf8,_,Flags,_}, #vst{current=#st{}=St}=Vst) ->
- bs_verify_flags(Flags, St),
- Vst;
-bs_align_check({bs_put_utf16,_,Flags,_}, #vst{current=#st{}=St}=Vst) ->
- bs_verify_flags(Flags, St),
- Vst;
-bs_align_check({bs_put_utf32,_,Flags,_}, #vst{current=#st{}=St}=Vst) ->
- bs_verify_flags(Flags, St),
- Vst;
-bs_align_check({_,_,Sz,U,Flags,_}, #vst{current=#st{bits=Bits}=St}=Vst) ->
- bs_verify_flags(Flags, St),
- bs_update_bits(Bits, Sz, U, St, Vst).
-
-bs_update_bits(undefined, _, _, _, Vst) -> Vst;
-bs_update_bits(Bits0, {integer,Sz}, U, St, Vst) ->
- Bits = Bits0 + U*Sz,
- Vst#vst{current=St#st{bits=Bits}};
-bs_update_bits(_, {atom,all}, _, _, Vst) ->
- %% A binary will not change the alignment.
- Vst;
-bs_update_bits(_, _, U, _, Vst) when U rem 8 =:= 0 ->
- %% Units of 8, 16, and so on will not change the aligment.
- Vst;
-bs_update_bits(_, _, _, St, Vst) ->
- %% We can no longer be sure about aligment.
- Vst#vst{current=St#st{bits=undefined}}.
-
-bs_verify_flags({field_flags,Fl}, #st{bits=Bits}) ->
- case bs_is_aligned(Fl) of
- false -> ok;
- true when is_integer(Bits), Bits rem 8 =:= 0 -> ok;
- true -> error({aligned_flag_set,{bits,Bits}})
- end.
-
-bs_is_aligned(Fl) when is_integer(Fl) -> Fl band 1 =:= 1;
-bs_is_aligned(Fl) when is_list(Fl) -> member(aligned, Fl).
-
%%%
%%% Keeping track of types.
%%%
diff --git a/lib/compiler/test/beam_validator_SUITE.erl b/lib/compiler/test/beam_validator_SUITE.erl
index 6779a2cfec..e64dd6b9c3 100644
--- a/lib/compiler/test/beam_validator_SUITE.erl
+++ b/lib/compiler/test/beam_validator_SUITE.erl
@@ -28,7 +28,7 @@
overwrite_catchtag/1,overwrite_trytag/1,accessing_tags/1,bad_catch_try/1,
cons_guard/1,
freg_range/1,freg_uninit/1,freg_state/1,
- bad_bin_match/1,bin_aligned/1,bad_dsetel/1,
+ bad_bin_match/1,bad_dsetel/1,
state_after_fault_in_catch/1,no_exception_in_catch/1,
undef_label/1,illegal_instruction/1,failing_gc_guard_bif/1,
map_field_lists/1]).
@@ -57,7 +57,7 @@ groups() ->
unsafe_catch,dead_code,
overwrite_catchtag,overwrite_trytag,accessing_tags,
bad_catch_try,cons_guard,freg_range,freg_uninit,
- freg_state,bad_bin_match,bin_aligned,bad_dsetel,
+ freg_state,bad_bin_match,bad_dsetel,
state_after_fault_in_catch,no_exception_in_catch,
undef_label,illegal_instruction,failing_gc_guard_bif,
map_field_lists]}].
@@ -178,7 +178,7 @@ unsafe_catch(Config) when is_list(Config) ->
?line
[{{t,small,2},
{{bs_put_integer,{f,0},{integer,16},1,
- {field_flags,[aligned,unsigned,big]},{y,0}},
+ {field_flags,[unsigned,big]},{y,0}},
20,
{unassigned,{y,0}}}}] = Errors,
ok.
@@ -299,19 +299,6 @@ bad_bin_match(Config) when is_list(Config) ->
do_val(bad_bin_match, Config),
ok.
-bin_aligned(Config) when is_list(Config) ->
- Errors = do_val(bin_aligned, Config),
- ?line
- [{{t,decode,1},
- {{bs_put_integer,{f,0},
- {integer,5},
- 1,
- {field_flags,[unsigned,big,aligned]},
- {integer,0}},
- 10,
- {aligned_flag_set,{bits,3}}}}] = Errors,
- ok.
-
bad_dsetel(Config) when is_list(Config) ->
Errors = do_val(bad_dsetel, Config),
?line
diff --git a/lib/compiler/test/beam_validator_SUITE_data/bin_aligned.S b/lib/compiler/test/beam_validator_SUITE_data/bin_aligned.S
deleted file mode 100644
index a59f7ccc03..0000000000
--- a/lib/compiler/test/beam_validator_SUITE_data/bin_aligned.S
+++ /dev/null
@@ -1,47 +0,0 @@
-{module, bin_aligned}. %% version = 0
-
-{exports, [{decode,1},{module_info,0},{module_info,1}]}.
-
-{attributes, []}.
-
-{labels, 7}.
-
-
-{function, decode, 1, 2}.
- {label,1}.
- {func_info,{atom,t},{atom,decode},1}.
- {label,2}.
- {move,{integer,1},{x,1}}.
- {bif,size,{f,0},[{x,0}],{x,2}}.
- {bs_add,{f,0},[{x,1},{x,2},1],{x,1}}.
- {bs_init2,{f,0},{x,1},0,1,{field_flags,[]},{x,1}}.
- {bs_put_integer,{f,0},
- {integer,3},
- 1,
- {field_flags,[aligned,unsigned,big]},
- {integer,0}}.
- {bs_put_binary,{f,0},{atom,all},8,{field_flags,[unsigned,big]},{x,0}}.
- {bs_put_integer,{f,0},
- {integer,5},
- 1,
- {field_flags,[unsigned,big,aligned]},
- {integer,0}}.
- {move,{x,1},{x,0}}.
- return.
-
-
-{function, module_info, 0, 4}.
- {label,3}.
- {func_info,{atom,t},{atom,module_info},0}.
- {label,4}.
- {move,{atom,t},{x,0}}.
- {call_ext_only,1,{extfunc,erlang,get_module_info,1}}.
-
-
-{function, module_info, 1, 6}.
- {label,5}.
- {func_info,{atom,t},{atom,module_info},1}.
- {label,6}.
- {move,{x,0},{x,1}}.
- {move,{atom,t},{x,0}}.
- {call_ext_only,2,{extfunc,erlang,get_module_info,2}}.
diff --git a/lib/compiler/test/beam_validator_SUITE_data/unsafe_catch.S b/lib/compiler/test/beam_validator_SUITE_data/unsafe_catch.S
index 500ac11377..f7d3f805b3 100644
--- a/lib/compiler/test/beam_validator_SUITE_data/unsafe_catch.S
+++ b/lib/compiler/test/beam_validator_SUITE_data/unsafe_catch.S
@@ -17,7 +17,7 @@
{bs_put_integer,{f,0},
{integer,8},
1,
- {field_flags,[aligned,unsigned,big]},
+ {field_flags,[unsigned,big]},
{x,0}}.
{move,{x,1},{y,0}}.
{move,{x,2},{x,0}}.
@@ -34,7 +34,7 @@
{bs_put_integer,{f,0},
{integer,16},
1,
- {field_flags,[aligned,unsigned,big]},
+ {field_flags,[unsigned,big]},
{y,0}}.
{move,{x,0},{y,0}}.
{move,{x,1},{x,0}}.
@@ -55,12 +55,12 @@
{bs_put_binary,{f,0},
{atom,all},
8,
- {field_flags,[aligned,unsigned,big]},
+ {field_flags,[unsigned,big]},
{y,0}}.
{bs_put_binary,{f,0},
{atom,all},
8,
- {field_flags,[aligned,unsigned,big]},
+ {field_flags,[unsigned,big]},
{x,0}}.
{move,{x,1},{x,0}}.
{deallocate,2}.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 14:29:34 +0000