Fcalva/chibi-scheme
1
0
Fork 0
mirror of https://github.com/ashinn/chibi-scheme.git synced 2025-05-18 21:29:19 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

When directly incrementing or aligning bytecode pos during code generation,

Browse source 
ensure there is enough space just as when emitting.
This commit is contained in:
Alex Shinn 2015-05-12 23:03:48 +09:00
parent d6b66a32fd
commit 607d70c6a0
4 changed files with 15 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
eval.c
View file

@ -303,7 +303,7 @@ void sexp_shrink_bcode (sexp ctx, sexp_uint_t i) {
}
}
void sexp_expand_bcode (sexp ctx, sexp_uint_t size) {
void sexp_expand_bcode (sexp ctx, sexp_sint_t size) {
sexp tmp;
if (sexp_bytecode_length(sexp_context_bc(ctx))
< (sexp_unbox_fixnum(sexp_context_pos(ctx)))+size) {

2
include/chibi/eval.h
View file

@ -76,7 +76,7 @@ SEXP_API void sexp_bless_bytecode (sexp ctx, sexp bc);
#endif
SEXP_API sexp sexp_complete_bytecode (sexp ctx);
SEXP_API void sexp_shrink_bcode (sexp ctx, sexp_uint_t i);
SEXP_API void sexp_expand_bcode (sexp ctx, sexp_uint_t size);
SEXP_API void sexp_expand_bcode (sexp ctx, sexp_sint_t size);
SEXP_API void sexp_stack_trace (sexp ctx, sexp out);
SEXP_API sexp sexp_free_vars (sexp context, sexp x, sexp fv);
SEXP_API int sexp_param_index (sexp ctx, sexp lambda, sexp name);

2
include/chibi/sexp.h
View file

@ -1119,7 +1119,7 @@ SEXP_API sexp sexp_make_unsigned_integer(sexp ctx, sexp_luint_t x);
#define sexp_context_exception(x) (sexp_vector_ref(sexp_context_specific(x), SEXP_SIX))
#if SEXP_USE_ALIGNED_BYTECODE
#define sexp_context_align_pos(ctx) sexp_context_pos(ctx) = (sexp)sexp_make_fixnum(sexp_word_align((sexp_uint_t)sexp_unbox_fixnum(sexp_context_pos(ctx))))
SEXP_API void sexp_context_align_pos(sexp ctx);
#else
#define sexp_context_align_pos(ctx)
#endif

12
vm.c
View file

@ -82,7 +82,19 @@ sexp sexp_stack_trace_op (sexp ctx, sexp self, sexp_sint_t n, sexp out) {
/************************* code generation ****************************/
#if SEXP_USE_ALIGNED_BYTECODE
void sexp_context_align_pos(sexp ctx) {
sexp_uint_t pos = sexp_unbox_fixnum(sexp_context_pos(ctx));
sexp_uint_t new_pos = sexp_word_align(pos);
if (new_pos > pos) {
sexp_expand_bcode(ctx, (sexp_sint_t)new_pos - pos);
sexp_context_pos(ctx) = sexp_make_fixnum(new_pos);
}
}
#endif
static void sexp_inc_context_pos(sexp ctx, sexp_sint_t off) {
sexp_expand_bcode(ctx, off);
sexp_context_pos(ctx) = sexp_fx_add(sexp_context_pos(ctx), sexp_make_fixnum(off));
}