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begin more careful about syncing the stack top

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This commit is contained in:
Alex Shinn 2011-02-19 11:56:58 +00:00
parent 47a0656f5c
commit 810e693a8c
1 changed files with 11 additions and 6 deletions
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17
vm.c
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@ -735,9 +735,9 @@ sexp sexp_vm (sexp ctx, sexp proc) {
fp = sexp_unbox_fixnum(tmp2);
goto make_call;
case SEXP_OP_CALL:
sexp_context_top(ctx) = top;
#if SEXP_USE_CHECK_STACK
if (top+64 >= sexp_stack_length(sexp_context_stack(ctx))) {
sexp_context_top(ctx) = top;
if (sexp_grow_stack(ctx)) {
stack = sexp_stack_data(sexp_context_stack(ctx));
} else {
@ -750,6 +750,7 @@ sexp sexp_vm (sexp ctx, sexp proc) {
i = sexp_unbox_fixnum(_WORD0);
tmp1 = _ARG1;
make_call:
sexp_context_top(ctx) = top;
if (sexp_opcodep(tmp1)) {
/* compile non-inlined opcode applications on the fly */
tmp1 = make_opcode_procedure(ctx, tmp1, i);
@ -968,7 +969,10 @@ sexp sexp_vm (sexp ctx, sexp proc) {
sexp_bytes_set(_ARG1, _ARG2, _ARG3);
else
#if SEXP_USE_UTF8_STRINGS
sexp_string_utf8_set(ctx, _ARG1, _ARG2, _ARG3);
{
sexp_context_top(ctx) = top;
sexp_string_utf8_set(ctx, _ARG1, _ARG2, _ARG3);
}
#else
sexp_string_set(_ARG1, _ARG2, _ARG3);
#endif
@ -1366,6 +1370,7 @@ sexp sexp_vm (sexp ctx, sexp proc) {
#if SEXP_USE_BIGNUMS
} else if ((sexp_flonum_value(_ARG1) > SEXP_MAX_FIXNUM)
|| sexp_flonum_value(_ARG1) < SEXP_MIN_FIXNUM) {
sexp_context_top(ctx) = top;
_ARG1 = sexp_double_to_bignum(ctx, sexp_flonum_value(_ARG1));
#endif
} else {
@ -1396,11 +1401,11 @@ sexp sexp_vm (sexp ctx, sexp proc) {
_ARG1 = sexp_make_character(tolower(sexp_unbox_character(_ARG1)));
break;
case SEXP_OP_WRITE_CHAR:
sexp_context_top(ctx) = top;
if (! sexp_charp(_ARG1))
sexp_raise("write-char: not a character", sexp_list1(ctx, _ARG1));
if (! sexp_oportp(_ARG2))
sexp_raise("write-char: not an output-port", sexp_list1(ctx, _ARG2));
sexp_context_top(ctx) = top;
#if SEXP_USE_UTF8_STRINGS
if (sexp_unbox_character(_ARG1) >= 0x80)
sexp_write_utf8_char(ctx, sexp_unbox_character(_ARG1), _ARG2);
@ -1411,16 +1416,16 @@ sexp sexp_vm (sexp ctx, sexp proc) {
top--;
break;
case SEXP_OP_NEWLINE:
sexp_context_top(ctx) = top;
if (! sexp_oportp(_ARG1))
sexp_raise("newline: not an output-port", sexp_list1(ctx, _ARG1));
sexp_context_top(ctx) = top;
sexp_newline(ctx, _ARG1);
_ARG1 = SEXP_VOID;
break;
case SEXP_OP_READ_CHAR:
sexp_context_top(ctx) = top;
if (! sexp_iportp(_ARG1))
sexp_raise("read-char: not an input-port", sexp_list1(ctx, _ARG1));
sexp_context_top(ctx) = top;
i = sexp_read_char(ctx, _ARG1);
#if SEXP_USE_UTF8_STRINGS
if (i >= 0x80)
@ -1441,9 +1446,9 @@ sexp sexp_vm (sexp ctx, sexp proc) {
_ARG1 = sexp_make_character(i);
break;
case SEXP_OP_PEEK_CHAR:
sexp_context_top(ctx) = top;
if (! sexp_iportp(_ARG1))
sexp_raise("peek-char: not an input-port", sexp_list1(ctx, _ARG1));
sexp_context_top(ctx) = top;
i = sexp_read_char(ctx, _ARG1);
sexp_push_char(ctx, i, _ARG1);
if (i == EOF) {