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fixing bytecode offsets in images, allowing the image heap size and init heap size to differ

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This commit is contained in:
Alex Shinn 2011-10-31 00:10:56 +09:00
parent 79e7f0b90d
commit 1e01258724
4 changed files with 157 additions and 104 deletions
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37
gc.c
View file

@ -384,8 +384,8 @@ sexp sexp_gc (sexp ctx, size_t *sum_freed) {
sexp_conservative_mark(ctx);
sexp_reset_weak_references(ctx);
res = sexp_sweep(ctx, sum_freed);
sexp_debug_printf("%p (freed: %lu max_freed: %lu)", ctx, *sum_freed,
sexp_unbox_fixnum(res));
sexp_debug_printf("%p (freed: %lu max_freed: %lu)", ctx,
(sum_freed ? *sum_freed : 0), sexp_unbox_fixnum(res));
return res;
}
@ -519,10 +519,34 @@ void sexp_offset_heap_pointers (sexp_heap heap, sexp_heap from_heap, sexp* types
/* adjust context heaps, don't copy saved sexp_gc_vars */
if (sexp_contextp(p)) {
sexp_context_ip(p) += off;
sexp_context_last_fp(p) += off;
sexp_stack_top(sexp_context_stack(p)) = 0;
sexp_context_saves(p) = NULL;
/* if (sexp_context_heap(p) - off != from_heap) */
/* fprintf(stderr, "unexpected heap: %p\n", sexp_context_heap(p)); */
sexp_context_heap(p) = heap;
} else if (sexp_bytecodep(p)) {
for (i=0; i<sexp_bytecode_length(p); ) {
switch (sexp_bytecode_data(p)[i++]) {
case SEXP_OP_STACK_REF: case SEXP_OP_LOCAL_REF:
case SEXP_OP_LOCAL_SET: case SEXP_OP_CLOSURE_REF:
case SEXP_OP_JUMP: case SEXP_OP_JUMP_UNLESS:
case SEXP_OP_TYPEP: case SEXP_OP_RESERVE:
case SEXP_OP_FCALL0: case SEXP_OP_FCALL1:
case SEXP_OP_FCALL2: case SEXP_OP_FCALL3:
case SEXP_OP_FCALL4: case SEXP_OP_CALL:
case SEXP_OP_GLOBAL_REF: case SEXP_OP_GLOBAL_KNOWN_REF:
case SEXP_OP_TAIL_CALL: case SEXP_OP_PARAMETER_REF:
case SEXP_OP_PUSH:
v = (sexp*)(&(sexp_bytecode_data(p)[i]));
if (v[0] && sexp_pointerp(v[0])) v[0] = (sexp) ((char*)v[0] + off);
i += sizeof(sexp); break;
case SEXP_OP_SLOT_REF: case SEXP_OP_SLOT_SET: case SEXP_OP_MAKE:
i += 2*sizeof(sexp); break;
case SEXP_OP_MAKE_PROCEDURE:
v = (sexp*)(&(sexp_bytecode_data(p)[i]));
if (v[2] && sexp_pointerp(v[2])) v[2] = (sexp) ((char*)v[2] + off);
i += 3*sizeof(sexp); break;
}
}
} else if (sexp_portp(p) && sexp_port_stream(p)) {
sexp_port_stream(p) = 0;
sexp_port_openp(p) = 0;
@ -554,6 +578,11 @@ void sexp_offset_heap_pointers (sexp_heap heap, sexp_heap from_heap, sexp* types
} else {
sexp_opcode_func(p) = dlsym(SEXP_RTLD_DEFAULT, sexp_string_data(name));
}
} else if (sexp_typep(p)) {
if (sexp_type_finalize(p))
sexp_type_finalize(p) = sexp_type_tag(p) == SEXP_DL ? sexp_finalize_dl : SEXP_FINALIZE_PORT;
if (sexp_type_print(p))
sexp_type_print(p) = sexp_write_simple_object;
}
t = types[sexp_pointer_tag(p)];
p = (sexp) (((char*)p)+sexp_heap_align(sexp_type_size_of_object(t, p)));

87
include/chibi/eval.h
View file

@ -46,93 +46,6 @@ enum sexp_opcode_classes {
SEXP_OPC_NUM_OP_CLASSES
};
enum sexp_opcode_names {
SEXP_OP_NOOP,
SEXP_OP_RAISE,
SEXP_OP_RESUMECC,
SEXP_OP_CALLCC,
SEXP_OP_APPLY1,
SEXP_OP_TAIL_CALL,
SEXP_OP_CALL,
SEXP_OP_FCALL0,
SEXP_OP_FCALL1,
SEXP_OP_FCALL2,
SEXP_OP_FCALL3,
SEXP_OP_FCALL4,
SEXP_OP_FCALLN,
SEXP_OP_JUMP_UNLESS,
SEXP_OP_JUMP,
SEXP_OP_PUSH,
SEXP_OP_RESERVE,
SEXP_OP_DROP,
SEXP_OP_GLOBAL_REF,
SEXP_OP_GLOBAL_KNOWN_REF,
SEXP_OP_PARAMETER_REF,
SEXP_OP_STACK_REF,
SEXP_OP_LOCAL_REF,
SEXP_OP_LOCAL_SET,
SEXP_OP_CLOSURE_REF,
SEXP_OP_CLOSURE_VARS,
SEXP_OP_VECTOR_REF,
SEXP_OP_VECTOR_SET,
SEXP_OP_VECTOR_LENGTH,
SEXP_OP_BYTES_REF,
SEXP_OP_BYTES_SET,
SEXP_OP_BYTES_LENGTH,
SEXP_OP_STRING_REF,
SEXP_OP_STRING_SET,
SEXP_OP_STRING_LENGTH,
SEXP_OP_STRING_CURSOR_NEXT,
SEXP_OP_STRING_CURSOR_PREV,
SEXP_OP_STRING_SIZE,
SEXP_OP_MAKE_PROCEDURE,
SEXP_OP_MAKE_VECTOR,
SEXP_OP_MAKE_EXCEPTION,
SEXP_OP_AND,
SEXP_OP_NULLP,
SEXP_OP_FIXNUMP,
SEXP_OP_SYMBOLP,
SEXP_OP_CHARP,
SEXP_OP_EOFP,
SEXP_OP_TYPEP,
SEXP_OP_MAKE,
SEXP_OP_SLOT_REF,
SEXP_OP_SLOT_SET,
SEXP_OP_ISA,
SEXP_OP_SLOTN_REF,
SEXP_OP_SLOTN_SET,
SEXP_OP_CAR,
SEXP_OP_CDR,
SEXP_OP_SET_CAR,
SEXP_OP_SET_CDR,
SEXP_OP_CONS,
SEXP_OP_ADD,
SEXP_OP_SUB,
SEXP_OP_MUL,
SEXP_OP_DIV,
SEXP_OP_QUOTIENT,
SEXP_OP_REMAINDER,
SEXP_OP_LT,
SEXP_OP_LE,
SEXP_OP_EQN,
SEXP_OP_EQ,
SEXP_OP_FIX2FLO,
SEXP_OP_FLO2FIX,
SEXP_OP_CHAR2INT,
SEXP_OP_INT2CHAR,
SEXP_OP_CHAR_UPCASE,
SEXP_OP_CHAR_DOWNCASE,
SEXP_OP_WRITE_CHAR,
SEXP_OP_NEWLINE,
SEXP_OP_READ_CHAR,
SEXP_OP_PEEK_CHAR,
SEXP_OP_YIELD,
SEXP_OP_FORCE,
SEXP_OP_RET,
SEXP_OP_DONE,
SEXP_OP_NUM_OPCODES
};
/**************************** prototypes ******************************/
SEXP_API void sexp_scheme_init (void);

87
include/chibi/sexp.h
View file

@ -1289,6 +1289,93 @@ SEXP_API sexp sexp_finalize_c_type (sexp ctx sexp_api_params(self, n), sexp obj)
#define sexp_make_setter(ctx, a, b, c) sexp_make_setter_op(ctx sexp_api_pass(NULL, 3), a, b, c)
#define sexp_lookup_type(ctx, name, id) sexp_lookup_type_op(ctx sexp_api_pass(NULL, 2), name, id)
enum sexp_opcode_names {
SEXP_OP_NOOP,
SEXP_OP_RAISE,
SEXP_OP_RESUMECC,
SEXP_OP_CALLCC,
SEXP_OP_APPLY1,
SEXP_OP_TAIL_CALL,
SEXP_OP_CALL,
SEXP_OP_FCALL0,
SEXP_OP_FCALL1,
SEXP_OP_FCALL2,
SEXP_OP_FCALL3,
SEXP_OP_FCALL4,
SEXP_OP_FCALLN,
SEXP_OP_JUMP_UNLESS,
SEXP_OP_JUMP,
SEXP_OP_PUSH,
SEXP_OP_RESERVE,
SEXP_OP_DROP,
SEXP_OP_GLOBAL_REF,
SEXP_OP_GLOBAL_KNOWN_REF,
SEXP_OP_PARAMETER_REF,
SEXP_OP_STACK_REF,
SEXP_OP_LOCAL_REF,
SEXP_OP_LOCAL_SET,
SEXP_OP_CLOSURE_REF,
SEXP_OP_CLOSURE_VARS,
SEXP_OP_VECTOR_REF,
SEXP_OP_VECTOR_SET,
SEXP_OP_VECTOR_LENGTH,
SEXP_OP_BYTES_REF,
SEXP_OP_BYTES_SET,
SEXP_OP_BYTES_LENGTH,
SEXP_OP_STRING_REF,
SEXP_OP_STRING_SET,
SEXP_OP_STRING_LENGTH,
SEXP_OP_STRING_CURSOR_NEXT,
SEXP_OP_STRING_CURSOR_PREV,
SEXP_OP_STRING_SIZE,
SEXP_OP_MAKE_PROCEDURE,
SEXP_OP_MAKE_VECTOR,
SEXP_OP_MAKE_EXCEPTION,
SEXP_OP_AND,
SEXP_OP_NULLP,
SEXP_OP_FIXNUMP,
SEXP_OP_SYMBOLP,
SEXP_OP_CHARP,
SEXP_OP_EOFP,
SEXP_OP_TYPEP,
SEXP_OP_MAKE,
SEXP_OP_SLOT_REF,
SEXP_OP_SLOT_SET,
SEXP_OP_ISA,
SEXP_OP_SLOTN_REF,
SEXP_OP_SLOTN_SET,
SEXP_OP_CAR,
SEXP_OP_CDR,
SEXP_OP_SET_CAR,
SEXP_OP_SET_CDR,
SEXP_OP_CONS,
SEXP_OP_ADD,
SEXP_OP_SUB,
SEXP_OP_MUL,
SEXP_OP_DIV,
SEXP_OP_QUOTIENT,
SEXP_OP_REMAINDER,
SEXP_OP_LT,
SEXP_OP_LE,
SEXP_OP_EQN,
SEXP_OP_EQ,
SEXP_OP_FIX2FLO,
SEXP_OP_FLO2FIX,
SEXP_OP_CHAR2INT,
SEXP_OP_INT2CHAR,
SEXP_OP_CHAR_UPCASE,
SEXP_OP_CHAR_DOWNCASE,
SEXP_OP_WRITE_CHAR,
SEXP_OP_NEWLINE,
SEXP_OP_READ_CHAR,
SEXP_OP_PEEK_CHAR,
SEXP_OP_YIELD,
SEXP_OP_FORCE,
SEXP_OP_RET,
SEXP_OP_DONE,
SEXP_OP_NUM_OPCODES
};
#ifdef __cplusplus
} /* extern "C" */
#endif

50
main.c
View file

@ -26,23 +26,26 @@
#define SEXP_IMAGE_MAGIC "\x07\x07chibi\n\0"
#define SEXP_IMAGE_MAJOR_VERSION 1
#define SEXP_IMAGE_MINOR_VERSION 0
#define SEXP_IMAGE_MINOR_VERSION 1
typedef struct sexp_image_header_t* sexp_image_header;
struct sexp_image_header_t {
const char magic[8];
short major, minor;
sexp_uint_t size, base, context;
sexp_uint_t size;
sexp_heap base;
sexp context;
};
sexp sexp_gc (sexp ctx, size_t *sum_freed);
void sexp_offset_heap_pointers (sexp_heap heap, sexp_heap from_heap, sexp* types, sexp flags);
static sexp sexp_load_image (const char* file) {
sexp ctx, *globals, *types;
static sexp sexp_load_image (const char* file, sexp_uint_t heap_size, sexp_uint_t heap_max_size) {
sexp ctx, flags, *globals, *types;
int fd;
sexp_sint_t offset;
char* image;
sexp_heap heap;
sexp_free_list q;
struct sexp_image_header_t header;
fd = open(file, O_RDONLY);
if (fd < 0) {
@ -56,19 +59,39 @@ static sexp sexp_load_image (const char* file) {
return NULL;
} else if (header.major != SEXP_IMAGE_MAJOR_VERSION
|| header.major < SEXP_IMAGE_MINOR_VERSION) {
fprintf(stderr, "unsupported image version: %d.%d\n", header.major, header.minor);
fprintf(stderr, "unsupported image version: %d.%d\n",
header.major, header.minor);
return NULL;
}
image = malloc(sexp_heap_pad_size(header.size));
if (read(fd, image, header.size) != header.size) {
if (heap_size < header.size) heap_size = header.size;
heap = (sexp_heap)malloc(sexp_heap_pad_size(heap_size));
if (read(fd, heap, header.size) != header.size) {
fprintf(stderr, "error reading image\n");
return NULL;
}
offset = (sexp_sint_t)(image - (sexp_sint_t)header.base);
offset = (sexp_sint_t)((char*)heap - (sexp_sint_t)header.base);
/* expand the last free chunk if necessary */
if (heap->size < heap_size) {
for (q=(sexp_free_list)((char*)heap->free_list + offset); q->next;
q=(sexp_free_list)((char*)q->next + offset))
;
if ((char*)q + q->size >= (char*)heap->data + heap->size) {
/* last free chunk at end of heap */
q->size += heap_size - heap->size;
} else {
/* last free chunk in the middle of the heap */
q->next = (sexp_free_list)((char*)heap->data + heap->size);
q = (sexp_free_list)((char*)q->next + offset);
q->size = heap_size - heap->size;
q->next = NULL;
}
heap->size += (heap_size - heap->size);
}
ctx = (sexp)(header.context + offset);
globals = sexp_vector_data((sexp)((char*)sexp_context_globals(ctx) + offset));
types = sexp_vector_data((sexp)((char*)(globals[SEXP_G_TYPES]) + offset));
sexp_offset_heap_pointers((sexp_heap)image, (sexp_heap)header.base, types, sexp_fx_add(SEXP_COPY_LOADP, SEXP_COPY_FREEP));
flags = sexp_fx_add(SEXP_COPY_LOADP, SEXP_COPY_FREEP);
sexp_offset_heap_pointers(heap, header.base, types, flags);
close(fd);
return ctx;
}
@ -77,6 +100,7 @@ static int sexp_save_image (sexp ctx, const char* path) {
sexp_heap heap;
FILE* file;
struct sexp_image_header_t header;
sexp_free_list q;
file = fopen(path, "w");
if (!file) {
fprintf(stderr, "couldn't open image file for writing: %s\n", path);
@ -87,8 +111,8 @@ static int sexp_save_image (sexp ctx, const char* path) {
header.major = SEXP_IMAGE_MAJOR_VERSION;
header.minor = SEXP_IMAGE_MINOR_VERSION;
header.size = heap->size;
header.base = (sexp_uint_t)heap;
header.context = (sexp_uint_t)ctx;
header.base = heap;
header.context = ctx;
sexp_gc(ctx, NULL);
if (! (fwrite(&header, sizeof(header), 1, file) == 1
&& fwrite(heap, heap->size, 1, file) == 1)) {
@ -301,7 +325,7 @@ void run_main (int argc, char **argv) {
fprintf(stderr, "-:i <file>: image files must be loaded first\n");
exit_failure();
}
ctx = sexp_load_image(arg);
ctx = sexp_load_image(arg, heap_size, heap_max_size);
if (!ctx) {
fprintf(stderr, "-:i <file>: couldn't open file for reading: %s\n", arg);
exit_failure();