579 lines
14 KiB
C
579 lines
14 KiB
C
|
|
|
|
#include "ikarus.h"
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <assert.h>
|
|
#include <sys/mman.h>
|
|
#include <dlfcn.h>
|
|
|
|
|
|
#ifndef RTLD_DEFAULT
|
|
#define RTLD_DEFAULT 0
|
|
#endif
|
|
|
|
#define USE_ZLIB 0
|
|
|
|
typedef struct {
|
|
#if USE_ZLIB
|
|
gzFile fh;
|
|
#else
|
|
char* membase;
|
|
char* memp;
|
|
char* memq;
|
|
#endif
|
|
ikp* marks;
|
|
int marks_size;
|
|
} fasl_port;
|
|
|
|
static ikp ik_fasl_read(ikpcb* pcb, fasl_port* p);
|
|
|
|
#if USE_ZLIB
|
|
void ik_fasl_load(ikpcb* pcb, char* fasl_file){
|
|
dead!!!
|
|
gzFile fh = gzopen(fasl_file, "rb");
|
|
if(fh == NULL){
|
|
fprintf(stderr, "cannot open %s\n", fasl_file);
|
|
exit(-1);
|
|
}
|
|
fasl_port p;
|
|
p.fh = fh;
|
|
p.marks = NULL;
|
|
p.marks_size = 0;
|
|
ikp v = ik_fasl_read(pcb, &p);
|
|
while(v){
|
|
if(p.marks){
|
|
bzero(p.marks, p.marks_size * sizeof(ikp*));
|
|
}
|
|
ikp val = ik_exec_code(pcb, v);
|
|
val = void_object;
|
|
if(val != void_object){
|
|
ik_print(val);
|
|
}
|
|
v = ik_fasl_read(pcb, &p);
|
|
};
|
|
|
|
fprintf(stderr, "here\n");
|
|
exit(-1);
|
|
}
|
|
#else
|
|
void ik_fasl_load(ikpcb* pcb, char* fasl_file){
|
|
int fd = open(fasl_file, O_RDONLY);
|
|
if(fd == -1){
|
|
fprintf(stderr, "failed to open %s: %s\n", fasl_file, strerror(errno));
|
|
exit(-1);
|
|
}
|
|
int filesize;
|
|
{
|
|
struct stat buf;
|
|
int err = fstat(fd, &buf);
|
|
if(err != 0){
|
|
fprintf(stderr, "failed to stat %s: %s\n", fasl_file, strerror(errno));
|
|
exit(-1);
|
|
}
|
|
filesize = buf.st_size;
|
|
}
|
|
int mapsize = ((filesize + pagesize - 1) / pagesize) * pagesize;
|
|
char* mem = mmap(
|
|
0,
|
|
mapsize,
|
|
PROT_READ,
|
|
MAP_PRIVATE,
|
|
fd,
|
|
0);
|
|
if(mem == MAP_FAILED){
|
|
fprintf(stderr, "Mapping failed for %s: %s\n", fasl_file, strerror(errno));
|
|
exit(-1);
|
|
}
|
|
fasl_port p;
|
|
p.membase = mem;
|
|
p.memp = mem;
|
|
p.memq = mem + filesize;
|
|
p.marks = 0;
|
|
p.marks_size = 0;
|
|
while(p.memp < p.memq){
|
|
ikp v = ik_fasl_read(pcb, &p);
|
|
if(p.marks_size){
|
|
ik_munmap((unsigned char*) p.marks, p.marks_size*sizeof(ikp*));
|
|
p.marks = 0;
|
|
p.marks_size = 0;
|
|
}
|
|
ikp val = ik_exec_code(pcb, v);
|
|
val = void_object;
|
|
if(val != void_object){
|
|
ik_print(val);
|
|
}
|
|
}
|
|
if(p.memp != p.memq){
|
|
fprintf(stderr, "fasl-read did not reach eof!\n");
|
|
exit(-10);
|
|
}
|
|
{
|
|
int err = munmap(mem, mapsize);
|
|
if(err != 0){
|
|
fprintf(stderr, "Failed to unmap fasl file: %s\n", strerror(errno));
|
|
exit(-1);
|
|
}
|
|
}
|
|
close(fd);
|
|
}
|
|
#endif
|
|
|
|
|
|
static ikp
|
|
alloc_code(int size, ikpcb* pcb){
|
|
int required_memory = align_to_next_page(size);
|
|
ikp mem = ik_mmap_code(required_memory, 0, pcb);
|
|
return (ikp)mem;
|
|
}
|
|
|
|
|
|
void
|
|
ik_relocate_code(ikp code){
|
|
ikp vec = ref(code, disp_code_reloc_vector);
|
|
ikp size = ref(vec, off_vector_length);
|
|
ikp data = code + disp_code_data;
|
|
ikp p = vec + off_vector_data;
|
|
ikp q = p + (int)size;
|
|
while(p < q){
|
|
int r = unfix(ref(p, 0));
|
|
if(r == 0){
|
|
fprintf(stderr, "unset reloc!\n");
|
|
exit(-1);
|
|
}
|
|
int tag = r & 3;
|
|
int code_off = r >> 2;
|
|
if(tag == 0){
|
|
/* vanilla object */
|
|
ref(data, code_off) = ref(p, wordsize);
|
|
p += (2*wordsize);
|
|
}
|
|
else if(tag == 2){
|
|
/* displaced object */
|
|
int obj_off = unfix(ref(p, wordsize));
|
|
ikp obj = ref(p, 2*wordsize);
|
|
ref(data, code_off) = obj + obj_off;
|
|
p += (3*wordsize);
|
|
}
|
|
else if(tag == 3){
|
|
/* jump label */
|
|
int obj_off = unfix(ref(p, wordsize));
|
|
ikp obj = ref(p, 2*wordsize);
|
|
ikp displaced_object = obj + obj_off;
|
|
ikp next_word = data + code_off + wordsize;
|
|
ikp relative_distance = displaced_object - (int)next_word;
|
|
ref(next_word, -wordsize) = relative_distance;
|
|
p += (3*wordsize);
|
|
}
|
|
else if(tag == 1){
|
|
/* foreign object */
|
|
ikp str = ref(p, wordsize);
|
|
char* name;
|
|
if(tagof(str) == bytevector_tag){
|
|
name = (char*) str + off_bytevector_data;
|
|
} else {
|
|
fprintf(stderr, "foreign name is not a bytevector\n");
|
|
exit(-1);
|
|
}
|
|
dlerror();
|
|
void* sym = dlsym(RTLD_DEFAULT, name);
|
|
char* err = dlerror();
|
|
if(err){
|
|
fprintf(stderr, "failed to find foreign name %s: %s\n", name, err);
|
|
exit(-1);
|
|
}
|
|
ref(data,code_off) = sym;
|
|
p += (2*wordsize);
|
|
}
|
|
else {
|
|
fprintf(stderr, "invalid reloc 0x%08x (tag=%d)\n", r, tag);
|
|
exit(-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static char fasl_read_byte(fasl_port* p){
|
|
#if USE_ZLIB
|
|
int c = gzgetc(p->fh);
|
|
if(c != -1){
|
|
return (char)c;
|
|
#else
|
|
if(p->memp < p->memq){
|
|
char c = *(p->memp);
|
|
p->memp++;
|
|
return c;
|
|
#endif
|
|
} else {
|
|
fprintf(stderr, "fasl_read_byte: read beyond eof\n");
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
static void fasl_read_buf(fasl_port* p, void* buf, int n){
|
|
#if USE_ZLIB
|
|
int bytes = gzread(p->fh, buf, n);
|
|
if(bytes == n){
|
|
return;
|
|
#else
|
|
if((p->memp+n) <= p->memq){
|
|
memcpy(buf, p->memp, n);
|
|
p->memp += n;
|
|
#endif
|
|
} else {
|
|
fprintf(stderr, "fasl_read_buf: read beyond eof\n");
|
|
exit(-1);
|
|
}
|
|
}
|
|
typedef struct{
|
|
int code_size;
|
|
int reloc_size;
|
|
ikp closure_size;
|
|
} code_header;
|
|
|
|
|
|
|
|
static ikp do_read(ikpcb* pcb, fasl_port* p){
|
|
char c = fasl_read_byte(p);
|
|
int put_mark_index = 0;
|
|
if(c == '>'){
|
|
int idx = 0;
|
|
fasl_read_buf(p, &idx, sizeof(int));
|
|
put_mark_index = idx;
|
|
c = fasl_read_byte(p);
|
|
if(idx <= 0){
|
|
fprintf(stderr, "fasl_read: invalid index %d\n", idx);
|
|
exit(-1);
|
|
}
|
|
if(p->marks){
|
|
if(idx >= p->marks_size){
|
|
fprintf(stderr, "BUG: mark too big: %d\n", idx);
|
|
exit(-1);
|
|
}
|
|
if(idx < p->marks_size){
|
|
if(p->marks[idx] != 0){
|
|
fprintf(stderr, "mark %d already set\n", idx);
|
|
ik_print(p->marks[idx]);
|
|
exit(-1);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
/* allocate marks */
|
|
p->marks = (ikp*)ik_mmap(pagesize*sizeof(ikp*));
|
|
bzero(p->marks, pagesize*sizeof(ikp*));
|
|
p->marks_size = pagesize;
|
|
}
|
|
}
|
|
if(c == 'x'){
|
|
int code_size;
|
|
ikp freevars;
|
|
fasl_read_buf(p, &code_size, sizeof(int));
|
|
fasl_read_buf(p, &freevars, sizeof(ikp));
|
|
ikp annotation = do_read(pcb, p);
|
|
ikp code = alloc_code(align(code_size+disp_code_data), pcb);
|
|
ref(code, 0) = code_tag;
|
|
ref(code, disp_code_code_size) = fix(code_size);
|
|
ref(code, disp_code_freevars) = freevars;
|
|
ref(code, disp_code_annotation) = annotation;
|
|
fasl_read_buf(p, code+disp_code_data, code_size);
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = code+vector_tag;
|
|
}
|
|
ref(code, disp_code_reloc_vector) = do_read(pcb, p);
|
|
ik_relocate_code(code);
|
|
return code+vector_tag;
|
|
}
|
|
else if(c == 'P'){
|
|
ikp pair = ik_alloc(pcb, pair_size) + pair_tag;
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = pair;
|
|
}
|
|
ref(pair, off_car) = do_read(pcb, p);
|
|
ref(pair, off_cdr) = do_read(pcb, p);
|
|
return pair;
|
|
}
|
|
else if(c == 'M'){
|
|
/* symbol */
|
|
ikp str = do_read(pcb, p);
|
|
ikp sym = ikrt_string_to_symbol(str, pcb);
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = sym;
|
|
}
|
|
return sym;
|
|
}
|
|
else if(c == 's'){
|
|
/* ascii string */
|
|
int len;
|
|
fasl_read_buf(p, &len, sizeof(int));
|
|
int size = align(len*string_char_size + disp_string_data);
|
|
ikp str = ik_alloc(pcb, size) + string_tag;
|
|
ref(str, off_string_length) = fix(len);
|
|
fasl_read_buf(p, str+off_string_data, len);
|
|
{
|
|
unsigned char* pi = (unsigned char*) (str+off_string_data);
|
|
ikp* pj = (ikp*) (str+off_string_data);
|
|
int i = len-1;
|
|
for(i=len-1; i >= 0; i--){
|
|
pj[i] = integer_to_char(pi[i]);
|
|
}
|
|
}
|
|
//str[off_string_data+len] = 0;
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = str;
|
|
}
|
|
return str;
|
|
}
|
|
else if(c == 'S'){
|
|
/* string */
|
|
int len;
|
|
fasl_read_buf(p, &len, sizeof(int));
|
|
int size = align(len*string_char_size + disp_string_data);
|
|
ikp str = ik_alloc(pcb, size) + string_tag;
|
|
ref(str, off_string_length) = fix(len);
|
|
int i;
|
|
for(i=0; i<len; i++){
|
|
int c;
|
|
fasl_read_buf(p, &c, sizeof(int));
|
|
string_set(str, i, integer_to_char(c));
|
|
}
|
|
//str[off_string_data+len*string_char_size] = 0;
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = str;
|
|
}
|
|
return str;
|
|
}
|
|
|
|
else if(c == 'V'){
|
|
int len;
|
|
fasl_read_buf(p, &len, sizeof(int));
|
|
int size = align(len * wordsize + disp_vector_data);
|
|
ikp vec = ik_alloc(pcb, size) + vector_tag;
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = vec;
|
|
}
|
|
ref(vec, off_vector_length) = fix(len);
|
|
int i;
|
|
for(i=0; i<len; i++){
|
|
ref(vec, off_vector_data + i*wordsize) = do_read(pcb, p);
|
|
}
|
|
return vec;
|
|
}
|
|
else if(c == 'I'){
|
|
ikp fixn;
|
|
fasl_read_buf(p, &fixn, sizeof(int));
|
|
return fixn;
|
|
}
|
|
else if(c == 'F'){
|
|
return false_object;
|
|
}
|
|
else if(c == 'T'){
|
|
return true_object;
|
|
}
|
|
else if(c == 'N'){
|
|
return IK_NULL_OBJECT;
|
|
}
|
|
else if(c == 'c'){
|
|
unsigned char x = (unsigned char) fasl_read_byte(p);
|
|
return int_to_scheme_char(x);
|
|
}
|
|
else if(c == 'G'){
|
|
/* G is for gensym */
|
|
ikp pretty = do_read(pcb, p);
|
|
ikp unique = do_read(pcb, p);
|
|
ikp sym = ikrt_strings_to_gensym(pretty, unique, pcb);
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = sym;
|
|
}
|
|
return sym;
|
|
}
|
|
else if(c == 'R'){ /* R is for RTD */
|
|
ikp name = do_read(pcb, p);
|
|
ikp symb = do_read(pcb, p);
|
|
int i, n;
|
|
fasl_read_buf(p, &n, sizeof(int));
|
|
ikp fields;
|
|
if(n == 0){
|
|
fields = null_object;
|
|
} else {
|
|
fields = ik_alloc(pcb, n * align(pair_size)) + pair_tag;
|
|
ikp ptr = fields;
|
|
for(i=0; i<n; i++){
|
|
ref(ptr, off_car) = do_read(pcb, p);
|
|
ref(ptr, off_cdr) = ptr + align(pair_size);
|
|
ptr += align(pair_size);
|
|
}
|
|
ptr -= pair_size;
|
|
ref(ptr, off_cdr) = null_object;
|
|
}
|
|
ikp gensym_val = ref(symb, off_symbol_record_value);
|
|
ikp rtd;
|
|
if(gensym_val == unbound_object){
|
|
rtd = ik_alloc(pcb, align(rtd_size)) + vector_tag;
|
|
ikp base_rtd = pcb->base_rtd;
|
|
ref(rtd, off_rtd_rtd) = base_rtd;
|
|
ref(rtd, off_rtd_name) = name;
|
|
ref(rtd, off_rtd_length) = fix(n);
|
|
ref(rtd, off_rtd_fields) = fields;
|
|
ref(rtd, off_rtd_printer) = false_object;
|
|
ref(rtd, off_rtd_symbol) = symb;
|
|
ref(symb, off_symbol_record_value) = rtd;
|
|
pcb->dirty_vector[page_index(symb+off_symbol_record_value)] = -1;
|
|
} else {
|
|
rtd = gensym_val;
|
|
}
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = rtd;
|
|
}
|
|
return rtd;
|
|
}
|
|
else if(c == 'Q'){ /* thunk */
|
|
ikp proc = ik_alloc(pcb, align(disp_closure_data)) + closure_tag;
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = proc;
|
|
}
|
|
ikp code = do_read(pcb, p);
|
|
ref(proc, -closure_tag) = code + off_code_data;
|
|
return proc;
|
|
}
|
|
else if(c == '<'){
|
|
int idx;
|
|
fasl_read_buf(p, &idx, sizeof(int));
|
|
if(idx <= 0){
|
|
fprintf(stderr, "invalid index for ref %d\n", idx);
|
|
exit(-1);
|
|
}
|
|
if(idx >= p->marks_size){
|
|
fprintf(stderr, "invalid index for ref %d\n", idx);
|
|
exit(-1);
|
|
}
|
|
ikp obj = p->marks[idx];
|
|
if(obj){
|
|
return obj;
|
|
} else {
|
|
fprintf(stderr, "reference to uninitialized mark %d\n", idx);
|
|
exit(-1);
|
|
}
|
|
}
|
|
else if(c == 'v'){
|
|
/* bytevector */
|
|
int len;
|
|
fasl_read_buf(p, &len, sizeof(int));
|
|
int size = align(len + disp_bytevector_data + 1);
|
|
ikp x = ik_alloc(pcb, size) + bytevector_tag;
|
|
ref(x, off_bytevector_length) = fix(len);
|
|
fasl_read_buf(p, x+off_bytevector_data, len);
|
|
x[off_bytevector_data+len] = 0;
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = x;
|
|
}
|
|
return x;
|
|
}
|
|
else if(c == 'l'){
|
|
int len = (unsigned char) fasl_read_byte(p);
|
|
if(len < 0){
|
|
fprintf(stderr, "invalid len=%d\n", len);
|
|
exit(-1);
|
|
}
|
|
ikp pair = ik_alloc(pcb, pair_size * (len+1)) + pair_tag;
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = pair;
|
|
}
|
|
int i; ikp pt = pair;
|
|
for(i=0; i<len; i++){
|
|
ref(pt, off_car) = do_read(pcb, p);
|
|
ref(pt, off_cdr) = pt + pair_size;
|
|
pt += pair_size;
|
|
}
|
|
ref(pt, off_car) = do_read(pcb, p);
|
|
ref(pt, off_cdr) = do_read(pcb, p);
|
|
return pair;
|
|
}
|
|
else if(c == 'L'){
|
|
int len;
|
|
fasl_read_buf(p, &len, sizeof(int));
|
|
if(len < 0){
|
|
fprintf(stderr, "invalid len=%d\n", len);
|
|
exit(-1);
|
|
}
|
|
ikp pair = ik_alloc(pcb, pair_size * (len+1)) + pair_tag;
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = pair;
|
|
}
|
|
int i; ikp pt = pair;
|
|
for(i=0; i<len; i++){
|
|
ref(pt, off_car) = do_read(pcb, p);
|
|
ref(pt, off_cdr) = pt + pair_size;
|
|
pt += pair_size;
|
|
}
|
|
ref(pt, off_car) = do_read(pcb, p);
|
|
ref(pt, off_cdr) = do_read(pcb, p);
|
|
return pair;
|
|
}
|
|
else if(c == 'f'){
|
|
ikp x = ik_alloc(pcb, flonum_size) + vector_tag;
|
|
ref(x, -vector_tag) = flonum_tag;
|
|
fasl_read_buf(p, x+disp_flonum_data-vector_tag, 8);
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = x;
|
|
}
|
|
return x;
|
|
}
|
|
else if(c == 'C'){
|
|
int n;
|
|
fasl_read_buf(p, &n, sizeof(int));
|
|
return int_to_scheme_char(n);
|
|
}
|
|
else if(c == 'b'){
|
|
int len;
|
|
int sign = 0;
|
|
fasl_read_buf(p, &len, sizeof(int));
|
|
if(len < 0) {
|
|
sign = 1;
|
|
len = -len;
|
|
}
|
|
if(len & 3){
|
|
fprintf(stderr, "Error in fasl-read: invalid bignum length %d\n", len);
|
|
exit(-1);
|
|
}
|
|
unsigned int tag = bignum_tag | (sign << bignum_sign_shift) |
|
|
((len >> 2) << bignum_length_shift);
|
|
ikp x = ik_alloc(pcb, align(len + disp_bignum_data)) + vector_tag;
|
|
ref(x, -vector_tag) = (ikp) tag;
|
|
fasl_read_buf(p, x+off_bignum_data, len);
|
|
if(put_mark_index){
|
|
p->marks[put_mark_index] = x;
|
|
}
|
|
return x;
|
|
}
|
|
else {
|
|
fprintf(stderr, "invalid type '%c' (0x%02x) found in fasl file\n", c, c);
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
|
|
static ikp ik_fasl_read(ikpcb* pcb, fasl_port* p){
|
|
/* first check the header */
|
|
char buf[IK_FASL_HEADER_LEN];
|
|
#if USE_ZLIB
|
|
int bytes = gzread(p->fh, buf, IK_FASL_HEADER_LEN);
|
|
if(bytes == 0){
|
|
return 0;
|
|
}
|
|
#else
|
|
fasl_read_buf(p, buf, IK_FASL_HEADER_LEN);
|
|
#endif
|
|
if(strncmp(buf, IK_FASL_HEADER, IK_FASL_HEADER_LEN) != 0){
|
|
fprintf(stderr, "invalid fasl header\n");
|
|
exit(-1);
|
|
}
|
|
return do_read(pcb, p);
|
|
}
|