diff options
Diffstat (limited to 'nasmlib.c')
| -rw-r--r-- | nasmlib.c | 305 |
1 files changed, 0 insertions, 305 deletions
@@ -562,311 +562,6 @@ struct RAA *raa_write(struct RAA *r, int32_t posn, int64_t value) return result; } -/* Aggregate SAA components smaller than this */ -#define SAA_BLKLEN 65536 - -struct SAA *saa_init(size_t elem_len) -{ - struct SAA *s; - char *data; - - s = nasm_zalloc(sizeof(struct SAA)); - - if (elem_len >= SAA_BLKLEN) - s->blk_len = elem_len; - else - s->blk_len = SAA_BLKLEN - (SAA_BLKLEN % elem_len); - - s->elem_len = elem_len; - s->length = s->blk_len; - data = nasm_malloc(s->blk_len); - s->nblkptrs = s->nblks = 1; - s->blk_ptrs = nasm_malloc(sizeof(char *)); - s->blk_ptrs[0] = data; - s->wblk = s->rblk = &s->blk_ptrs[0]; - - return s; -} - -void saa_free(struct SAA *s) -{ - char **p; - size_t n; - - for (p = s->blk_ptrs, n = s->nblks; n; p++, n--) - nasm_free(*p); - - nasm_free(s->blk_ptrs); - nasm_free(s); -} - -/* Add one allocation block to an SAA */ -static void saa_extend(struct SAA *s) -{ - size_t blkn = s->nblks++; - - if (blkn >= s->nblkptrs) { - size_t rindex = s->rblk - s->blk_ptrs; - size_t windex = s->wblk - s->blk_ptrs; - - s->nblkptrs <<= 1; - s->blk_ptrs = nasm_realloc(s->blk_ptrs, s->nblkptrs*sizeof(char *)); - - s->rblk = s->blk_ptrs + rindex; - s->wblk = s->blk_ptrs + windex; - } - - s->blk_ptrs[blkn] = nasm_malloc(s->blk_len); - s->length += s->blk_len; -} - -void *saa_wstruct(struct SAA *s) -{ - void *p; - - if (s->wpos % s->elem_len) - nasm_malloc_error(ERR_PANIC|ERR_NOFILE, - "misaligned wpos in saa_wstruct"); - - if (s->wpos + s->elem_len > s->blk_len) { - if (s->wpos != s->blk_len) - nasm_malloc_error(ERR_PANIC|ERR_NOFILE, - "unfilled block in saa_wstruct"); - - if (s->wptr + s->elem_len > s->length) - saa_extend(s); - s->wblk++; - s->wpos = 0; - } - - p = *s->wblk + s->wpos; - s->wpos += s->elem_len; - s->wptr += s->elem_len; - - if (s->wptr > s->datalen) - s->datalen = s->wptr; - - return p; -} - -void saa_wbytes(struct SAA *s, const void *data, size_t len) -{ - const char *d = data; - - while (len) { - size_t l = s->blk_len - s->wpos; - if (l > len) - l = len; - if (l) { - if (d) { - memcpy(*s->wblk + s->wpos, d, l); - d += l; - } else - memset(*s->wblk + s->wpos, 0, l); - s->wpos += l; - s->wptr += l; - len -= l; - - if (s->datalen < s->wptr) - s->datalen = s->wptr; - } - if (len) { - if (s->wptr >= s->length) - saa_extend(s); - s->wblk++; - s->wpos = 0; - } - } -} - -/* write unsigned LEB128 value to SAA */ -void saa_wleb128u(struct SAA *psaa, int value) -{ - char temp[64], *ptemp; - uint8_t byte; - int len; - - ptemp = temp; - len = 0; - do - { - byte = value & 127; - value >>= 7; - if (value != 0) /* more bytes to come */ - byte |= 0x80; - *ptemp = byte; - ptemp++; - len++; - } while (value != 0); - saa_wbytes(psaa, temp, len); -} - -/* write signed LEB128 value to SAA */ -void saa_wleb128s(struct SAA *psaa, int value) -{ - char temp[64], *ptemp; - uint8_t byte; - bool more, negative; - int size, len; - - ptemp = temp; - more = 1; - negative = (value < 0); - size = sizeof(int) * 8; - len = 0; - while(more) - { - byte = value & 0x7f; - value >>= 7; - if (negative) - /* sign extend */ - value |= - (1 <<(size - 7)); - /* sign bit of byte is second high order bit (0x40) */ - if ((value == 0 && ! (byte & 0x40)) || - ((value == -1) && (byte & 0x40))) - more = 0; - else - byte |= 0x80; - *ptemp = byte; - ptemp++; - len++; - } - saa_wbytes(psaa, temp, len); -} - -void saa_rewind(struct SAA *s) -{ - s->rblk = s->blk_ptrs; - s->rpos = s->rptr = 0; -} - -void *saa_rstruct(struct SAA *s) -{ - void *p; - - if (s->rptr + s->elem_len > s->datalen) - return NULL; - - if (s->rpos % s->elem_len) - nasm_malloc_error(ERR_PANIC|ERR_NOFILE, - "misaligned rpos in saa_rstruct"); - - if (s->rpos + s->elem_len > s->blk_len) { - s->rblk++; - s->rpos = 0; - } - - p = *s->rblk + s->rpos; - s->rpos += s->elem_len; - s->rptr += s->elem_len; - - return p; -} - -const void *saa_rbytes(struct SAA *s, size_t *lenp) -{ - const void *p; - size_t len; - - if (s->rptr >= s->datalen) { - *lenp = 0; - return NULL; - } - - if (s->rpos >= s->blk_len) { - s->rblk++; - s->rpos = 0; - } - - len = *lenp; - if (len > s->datalen - s->rptr) - len = s->datalen - s->rptr; - if (len > s->blk_len - s->rpos) - len = s->blk_len - s->rpos; - - *lenp = len; - p = *s->rblk + s->rpos; - - s->rpos += len; - s->rptr += len; - - return p; -} - -void saa_rnbytes(struct SAA *s, void *data, size_t len) -{ - char *d = data; - - if (s->rptr + len > s->datalen) { - nasm_malloc_error(ERR_PANIC|ERR_NOFILE, "overrun in saa_rnbytes"); - return; - } - - while (len) { - size_t l; - const void *p; - - l = len; - p = saa_rbytes(s, &l); - - memcpy(d, p, l); - d += l; - len -= l; - } -} - -/* Same as saa_rnbytes, except position the counter first */ -void saa_fread(struct SAA *s, size_t posn, void *data, size_t len) -{ - size_t ix; - - if (posn+len > s->datalen) { - nasm_malloc_error(ERR_PANIC|ERR_NOFILE, "overrun in saa_fread"); - return; - } - - ix = posn / s->blk_len; - s->rptr = posn; - s->rpos = posn % s->blk_len; - s->rblk = &s->blk_ptrs[ix]; - - saa_rnbytes(s, data, len); -} - -/* Same as saa_wbytes, except position the counter first */ -void saa_fwrite(struct SAA *s, size_t posn, const void *data, size_t len) -{ - size_t ix; - - if (posn > s->datalen) { - /* Seek beyond the end of the existing array not supported */ - nasm_malloc_error(ERR_PANIC|ERR_NOFILE, "overrun in saa_fwrite"); - return; - } - - ix = posn / s->blk_len; - s->wptr = posn; - s->wpos = posn % s->blk_len; - s->wblk = &s->blk_ptrs[ix]; - - if (!s->wpos) { - s->wpos = s->blk_len; - s->wblk--; - } - - saa_wbytes(s, data, len); -} - -void saa_fpwrite(struct SAA *s, FILE * fp) -{ - const char *data; - size_t len; - - saa_rewind(s); - while (len = s->datalen, (data = saa_rbytes(s, &len)) != NULL) - fwrite(data, 1, len, fp); -} - /* * Common list of prefix names */ |