Changeset 1453 in svn for trunk/processor/foot.m4


Ignore:
Timestamp:
2013-11-08T10:08:04+01:00 (21 months ago)
Author:
Xuefer
Message:

update func prototype for relocate

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/processor/foot.m4

    r1452 r1453  
    137137dnl }}}
    138138define(`DEFINE_RELOCATE_API', `
    139 EXPORTED_FUNCTION(`void xc_processor_relocate_$1($1 *old_src, $1 *old_start, $1 *new_src, $1 *new_start TSRMLS_DC)') dnl {{{
     139/* old_src = readable element, before memcpy if any
     140 * new_src = writable element, after memcpy if any
     141 * virtual_old_src = brother pointers relatived to this address, before relocation
     142 * virtual_new_src = brother pointers relatived to this address, after  relocation
     143 */
     144EXPORTED_FUNCTION(`void xc_processor_relocate_$1($1 *old_src, $1 *virtual_old_src, $1 *new_src, $1 *virtual_new_src TSRMLS_DC)') dnl {{{
    140145{
    141     ptrdiff_t offset_from_old_start = 0; /* unkown X used later */
    142     $1 *const old_address = ptradd($1 *, offset_from_old_start, (ptrdiff_t) old_start);
    143     ptrdiff_t offset = ptrsub(old_address, old_src);
    144     $1 *const new_address = ptradd($1 *, new_src, offset);
     146    char *old_address = 0; /* unkown X used later */
     147    ptrdiff_t offset = ptrsub(old_address, (ptrdiff_t) virtual_old_src);
    145148
    146149    /* diff to new_ptr */
    147     ptrdiff_t ptrdiff = (ptrdiff_t) new_address;
    148     ptrdiff_t relocatediff = (ptrdiff_t) ptradd($1 *, new_start, offset);
    149     assert(new_src == ptradd($1 *, old_src, ptrdiff));
     150    ptrdiff_t ptrdiff = ptrsub(new_src, old_src);
     151    ptrdiff_t relocatediff = (ptrdiff_t) ptradd($1 *, virtual_new_src, offset);
     152    assert(ptradd($1 *, old_src, ptrdiff) == new_src);
    150153
    151154    xc_relocate_$1(new_src, ptrdiff, relocatediff TSRMLS_CC);
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