Fixes https://bugs.winehq.org/show_bug.cgi?id=44492
The selector table is exclusively 32-bit, so trying to get selector entries with a 64-bit wineserver will return the wrong values due to the different size of (long *).
Signed-off-by: Zebediah Figura z.figura12@gmail.com --- server/ptrace.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/server/ptrace.c b/server/ptrace.c index a647df9..704b17d 100644 --- a/server/ptrace.c +++ b/server/ptrace.c @@ -517,13 +517,13 @@ void get_selector_entry( struct thread *thread, int entry, unsigned int *base, } if (suspend_for_ptrace( thread )) { - unsigned char flags_buf[sizeof(long)]; - long *addr = (long *)(unsigned long)thread->process->ldt_copy + entry; - if (read_thread_long( thread, addr, (long *)base ) == -1) goto done; - if (read_thread_long( thread, addr + 8192, (long *)limit ) == -1) goto done; - addr = (long *)(unsigned long)thread->process->ldt_copy + 2*8192 + (entry / sizeof(long)); - if (read_thread_long( thread, addr, (long *)flags_buf ) == -1) goto done; - *flags = flags_buf[entry % sizeof(long)]; + unsigned char flags_buf[4]; + unsigned long addr = (unsigned long)thread->process->ldt_copy + (entry * 4); + if (read_thread_long( thread, (long *)addr, (long *)base ) == -1) goto done; + if (read_thread_long( thread, (long *)(addr + (8192 * 4)), (long *)limit ) == -1) goto done; + addr = (unsigned long)thread->process->ldt_copy + (2 * 8192 * 4) + (entry & ~3); + if (read_thread_long( thread, (long *)addr, (long *)flags_buf ) == -1) goto done; + *flags = flags_buf[entry % 4]; done: resume_after_ptrace( thread ); }