H.J. Lu df76ff3a44
x32: Properly pass long to syscall [BZ #25810 ] ...
X32 has 32-bit long and pointer with 64-bit off_t. Since x32 psABI
requires that pointers passed in registers must be zero-extended to
64bit, x32 can share many syscall interfaces with LP64. When a LP64
syscall with long and unsigned long arguments is used for x32, these
arguments must be properly extended to 64-bit. Otherwise if the upper
32 bits of the register have undefined value, such a syscall will be
rejected by kernel.
Enforce zero-extension for pointers and array system call arguments.
For integer types, extend to int64_t (the full register) using a
regular cast, resulting in zero or sign extension based on the
signedness of the original type.
For
void *mmap(void *addr, size_t length, int prot, int flags,
int fd, off_t offset);
we now generate
0: 41 f7 c1 ff 0f 00 00 test $0xfff,%r9d
7: 75 1f jne 28 <__mmap64+0x28>
9: 48 63 d2 movslq %edx,%rdx
c: 89 f6 mov %esi,%esi
e: 4d 63 c0 movslq %r8d,%r8
11: 4c 63 d1 movslq %ecx,%r10
14: b8 09 00 00 40 mov $0x40000009,%eax
19: 0f 05 syscall
That is
1. addr is unchanged.
2. length is zero-extend to 64 bits.
3. prot is sign-extend to 64 bits.
4. flags is sign-extend to 64 bits.
5. fd is sign-extend to 64 bits.
6. offset is unchanged.
For int arguments, since kernel uses only the lower 32 bits and ignores
the upper 32 bits in 64-bit registers, these work correctly.
Tested on x86-64 and x32. There are no code changes on x86-64.
2020-04-13 10:31:26 -07:00
2020-04-03 18:07:55 +00:00
2020-04-03 18:07:55 +00:00
2020-04-03 18:07:55 +00:00
2020-02-13 17:32:00 +01:00
2020-04-03 18:07:55 +00:00
2020-04-02 09:21:05 -07:00
2020-04-03 18:07:55 +00:00
2020-04-07 06:44:37 -07:00
2020-04-03 18:07:55 +00:00
2020-01-02 10:18:23 +01:00
2020-04-03 18:07:55 +00:00
2020-04-03 18:07:55 +00:00
2020-04-03 18:07:55 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-04-03 18:07:55 +00:00
2020-04-03 18:07:55 +00:00
2020-04-03 18:07:55 +00:00
2020-04-03 18:07:55 +00:00
2020-01-01 00:14:33 +00:00
2020-04-03 18:07:55 +00:00
2020-04-03 18:07:55 +00:00
2020-01-02 10:18:23 +01:00
2020-01-01 00:14:33 +00:00
2020-04-02 09:21:05 -07:00
2020-04-13 10:31:26 -07:00
2020-03-03 12:17:24 +01:00
2019-02-25 13:19:19 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-03-03 12:16:15 +01:00
2020-01-01 00:14:33 +00:00
2020-02-18 13:42:29 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-03-23 21:21:28 +01:00
2020-03-23 21:21:28 +01:00
2020-03-23 21:21:28 +01:00
2020-03-23 21:21:28 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:11:01 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-03 11:22:07 -03:00
2020-01-03 11:22:07 -03:00
2020-01-03 11:22:07 -03:00
2020-02-14 21:12:45 -03:00
2020-03-03 12:51:14 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-05 16:10:26 +01:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-02 10:18:10 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-07 12:45:27 +01:00
2020-03-09 10:26:46 +01:00
2020-03-09 10:26:46 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-03-03 12:16:15 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-03 10:02:05 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:15:38 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-04-02 09:21:06 -07:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:15:38 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-04-02 09:21:06 -07:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-18 23:55:47 +01:00
2020-01-02 10:18:10 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-19 13:46:31 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:21:22 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-01-03 11:22:07 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-09 10:26:46 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-09 11:51:08 +01:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:11:26 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:11:49 +01:00
2020-03-03 12:11:49 +01:00
2020-03-03 12:11:49 +01:00
2020-03-03 12:11:49 +01:00
2020-03-03 12:11:49 +01:00
2020-03-03 12:11:49 +01:00
2020-04-06 23:05:11 +02:00
2020-04-06 23:05:11 +02:00
2020-03-03 12:11:49 +01:00
2020-03-06 09:53:23 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-03-03 12:16:55 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:50:07 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:16:35 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-03-23 21:21:28 +01:00
2020-03-03 12:14:40 +01:00
2020-03-03 12:14:40 +01:00
2020-03-03 12:14:40 +01:00
2020-03-03 12:18:22 +01:00
2020-03-03 12:15:06 +01:00
2020-03-03 12:18:22 +01:00
2020-03-03 12:15:06 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:14:40 +01:00
2020-03-03 12:14:40 +01:00
2020-03-03 12:18:22 +01:00
2020-03-03 12:15:06 +01:00
2020-03-03 12:18:22 +01:00
2020-03-03 12:15:06 +01:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:06:39 +01:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:13:07 +01:00
2020-01-03 10:02:05 -03:00
2020-02-02 11:23:50 +01:00
2020-03-03 12:12:42 +01:00
2020-01-01 00:14:33 +00:00
2020-03-06 09:53:23 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-04-02 09:21:06 -07:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-07 17:55:08 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-03-06 09:53:23 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:13:29 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-03 12:12:11 +01:00
2020-01-01 00:14:33 +00:00
2020-04-03 18:07:55 +00:00
2020-03-03 14:28:08 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 21:12:45 -03:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-03 11:22:07 -03:00
2020-02-14 21:12:45 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-03 12:16:09 +01:00
2020-02-19 13:46:31 -03:00
2020-02-03 12:16:09 +01:00
2020-02-02 11:23:23 +01:00
2020-02-02 11:23:23 +01:00
2020-02-14 21:12:45 -03:00
2020-02-05 00:10:16 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-14 14:40:34 -08:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-02 10:18:10 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-04-09 21:19:19 +00:00
2020-02-09 11:51:08 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-02-19 10:54:02 -03:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-04-02 09:21:06 -07:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-02 10:18:10 +01:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-03-05 16:09:52 +01:00
2020-03-02 17:04:32 +01:00
2020-03-05 16:09:52 +01:00
2020-01-01 00:14:33 +00:00
2019-10-18 15:55:33 -04:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-04-02 09:21:06 -07:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
2020-01-01 00:14:33 +00:00
df76ff3a44