mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-28 00:28:52 +00:00
1906cf93f8
You might just say: 'Yeah! crosstool-NG's got its own repo!". Unfortunately, that's because the previous repo got damaged beyond repair and I had no backup. That means I'm putting backups in place in the afternoon. That also means we've lost history... :-(
56 lines
1.7 KiB
Diff
56 lines
1.7 KiB
Diff
http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/sysdeps/unix/sysv/linux/sh/sysdep.h.diff?r1=1.9&r2=1.10&cvsroot=glibc
|
|
|
|
Ankur Sheth said:
|
|
|
|
"This is actually a workaround for a bug in the sh4. The actual bug is
|
|
documented here :
|
|
http://documentation.renesas.com/eng/products/mpumcu/tu/tnsh7456ae.pdf
|
|
Basically the cache & TLB should not be accessed for 4 (or was it 5?) cycles
|
|
after isssuing a TRAPA instruction. I didn't run into any specific problem
|
|
because of this bug, but it seems useful to have and the patch itself seems
|
|
pretty harmless."
|
|
|
|
|
|
===================================================================
|
|
RCS file: /cvs/glibc/libc/sysdeps/unix/sysv/linux/sh/sysdep.h,v
|
|
retrieving revision 1.9
|
|
retrieving revision 1.10
|
|
diff -u -r1.9 -r1.10
|
|
--- libc/sysdeps/unix/sysv/linux/sh/sysdep.h 2003/09/01 04:05:21 1.9
|
|
+++ libc/sysdeps/unix/sysv/linux/sh/sysdep.h 2003/10/15 04:36:32 1.10
|
|
@@ -183,6 +183,13 @@
|
|
# endif /* _LIBC_REENTRANT */
|
|
#endif /* PIC */
|
|
|
|
+# ifdef NEED_SYSCALL_INST_PAD
|
|
+# define SYSCALL_INST_PAD \
|
|
+ or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0
|
|
+# else
|
|
+# define SYSCALL_INST_PAD
|
|
+# endif
|
|
+
|
|
#define SYSCALL_INST0 trapa #0x10
|
|
#define SYSCALL_INST1 trapa #0x11
|
|
#define SYSCALL_INST2 trapa #0x12
|
|
@@ -195,19 +202,13 @@
|
|
#define DO_CALL(syscall_name, args) \
|
|
mov.l 1f,r3; \
|
|
SYSCALL_INST##args; \
|
|
+ SYSCALL_INST_PAD; \
|
|
bra 2f; \
|
|
nop; \
|
|
.align 2; \
|
|
1: .long SYS_ify (syscall_name); \
|
|
2:
|
|
|
|
-# ifdef NEED_SYSCALL_INST_PAD
|
|
-# define SYSCALL_INST_PAD \
|
|
- or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0
|
|
-# else
|
|
-# define SYSCALL_INST_PAD
|
|
-# endif
|
|
-
|
|
#else /* not __ASSEMBLER__ */
|
|
|
|
#define SYSCALL_INST_STR0 "trapa #0x10\n\t"
|