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authorDavid S. Miller <davem@sunset.davemloft.net>2005-09-28 23:21:11 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2005-09-28 23:21:11 -0400
commit8cf14af0a740fb7e9f94a203b5a989beb875d58f (patch)
treea7bec4d60c352e780d6a2b75e9b95e637e3a14f7 /include
parent705747ab87c96f1b4b8e73ba617c323d9087f6ac (diff)
[SPARC64]: Convert to use generic exception table support.
The funny "range" exception table entries we had were only used by the compat layer socketcall assembly, and it wasn't even needed there. For free we now get proper exception table sorting and fast binary searching. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/asm-sparc64/uaccess.h17
1 files changed, 2 insertions, 15 deletions
diff --git a/include/asm-sparc64/uaccess.h b/include/asm-sparc64/uaccess.h
index 80a65d7e3dbf..c099aa339784 100644
--- a/include/asm-sparc64/uaccess.h
+++ b/include/asm-sparc64/uaccess.h
@@ -70,25 +70,12 @@ static inline int access_ok(int type, const void __user * addr, unsigned long si
70 * with the main instruction path. This means when everything is well, 70 * with the main instruction path. This means when everything is well,
71 * we don't even have to jump over them. Further, they do not intrude 71 * we don't even have to jump over them. Further, they do not intrude
72 * on our cache or tlb entries. 72 * on our cache or tlb entries.
73 *
74 * There is a special way how to put a range of potentially faulting
75 * insns (like twenty ldd/std's with now intervening other instructions)
76 * You specify address of first in insn and 0 in fixup and in the next
77 * exception_table_entry you specify last potentially faulting insn + 1
78 * and in fixup the routine which should handle the fault.
79 * That fixup code will get
80 * (faulting_insn_address - first_insn_in_the_range_address)/4
81 * in %g2 (ie. index of the faulting instruction in the range).
82 */ 73 */
83 74
84struct exception_table_entry 75struct exception_table_entry {
85{ 76 unsigned int insn, fixup;
86 unsigned insn, fixup;
87}; 77};
88 78
89/* Special exable search, which handles ranges. Returns fixup */
90unsigned long search_extables_range(unsigned long addr, unsigned long *g2);
91
92extern void __ret_efault(void); 79extern void __ret_efault(void);
93 80
94/* Uh, these should become the main single-value transfer routines.. 81/* Uh, these should become the main single-value transfer routines..