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[SPARC64]: Fix fault handling in unaligned trap handler.

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We were not calling kernel_mna_trap_fault() correctly.
Instead of being fancy, just return 0 vs. -EFAULT from
the assembler stubs, and handle that return value as
appropriate.

Create an "__retl_efault" stub for assembler exception
table entries and use it where possible.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2005-09-28 20:41:45 -07:00
parent 8cf14af0a7
commit 5fd29752f0
6 changed files with 95 additions and 87 deletions
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57
arch/sparc64/kernel/sys32.S
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@@ -157,6 +157,9 @@ sys32_socketcall: /* %o0=call, %o1=args */
or %g2, %lo(__socketcall_table_begin), %g2
jmpl %g2 + %o0, %g0
nop
do_einval:
retl
mov -EINVAL, %o0
.align 32
__socketcall_table_begin:
@@ -316,29 +319,37 @@ do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int)
nop
nop
do_einval:
retl
mov -EINVAL, %o0
do_efault:
retl
mov -EFAULT, %o0
.section __ex_table
.align 4
.word 1b, do_efault, 2b, do_efault, 3b, do_efault, 4b, do_efault
.word 5b, do_efault, 6b, do_efault, 7b, do_efault, 8b, do_efault
.word 9b, do_efault, 10b, do_efault, 11b, do_efault, 12b, do_efault
.word 13b, do_efault, 14b, do_efault, 15b, do_efault, 16b, do_efault
.word 17b, do_efault, 18b, do_efault, 19b, do_efault, 20b, do_efault
.word 21b, do_efault, 22b, do_efault, 23b, do_efault, 24b, do_efault
.word 25b, do_efault, 26b, do_efault, 27b, do_efault, 28b, do_efault
.word 29b, do_efault, 30b, do_efault, 31b, do_efault, 32b, do_efault
.word 33b, do_efault, 34b, do_efault, 35b, do_efault, 36b, do_efault
.word 37b, do_efault, 38b, do_efault, 39b, do_efault, 40b, do_efault
.word 41b, do_efault, 42b, do_efault, 43b, do_efault, 44b, do_efault
.word 45b, do_efault, 46b, do_efault, 47b, do_efault, 48b, do_efault
.word 49b, do_efault, 50b, do_efault, 51b, do_efault, 52b, do_efault
.word 53b, do_efault, 54b, do_efault, 55b, do_efault, 56b, do_efault
.word 57b, do_efault, 58b, do_efault, 59b, do_efault, 60b, do_efault
.word 61b, do_efault, 62b, do_efault
.word 1b, __retl_efault, 2b, __retl_efault
.word 3b, __retl_efault, 4b, __retl_efault
.word 5b, __retl_efault, 6b, __retl_efault
.word 7b, __retl_efault, 8b, __retl_efault
.word 9b, __retl_efault, 10b, __retl_efault
.word 11b, __retl_efault, 12b, __retl_efault
.word 13b, __retl_efault, 14b, __retl_efault
.word 15b, __retl_efault, 16b, __retl_efault
.word 17b, __retl_efault, 18b, __retl_efault
.word 19b, __retl_efault, 20b, __retl_efault
.word 21b, __retl_efault, 22b, __retl_efault
.word 23b, __retl_efault, 24b, __retl_efault
.word 25b, __retl_efault, 26b, __retl_efault
.word 27b, __retl_efault, 28b, __retl_efault
.word 29b, __retl_efault, 30b, __retl_efault
.word 31b, __retl_efault, 32b, __retl_efault
.word 33b, __retl_efault, 34b, __retl_efault
.word 35b, __retl_efault, 36b, __retl_efault
.word 37b, __retl_efault, 38b, __retl_efault
.word 39b, __retl_efault, 40b, __retl_efault
.word 41b, __retl_efault, 42b, __retl_efault
.word 43b, __retl_efault, 44b, __retl_efault
.word 45b, __retl_efault, 46b, __retl_efault
.word 47b, __retl_efault, 48b, __retl_efault
.word 49b, __retl_efault, 50b, __retl_efault
.word 51b, __retl_efault, 52b, __retl_efault
.word 53b, __retl_efault, 54b, __retl_efault
.word 55b, __retl_efault, 56b, __retl_efault
.word 57b, __retl_efault, 58b, __retl_efault
.word 59b, __retl_efault, 60b, __retl_efault
.word 61b, __retl_efault, 62b, __retl_efault
.previous