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Call ast() from the syscall exit path as well as for full exception

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restores.
This commit is contained in:
Doug Rabson 2002-04-10 16:35:44 +00:00
parent 794cc3d8ae
commit ba4d213488
2 changed files with 84 additions and 2 deletions
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43
sys/ia64/ia64/exception.S
View File

@ -1406,8 +1406,49 @@ ENTRY(do_syscall, 0)
mov out1=r16 // arguments
add out2=(8*8),r16 // trapframe pointer
br.call.sptk.many rp=syscall // do the work
} { .mmi
3: rsm psr.i // we know that psr.i == 1
add r14=PC_CURTHREAD,r13 // &curthread
nop.i 0
;;
} { .mmi
ld8 r14=[r14] // curthread
;;
add r14=TD_KSE,r14 // &curthread->td_kse
nop.i 0
;;
} { .mmi
ld8 r14=[r14] // curkse
;;
add r14=KE_FLAGS,r14 // &curkse->ke_flags
nop.i 0
;;
} { .mmi
ld4 r14=[r14] // curkse->ke_flags
;;
nop.m 0
tbit.nz p6,p7=r14,10 // KEF_ASTPENDING
;;
} { .mib
nop.m 0
(p7) tbit.nz.or.andcm p6,p7=r14,11 // KEF_NEEDRESCHED
(p7) br.cond.dptk 2f
;;
} { .mmi
ssm psr.i // restore interrupts
;;
srlz.d
mov out0=loc0 // trapframe argument to ast()
} { .mib
nop.m 0
nop.i 0
br.call.sptk.many rp=ast
} { .mib
nop.m 0
nop.i 0
br 3b
} { .mii
ld8 r14=[loc0] // check tf_flags
2: ld8 r14=[loc0] // check tf_flags
dep r15=0,loc0,61,3 // physical address of trapframe
;;
tbit.z p6,p0=r14,0 // check FRAME_SYSCALL bit

43
sys/ia64/ia64/exception.s
View File

@ -1406,8 +1406,49 @@ ENTRY(do_syscall, 0)
mov out1=r16 // arguments
add out2=(8*8),r16 // trapframe pointer
br.call.sptk.many rp=syscall // do the work
} { .mmi
3: rsm psr.i // we know that psr.i == 1
add r14=PC_CURTHREAD,r13 // &curthread
nop.i 0
;;
} { .mmi
ld8 r14=[r14] // curthread
;;
add r14=TD_KSE,r14 // &curthread->td_kse
nop.i 0
;;
} { .mmi
ld8 r14=[r14] // curkse
;;
add r14=KE_FLAGS,r14 // &curkse->ke_flags
nop.i 0
;;
} { .mmi
ld4 r14=[r14] // curkse->ke_flags
;;
nop.m 0
tbit.nz p6,p7=r14,10 // KEF_ASTPENDING
;;
} { .mib
nop.m 0
(p7) tbit.nz.or.andcm p6,p7=r14,11 // KEF_NEEDRESCHED
(p7) br.cond.dptk 2f
;;
} { .mmi
ssm psr.i // restore interrupts
;;
srlz.d
mov out0=loc0 // trapframe argument to ast()
} { .mib
nop.m 0
nop.i 0
br.call.sptk.many rp=ast
} { .mib
nop.m 0
nop.i 0
br 3b
} { .mii
ld8 r14=[loc0] // check tf_flags
2: ld8 r14=[loc0] // check tf_flags
dep r15=0,loc0,61,3 // physical address of trapframe
;;
tbit.z p6,p0=r14,0 // check FRAME_SYSCALL bit