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-rw-r--r--arch/sparc64/kernel/entry.S250
1 files changed, 182 insertions, 68 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index a6e2d6da7..76f913ade 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -1,4 +1,4 @@
-/* $Id: entry.S,v 1.65 1997/08/29 15:51:29 jj Exp $
+/* $Id: entry.S,v 1.76 1998/01/05 17:00:13 jj Exp $
* arch/sparc64/kernel/entry.S: Sparc64 trap low-level entry points.
*
* Copyright (C) 1995,1997 David S. Miller (davem@caip.rutgers.edu)
@@ -121,7 +121,7 @@ sparc64_itlb_refbit_catch:
.align 32
.globl do_fpdis
do_fpdis:
- ldx [%g6 + AOFF_task_tss + AOFF_thread_flags], %g5 ! Load Group
+ lduh [%g6 + AOFF_task_tss + AOFF_thread_flags], %g5 ! Load Group
sethi %hi(TSTATE_PEF), %g4 ! IEU0
sethi %hi(FPDIS_OFF), %g3 ! IEU1
wr %g0, FPRS_FEF, %fprs ! LSU Group+4bubbles
@@ -337,9 +337,28 @@ setcc:
retl
stx %o1, [%o0 + PT_V9_TSTATE]
+ .globl utrap, utrap_ill
+utrap: brz,pn %g1, etrap
+ nop
+ save %sp, -128, %sp
+ rdpr %tstate, %l6
+ rdpr %cwp, %l7
+ andn %l6, TSTATE_CWP, %l6
+ wrpr %l6, %l7, %tstate
+ rdpr %tpc, %l6
+ rdpr %tnpc, %l7
+ wrpr %g1, 0, %tnpc
+ done
+utrap_ill:
+ call bad_trap
+ add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ ba,pt %xcc, rtrap
+ clr %l6
+
#ifdef CONFIG_BLK_DEV_FD
.globl floppy_hardint
floppy_hardint:
+ wr %g0, (1 << 11), %clear_softint
sethi %hi(doing_pdma), %g1
ld [%g1 + %lo(doing_pdma)], %g2
brz,pn %g2, floppy_dosoftint
@@ -404,8 +423,9 @@ floppy_fifo_emptied:
sethi %hi(irq_action), %g1
or %g1, %lo(irq_action), %g1
ldx [%g1 + (11 << 3)], %g3 ! irqaction[floppy_irq]
- ldx [%g3 + 0x10], %g4 ! action->mask
- st %g0, [%g4] ! SYSIO_ICLR_IDLE
+ ldx [%g3 + 0x10], %g4 ! action->mask == ino_bucket ptr
+ ldx [%g4 + 0x18], %g4 ! bucket->iclr
+ stw %g0, [%g4] ! SYSIO_ICLR_IDLE
membar #Sync ! probably not needed...
retry
@@ -446,14 +466,52 @@ do_mna:
cmp %g3, 1
bgu,a,pn %icc, winfix_mna
rdpr %tpc, %g3
+ mov DMMU_SFAR, %g4
+ mov TLB_SFSR, %g5
sethi %hi(109f), %g7
+ ldxa [%g4] ASI_DMMU, %g4
+ ldxa [%g5] ASI_DMMU, %g5
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
+ mov %l4, %o1
+ mov %l5, %o2
call mem_address_unaligned
add %sp, STACK_BIAS + REGWIN_SZ, %o0
ba,pt %xcc, rtrap
clr %l6
+ .globl do_lddfmna
+do_lddfmna:
+ mov DMMU_SFAR, %g4
+ mov TLB_SFSR, %g5
+ sethi %hi(109f), %g7
+ ldxa [%g4] ASI_DMMU, %g4
+ ldxa [%g5] ASI_DMMU, %g5
+ ba,pt %xcc, etrap
+109: or %g7, %lo(109b), %g7
+ mov %l4, %o1
+ mov %l5, %o2
+ call handle_lddfmna
+ add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ ba,pt %xcc, rtrap
+ clr %l6
+
+ .globl do_stdfmna
+do_stdfmna:
+ mov DMMU_SFAR, %g4
+ mov TLB_SFSR, %g5
+ sethi %hi(109f), %g7
+ ldxa [%g4] ASI_DMMU, %g4
+ ldxa [%g5] ASI_DMMU, %g5
+ ba,pt %xcc, etrap
+109: or %g7, %lo(109b), %g7
+ mov %l4, %o1
+ mov %l5, %o2
+ call handle_stdfmna
+ add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ ba,pt %xcc, rtrap
+ clr %l6
+
.globl breakpoint_trap
breakpoint_trap:
call sparc_breakpoint
@@ -471,13 +529,13 @@ sunos_indir:
mov %o7, %l4
cmp %o0, NR_SYSCALLS
blu,a,pt %icc, 1f
- sll %o0, 0x3, %o0
+ sll %o0, 0x2, %o0
sethi %hi(sunos_nosys), %l6
b,pt %xcc, 2f
or %l6, %lo(sunos_nosys), %l6
1: sethi %hi(sunos_sys_table), %l7
or %l7, %lo(sunos_sys_table), %l7
- ldx [%l7 + %o0], %l6
+ lduw [%l7 + %o0], %l6
2: mov %o1, %o0
mov %o2, %o1
mov %o3, %o2
@@ -526,7 +584,9 @@ sunos_execv:
add %sp, STACK_BIAS + REGWIN_SZ, %o0
.globl sys_pipe, sys_execve, sys_sigpause, sys_nis_syscall
- .globl sys_sigsuspend, sys_sigreturn
+ .globl sys_sigsuspend, sys_rt_sigsuspend, sys32_rt_sigsuspend
+ .globl sys_sigreturn, sys_rt_sigreturn
+ .globl sys32_sigreturn, sys32_rt_sigreturn
.globl sys32_execve, sys_ptrace
.align 32
sys_pipe: sethi %hi(sparc_pipe), %g1
@@ -546,42 +606,57 @@ sys32_execve: sethi %hi(sparc32_execve), %g1
add %sp, STACK_BIAS + REGWIN_SZ, %o0
jmpl %g1 + %lo(sparc32_execve), %g0
nop
-
- /* NOTE: %o0 has a correct value already */
-sys_sigpause: call do_sigpause
- add %sp, STACK_BIAS + REGWIN_SZ, %o1
- ldx [%curptr + AOFF_task_flags], %l5
- andcc %l5, 0x20, %g0
- be,pt %icc, rtrap
- clr %l6
- call syscall_trace
+sys_memory_ordering:
+ sethi %hi(sparc_memory_ordering), %g1
+ add %sp, STACK_BIAS + REGWIN_SZ, %o1
+ jmpl %g1 + %lo(sparc_memory_ordering), %g0
nop
- ba,pt %xcc, rtrap
- clr %l6
-linux_sparc_ni_syscall:
- sethi %hi(sys_ni_syscall), %l7
- b,pt %xcc,syscall_is_too_hard
- or %l7, %lo(sys_ni_syscall), %l7
- nop
-
.align 32
-sys_sigsuspend: call do_sigsuspend
- add %sp, STACK_BIAS + REGWIN_SZ, %o0
- ldx [%curptr + AOFF_task_flags], %l5
- andcc %l5, 0x20, %g0
- be,pt %icc, rtrap
- clr %l6
- call syscall_trace
- nop
-
- ba,pt %xcc, rtrap
- clr %l6
-
+sys_sigsuspend: add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ call do_sigsuspend
+ add %o7, 1f-.-4, %o7
+ nop
+sys_rt_sigsuspend: /* NOTE: %o0,%o1 have a correct value already */
+ add %sp, STACK_BIAS + REGWIN_SZ, %o2
+ call do_rt_sigsuspend
+ add %o7, 1f-.-4, %o7
+ nop
+sys32_rt_sigsuspend: /* NOTE: %o0,%o1 have a correct value already */
+ srl %o0, 0, %o0
+ add %sp, STACK_BIAS + REGWIN_SZ, %o2
+ call do_rt_sigsuspend32
+ add %o7, 1f-.-4, %o7
+ /* NOTE: %o0 has a correct value already */
+sys_sigpause: add %sp, STACK_BIAS + REGWIN_SZ, %o1
+ call do_sigpause
+ add %o7, 1f-.-4, %o7
+ nop
+sys_sigreturn: add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ call do_sigreturn
+ add %o7, 1f-.-4, %o7
+ nop
+sys32_sigreturn:
+ add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ call do_sigreturn32
+ add %o7, 1f-.-4, %o7
+ nop
+sys_rt_sigreturn:
+ add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ call do_rt_sigreturn
+ add %o7, 1f-.-4, %o7
+ nop
+sys32_rt_sigreturn:
+ add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ call do_rt_sigreturn32
+ add %o7, 1f-.-4, %o7
+ nop
+sys_ptrace: add %sp, STACK_BIAS + REGWIN_SZ, %o0
+ call do_ptrace
+ add %o7, 1f-.-4, %o7
+ nop
.align 32
-sys_sigreturn: call do_sigreturn
- add %sp, STACK_BIAS + REGWIN_SZ, %o0
- ldx [%curptr + AOFF_task_flags], %l5
+1: ldx [%curptr + AOFF_task_flags], %l5
andcc %l5, 0x20, %g0
be,pt %icc, rtrap
clr %l6
@@ -591,19 +666,6 @@ sys_sigreturn: call do_sigreturn
ba,pt %xcc, rtrap
clr %l6
- .align 32
-sys_ptrace: call do_ptrace
- add %sp, STACK_BIAS + REGWIN_SZ, %o0
- ldx [%curptr + AOFF_task_flags], %l5
- andcc %l5, 0x20, %g0
- be,pt %icc, rtrap
- clr %l6
- call syscall_trace
- nop
-
- ba,pt %xcc, rtrap
- clr %l6
-
/* This is how fork() was meant to be done, 12 instruction entry.
*
* I questioned the following code briefly, let me clear things
@@ -648,42 +710,94 @@ ret_from_syscall:
b,pt %xcc, ret_sys_call
ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0], %o0
+linux_sparc_ni_syscall:
+ sethi %hi(sys_ni_syscall), %l7
+ b,pt %xcc, 4f
+ or %l7, %lo(sys_ni_syscall), %l7
+
+linux_syscall_trace32:
+ call syscall_trace
+ nop
+ srl %i0, 0, %o0
+ mov %i4, %o4
+ srl %i1, 0, %o1
+ srl %i2, 0, %o2
+ b,pt %xcc, 2f
+ srl %i3, 0, %o3
+
linux_syscall_trace:
- call syscall_trace
- nop
- mov %i0, %o0
- mov %i1, %o1
- mov %i2, %o2
- mov %i3, %o3
- b,pt %xcc, 2f
- mov %i4, %o4
+ call syscall_trace
+ nop
+ mov %i0, %o0
+ mov %i1, %o1
+ mov %i2, %o2
+ mov %i3, %o3
+ b,pt %xcc, 2f
+ mov %i4, %o4
+
+
+ /* Linux 32-bit and SunOS system calls enter here... */
+ .align 32
+ .globl linux_sparc_syscall32
+linux_sparc_syscall32:
+ /* Direct access to user regs, must faster. */
+ cmp %g1, NR_SYSCALLS ! IEU1 Group
+ bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
+ srl %i0, 0, %o0 ! IEU0
+ sll %g1, 2, %l4 ! IEU0 Group
+#ifdef SYSCALL_TRACING
+ add %sp, STACK_BIAS + REGWIN_SZ, %o1
+ call syscall_trace_entry
+ mov %g1, %o0
+ srl %i0, 0, %o0
+#endif
+ mov %i4, %o4 ! IEU1
+ lduw [%l7 + %l4], %l7 ! Load
+ srl %i1, 0, %o1 ! IEU0 Group
+ ldx [%curptr + AOFF_task_flags], %l0 ! Load
+
+ mov %i5, %o5 ! IEU1
+ srl %i2, 0, %o2 ! IEU0 Group
+ mov %i0, %l5 ! IEU1
+ andcc %l0, 0x20, %g0 ! IEU1 Group
+ bne,pn %icc, linux_syscall_trace32 ! CTI
+ srl %i3, 0, %o3 ! IEU0
+ call %l7 ! CTI Group brk forced
+ add %o7, 3f-.-4, %o7 ! IEU0
/* Linux native and SunOS system calls enter here... */
.align 32
- .globl linux_sparc_syscall, syscall_is_too_hard, ret_sys_call
+ .globl linux_sparc_syscall, ret_sys_call
linux_sparc_syscall:
/* Direct access to user regs, must faster. */
cmp %g1, NR_SYSCALLS ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
mov %i0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
+#ifdef SYSCALL_TRACING
+ add %sp, STACK_BIAS + REGWIN_SZ, %o1
+ call syscall_trace_entry
+ mov %g1, %o0
+ mov %i0, %o0
+#endif
mov %i1, %o1 ! IEU1
lduw [%l7 + %l4], %l7 ! Load
-syscall_is_too_hard:
- mov %i2, %o2 ! IEU0 Group
- ldx [%curptr + AOFF_task_flags], %l5 ! Load
+4: mov %i2, %o2 ! IEU0 Group
+ ldx [%curptr + AOFF_task_flags], %l0 ! Load
- st %g0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_FPRS]
mov %i3, %o3 ! IEU1
mov %i4, %o4 ! IEU0 Group
- andcc %l5, 0x20, %g0 ! IEU1 2 bubbles
+ andcc %l0, 0x20, %g0 ! IEU1 Group+1 bubble
bne,pn %icc, linux_syscall_trace ! CTI Group
mov %i0, %l5 ! IEU0
2: call %l7 ! CTI Group brk forced
mov %i5, %o5 ! IEU0
- stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0]
-
+3: stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0]
ret_sys_call:
+#ifdef SYSCALL_TRACING
+ call syscall_trace_exit
+ add %sp, STACK_BIAS + REGWIN_SZ, %o1
+#endif
ldx [%curptr + AOFF_task_flags], %l6
sra %o0, 0, %o0
mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 16:12:25 +0000