mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
a88b5ba8bd
o Move all files from sparc64/kernel/ to sparc/kernel - rename as appropriate o Update sparc/Makefile to the changes o Update sparc/kernel/Makefile to include the sparc64 files NOTE: This commit changes link order on sparc64! Link order had to change for either of sparc32 and sparc64. And assuming sparc64 see more testing than sparc32 change link order on sparc64 where issues will be caught faster. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
157 lines
3.8 KiB
ArmAsm
157 lines
3.8 KiB
ArmAsm
/* winfixup.S: Handle cases where user stack pointer is found to be bogus.
|
|
*
|
|
* Copyright (C) 1997, 2006 David S. Miller (davem@davemloft.net)
|
|
*/
|
|
|
|
#include <asm/asi.h>
|
|
#include <asm/head.h>
|
|
#include <asm/page.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/spitfire.h>
|
|
#include <asm/thread_info.h>
|
|
|
|
.text
|
|
|
|
/* It used to be the case that these register window fault
|
|
* handlers could run via the save and restore instructions
|
|
* done by the trap entry and exit code. They now do the
|
|
* window spill/fill by hand, so that case no longer can occur.
|
|
*/
|
|
|
|
.align 32
|
|
fill_fixup:
|
|
TRAP_LOAD_THREAD_REG(%g6, %g1)
|
|
rdpr %tstate, %g1
|
|
and %g1, TSTATE_CWP, %g1
|
|
or %g4, FAULT_CODE_WINFIXUP, %g4
|
|
stb %g4, [%g6 + TI_FAULT_CODE]
|
|
stx %g5, [%g6 + TI_FAULT_ADDR]
|
|
wrpr %g1, %cwp
|
|
ba,pt %xcc, etrap
|
|
rd %pc, %g7
|
|
call do_sparc64_fault
|
|
add %sp, PTREGS_OFF, %o0
|
|
ba,pt %xcc, rtrap
|
|
nop
|
|
|
|
/* Be very careful about usage of the trap globals here.
|
|
* You cannot touch %g5 as that has the fault information.
|
|
*/
|
|
spill_fixup:
|
|
spill_fixup_mna:
|
|
spill_fixup_dax:
|
|
TRAP_LOAD_THREAD_REG(%g6, %g1)
|
|
ldx [%g6 + TI_FLAGS], %g1
|
|
andcc %g1, _TIF_32BIT, %g0
|
|
ldub [%g6 + TI_WSAVED], %g1
|
|
sll %g1, 3, %g3
|
|
add %g6, %g3, %g3
|
|
stx %sp, [%g3 + TI_RWIN_SPTRS]
|
|
sll %g1, 7, %g3
|
|
bne,pt %xcc, 1f
|
|
add %g6, %g3, %g3
|
|
stx %l0, [%g3 + TI_REG_WINDOW + 0x00]
|
|
stx %l1, [%g3 + TI_REG_WINDOW + 0x08]
|
|
stx %l2, [%g3 + TI_REG_WINDOW + 0x10]
|
|
stx %l3, [%g3 + TI_REG_WINDOW + 0x18]
|
|
stx %l4, [%g3 + TI_REG_WINDOW + 0x20]
|
|
stx %l5, [%g3 + TI_REG_WINDOW + 0x28]
|
|
stx %l6, [%g3 + TI_REG_WINDOW + 0x30]
|
|
stx %l7, [%g3 + TI_REG_WINDOW + 0x38]
|
|
stx %i0, [%g3 + TI_REG_WINDOW + 0x40]
|
|
stx %i1, [%g3 + TI_REG_WINDOW + 0x48]
|
|
stx %i2, [%g3 + TI_REG_WINDOW + 0x50]
|
|
stx %i3, [%g3 + TI_REG_WINDOW + 0x58]
|
|
stx %i4, [%g3 + TI_REG_WINDOW + 0x60]
|
|
stx %i5, [%g3 + TI_REG_WINDOW + 0x68]
|
|
stx %i6, [%g3 + TI_REG_WINDOW + 0x70]
|
|
ba,pt %xcc, 2f
|
|
stx %i7, [%g3 + TI_REG_WINDOW + 0x78]
|
|
1: stw %l0, [%g3 + TI_REG_WINDOW + 0x00]
|
|
stw %l1, [%g3 + TI_REG_WINDOW + 0x04]
|
|
stw %l2, [%g3 + TI_REG_WINDOW + 0x08]
|
|
stw %l3, [%g3 + TI_REG_WINDOW + 0x0c]
|
|
stw %l4, [%g3 + TI_REG_WINDOW + 0x10]
|
|
stw %l5, [%g3 + TI_REG_WINDOW + 0x14]
|
|
stw %l6, [%g3 + TI_REG_WINDOW + 0x18]
|
|
stw %l7, [%g3 + TI_REG_WINDOW + 0x1c]
|
|
stw %i0, [%g3 + TI_REG_WINDOW + 0x20]
|
|
stw %i1, [%g3 + TI_REG_WINDOW + 0x24]
|
|
stw %i2, [%g3 + TI_REG_WINDOW + 0x28]
|
|
stw %i3, [%g3 + TI_REG_WINDOW + 0x2c]
|
|
stw %i4, [%g3 + TI_REG_WINDOW + 0x30]
|
|
stw %i5, [%g3 + TI_REG_WINDOW + 0x34]
|
|
stw %i6, [%g3 + TI_REG_WINDOW + 0x38]
|
|
stw %i7, [%g3 + TI_REG_WINDOW + 0x3c]
|
|
2: add %g1, 1, %g1
|
|
stb %g1, [%g6 + TI_WSAVED]
|
|
rdpr %tstate, %g1
|
|
andcc %g1, TSTATE_PRIV, %g0
|
|
saved
|
|
be,pn %xcc, 1f
|
|
and %g1, TSTATE_CWP, %g1
|
|
retry
|
|
1: mov FAULT_CODE_WRITE | FAULT_CODE_DTLB | FAULT_CODE_WINFIXUP, %g4
|
|
stb %g4, [%g6 + TI_FAULT_CODE]
|
|
stx %g5, [%g6 + TI_FAULT_ADDR]
|
|
wrpr %g1, %cwp
|
|
ba,pt %xcc, etrap
|
|
rd %pc, %g7
|
|
call do_sparc64_fault
|
|
add %sp, PTREGS_OFF, %o0
|
|
ba,a,pt %xcc, rtrap
|
|
|
|
winfix_mna:
|
|
andn %g3, 0x7f, %g3
|
|
add %g3, 0x78, %g3
|
|
wrpr %g3, %tnpc
|
|
done
|
|
|
|
fill_fixup_mna:
|
|
rdpr %tstate, %g1
|
|
and %g1, TSTATE_CWP, %g1
|
|
wrpr %g1, %cwp
|
|
ba,pt %xcc, etrap
|
|
rd %pc, %g7
|
|
sethi %hi(tlb_type), %g1
|
|
lduw [%g1 + %lo(tlb_type)], %g1
|
|
cmp %g1, 3
|
|
bne,pt %icc, 1f
|
|
add %sp, PTREGS_OFF, %o0
|
|
mov %l4, %o2
|
|
call sun4v_do_mna
|
|
mov %l5, %o1
|
|
ba,a,pt %xcc, rtrap
|
|
1: mov %l4, %o1
|
|
mov %l5, %o2
|
|
call mem_address_unaligned
|
|
nop
|
|
ba,a,pt %xcc, rtrap
|
|
|
|
winfix_dax:
|
|
andn %g3, 0x7f, %g3
|
|
add %g3, 0x74, %g3
|
|
wrpr %g3, %tnpc
|
|
done
|
|
|
|
fill_fixup_dax:
|
|
rdpr %tstate, %g1
|
|
and %g1, TSTATE_CWP, %g1
|
|
wrpr %g1, %cwp
|
|
ba,pt %xcc, etrap
|
|
rd %pc, %g7
|
|
sethi %hi(tlb_type), %g1
|
|
mov %l4, %o1
|
|
lduw [%g1 + %lo(tlb_type)], %g1
|
|
mov %l5, %o2
|
|
cmp %g1, 3
|
|
bne,pt %icc, 1f
|
|
add %sp, PTREGS_OFF, %o0
|
|
call sun4v_data_access_exception
|
|
nop
|
|
ba,a,pt %xcc, rtrap
|
|
1: call spitfire_data_access_exception
|
|
nop
|
|
ba,a,pt %xcc, rtrap
|