#include <linux/linkage.h>
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
-#include <asm/cpu/mmu_context.h>
#include <asm/unistd.h>
+#include <cpu/mmu_context.h>
+#include <asm/page.h>
! NOTE:
! GNU as (as of 2.9.1) changes bf/s into bt/s and bra, when the address
lds r10, pr
rts
nop
-0: sti
- mov.l 3f, r0
+0: mov.l 3f, r0
mov r9, r6
mov r8, r5
jmp @r0
general_exception:
mov.l 1f, k2
mov.l 2f, k3
+#ifdef CONFIG_CPU_SUBTYPE_SHX3
+ mov.l @k2, k2
+
+ ! Is EXPEVT larger than 0x800?
+ mov #0x8, k0
+ shll8 k0
+ cmp/hs k0, k2
+ bf 0f
+
+ ! then add 0x580 (k2 is 0xd80 or 0xda0)
+ mov #0x58, k0
+ shll2 k0
+ shll2 k0
+ add k0, k2
+0:
+ bra handle_exception
+ nop
+#else
bra handle_exception
mov.l @k2, k2
+#endif
.align 2
1: .long EXPEVT
2: .long ret_from_exception
! Using k0, k1 for scratch registers (r0_bank1, r1_bank),
! save all registers onto stack.
!
+
+#ifdef CONFIG_GUSA
+ ! Check for roll back gRB (User and Kernel)
+ mov r15, k0
+ shll k0
+ bf/s 1f
+ shll k0
+ bf/s 1f
+ stc spc, k1
+ stc r0_bank, k0
+ cmp/hs k0, k1 ! test k1 (saved PC) >= k0 (saved r0)
+ bt/s 2f
+ stc r1_bank, k1
+
+ add #-2, k0
+ add r15, k0
+ ldc k0, spc ! PC = saved r0 + r15 - 2
+2: mov k1, r15 ! SP = r1
+1:
+#endif
+
stc ssr, k0 ! Is it from kernel space?
shll k0 ! Check MD bit (bit30) by shifting it into...
shll k0 ! ...the T bit