diff options
Diffstat (limited to 'arch/arc/mm/tlbex.S')
| -rw-r--r-- | arch/arc/mm/tlbex.S | 44 |
1 files changed, 27 insertions, 17 deletions
diff --git a/arch/arc/mm/tlbex.S b/arch/arc/mm/tlbex.S index d572f1c2c..f6f4c3cb5 100644 --- a/arch/arc/mm/tlbex.S +++ b/arch/arc/mm/tlbex.S @@ -35,8 +35,6 @@ * Rahul Trivedi, Amit Bhor: Codito Technologies 2004 */ - .cpu A7 - #include <linux/linkage.h> #include <asm/entry.h> #include <asm/mmu.h> @@ -46,6 +44,7 @@ #include <asm/processor.h> #include <asm/tlb-mmu1.h> +#ifdef CONFIG_ISA_ARCOMPACT ;----------------------------------------------------------------- ; ARC700 Exception Handling doesn't auto-switch stack and it only provides ; ONE scratch AUX reg "ARC_REG_SCRATCH_DATA0" @@ -123,6 +122,24 @@ ex_saved_reg1: #endif .endm +#else /* ARCv2 */ + +.macro TLBMISS_FREEUP_REGS + PUSH r0 + PUSH r1 + PUSH r2 + PUSH r3 +.endm + +.macro TLBMISS_RESTORE_REGS + POP r3 + POP r2 + POP r1 + POP r0 +.endm + +#endif + ;============================================================================ ; Troubleshooting Stuff ;============================================================================ @@ -241,6 +258,7 @@ ex_saved_reg1: ; Commit the TLB entry into MMU .macro COMMIT_ENTRY_TO_MMU +#if (CONFIG_ARC_MMU_VER < 4) /* Get free TLB slot: Set = computed from vaddr, way = random */ sr TLBGetIndex, [ARC_REG_TLBCOMMAND] @@ -251,6 +269,10 @@ ex_saved_reg1: #else sr TLBWrite, [ARC_REG_TLBCOMMAND] #endif + +#else + sr TLBInsertEntry, [ARC_REG_TLBCOMMAND] +#endif .endm @@ -291,6 +313,7 @@ ENTRY(EV_TLBMissI) CONV_PTE_TO_TLB COMMIT_ENTRY_TO_MMU TLBMISS_RESTORE_REGS +EV_TLBMissI_fast_ret: ; additional label for VDK OS-kit instrumentation rtie END(EV_TLBMissI) @@ -356,6 +379,7 @@ ENTRY(EV_TLBMissD) COMMIT_ENTRY_TO_MMU TLBMISS_RESTORE_REGS +EV_TLBMissD_fast_ret: ; additional label for VDK OS-kit instrumentation rtie ;-------- Common routine to call Linux Page Fault Handler ----------- @@ -366,19 +390,5 @@ do_slow_path_pf: ; Slow path TLB Miss handled as a regular ARC Exception ; (stack switching / save the complete reg-file). - EXCEPTION_PROLOGUE - - ; ------- setup args for Linux Page fault Hanlder --------- - mov_s r1, sp - lr r0, [efa] - - ; We don't want exceptions to be disabled while the fault is handled. - ; Now that we have saved the context we return from exception hence - ; exceptions get re-enable - - FAKE_RET_FROM_EXCPN r9 - - bl do_page_fault - b ret_from_exception - + b call_do_page_fault END(EV_TLBMissD) |