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-rw-r--r--arch/blackfin/kernel/fixed_code.S155
1 files changed, 0 insertions, 155 deletions
diff --git a/arch/blackfin/kernel/fixed_code.S b/arch/blackfin/kernel/fixed_code.S
deleted file mode 100644
index 0565917f23ba..000000000000
--- a/arch/blackfin/kernel/fixed_code.S
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * This file contains sequences of code that will be copied to a
- * fixed location, defined in <asm/fixed_code.h>. The interrupt
- * handlers ensure that these sequences appear to be atomic when
- * executed from userspace.
- * These are aligned to 16 bytes, so that we have some space to replace
- * these sequences with something else (e.g. kernel traps if we ever do
- * BF561 SMP).
- *
- * Copyright 2007-2008 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <linux/unistd.h>
-#include <asm/entry.h>
-
-__INIT
-
-ENTRY(_fixed_code_start)
-
-.align 16
-ENTRY(_sigreturn_stub)
- P0 = __NR_rt_sigreturn;
- EXCPT 0;
- /* Speculative execution paranoia. */
-0: JUMP.S 0b;
-ENDPROC (_sigreturn_stub)
-
-.align 16
- /*
- * Atomic swap, 8 bit.
- * Inputs: P0: memory address to use
- * R1: value to store
- * Output: R0: old contents of the memory address, zero extended.
- */
-ENTRY(_atomic_xchg32)
- R0 = [P0];
- [P0] = R1;
- rts;
-ENDPROC (_atomic_xchg32)
-
-.align 16
- /*
- * Compare and swap, 32 bit.
- * Inputs: P0: memory address to use
- * R1: compare value
- * R2: new value to store
- * The new value is stored if the contents of the memory
- * address is equal to the compare value.
- * Output: R0: old contents of the memory address.
- */
-ENTRY(_atomic_cas32)
- R0 = [P0];
- CC = R0 == R1;
- IF !CC JUMP 1f;
- [P0] = R2;
-1:
- rts;
-ENDPROC (_atomic_cas32)
-
-.align 16
- /*
- * Atomic add, 32 bit.
- * Inputs: P0: memory address to use
- * R0: value to add
- * Outputs: R0: new contents of the memory address.
- * R1: previous contents of the memory address.
- */
-ENTRY(_atomic_add32)
- R1 = [P0];
- R0 = R1 + R0;
- [P0] = R0;
- rts;
-ENDPROC (_atomic_add32)
-
-.align 16
- /*
- * Atomic sub, 32 bit.
- * Inputs: P0: memory address to use
- * R0: value to subtract
- * Outputs: R0: new contents of the memory address.
- * R1: previous contents of the memory address.
- */
-ENTRY(_atomic_sub32)
- R1 = [P0];
- R0 = R1 - R0;
- [P0] = R0;
- rts;
-ENDPROC (_atomic_sub32)
-
-.align 16
- /*
- * Atomic ior, 32 bit.
- * Inputs: P0: memory address to use
- * R0: value to ior
- * Outputs: R0: new contents of the memory address.
- * R1: previous contents of the memory address.
- */
-ENTRY(_atomic_ior32)
- R1 = [P0];
- R0 = R1 | R0;
- [P0] = R0;
- rts;
-ENDPROC (_atomic_ior32)
-
-.align 16
- /*
- * Atomic and, 32 bit.
- * Inputs: P0: memory address to use
- * R0: value to and
- * Outputs: R0: new contents of the memory address.
- * R1: previous contents of the memory address.
- */
-ENTRY(_atomic_and32)
- R1 = [P0];
- R0 = R1 & R0;
- [P0] = R0;
- rts;
-ENDPROC (_atomic_and32)
-
-.align 16
- /*
- * Atomic xor, 32 bit.
- * Inputs: P0: memory address to use
- * R0: value to xor
- * Outputs: R0: new contents of the memory address.
- * R1: previous contents of the memory address.
- */
-ENTRY(_atomic_xor32)
- R1 = [P0];
- R0 = R1 ^ R0;
- [P0] = R0;
- rts;
-ENDPROC (_atomic_xor32)
-
-.align 16
- /*
- * safe_user_instruction
- * Four NOPS are enough to allow the pipeline to speculativily load
- * execute anything it wants. After that, things have gone bad, and
- * we are stuck - so panic. Since we might be in user space, we can't
- * call panic, so just cause a unhandled exception, this should cause
- * a dump of the trace buffer so we can tell were we are, and a reboot
- */
-ENTRY(_safe_user_instruction)
- NOP; NOP; NOP; NOP;
- EXCPT 0x4;
-ENDPROC(_safe_user_instruction)
-
-ENTRY(_fixed_code_end)
-
-__FINIT
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