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authorMax Filippov <jcmvbkbc@gmail.com>2017-12-09 21:18:47 -0800
committerMax Filippov <jcmvbkbc@gmail.com>2017-12-10 14:48:53 -0800
commit0013aceb307482ba83a5b6a29f6ba1791be0d32b (patch)
tree63f0312a68e62d0f52212ce7bdab9d75e4ee6ead /arch/xtensa/kernel
parent2da03d4114b2587f0e8e45f4862074e34daee64e (diff)
xtensa: clean up fixups in assembly code
Remove duplicate definitions of EX() and similar TRY/CATCH and SRC/DST macros from assembly sources and put single definition into asm/asmmacro.h Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/kernel')
-rw-r--r--arch/xtensa/kernel/entry.S33
1 files changed, 5 insertions, 28 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 5a2110bb5902..a27a9a65635b 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -14,6 +14,7 @@
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
+#include <asm/asmmacro.h>
#include <asm/processor.h>
#include <asm/coprocessor.h>
#include <asm/thread_info.h>
@@ -1094,35 +1095,12 @@ ENDPROC(fast_syscall_unrecoverable)
* < VALID_DOUBLE_EXCEPTION_ADDRESS: regular exception
*
* Note: we don't have to save a2; a2 holds the return value
- *
- * We use the two macros TRY and CATCH:
- *
- * TRY adds an entry to the __ex_table fixup table for the immediately
- * following instruction.
- *
- * CATCH catches any exception that occurred at one of the preceding TRY
- * statements and continues from there
- *
- * Usage TRY l32i a0, a1, 0
- * <other code>
- * done: rfe
- * CATCH <set return code>
- * j done
*/
.literal_position
#ifdef CONFIG_FAST_SYSCALL_XTENSA
-#define TRY \
- .section __ex_table, "a"; \
- .word 66f, 67f; \
- .text; \
-66:
-
-#define CATCH \
-67:
-
ENTRY(fast_syscall_xtensa)
s32i a7, a2, PT_AREG7 # we need an additional register
@@ -1136,9 +1114,9 @@ ENTRY(fast_syscall_xtensa)
.Lswp: /* Atomic compare and swap */
-TRY l32i a0, a3, 0 # read old value
+EX(.Leac) l32i a0, a3, 0 # read old value
bne a0, a4, 1f # same as old value? jump
-TRY s32i a5, a3, 0 # different, modify value
+EX(.Leac) s32i a5, a3, 0 # different, modify value
l32i a7, a2, PT_AREG7 # restore a7
l32i a0, a2, PT_AREG0 # restore a0
movi a2, 1 # and return 1
@@ -1151,12 +1129,12 @@ TRY s32i a5, a3, 0 # different, modify value
.Lnswp: /* Atomic set, add, and exg_add. */
-TRY l32i a7, a3, 0 # orig
+EX(.Leac) l32i a7, a3, 0 # orig
addi a6, a6, -SYS_XTENSA_ATOMIC_SET
add a0, a4, a7 # + arg
moveqz a0, a4, a6 # set
addi a6, a6, SYS_XTENSA_ATOMIC_SET
-TRY s32i a0, a3, 0 # write new value
+EX(.Leac) s32i a0, a3, 0 # write new value
mov a0, a2
mov a2, a7
@@ -1164,7 +1142,6 @@ TRY s32i a0, a3, 0 # write new value
l32i a0, a0, PT_AREG0 # restore a0
rfe
-CATCH
.Leac: l32i a7, a2, PT_AREG7 # restore a7
l32i a0, a2, PT_AREG0 # restore a0
movi a2, -EFAULT