diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2017-12-09 21:18:47 -0800 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2017-12-10 14:48:53 -0800 |
| commit | 0013aceb307482ba83a5b6a29f6ba1791be0d32b (patch) | |
| tree | 63f0312a68e62d0f52212ce7bdab9d75e4ee6ead /arch/xtensa/lib/strnlen_user.S | |
| parent | 2da03d4114b2587f0e8e45f4862074e34daee64e (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/lib/strnlen_user.S')
| -rw-r--r-- | arch/xtensa/lib/strnlen_user.S | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/arch/xtensa/lib/strnlen_user.S b/arch/xtensa/lib/strnlen_user.S index 4c03b1e581e9..9404ac46ce4c 100644 --- a/arch/xtensa/lib/strnlen_user.S +++ b/arch/xtensa/lib/strnlen_user.S @@ -12,14 +12,7 @@ */ #include <variant/core.h> - -/* Load or store instructions that may cause exceptions use the EX macro. */ - -#define EX(insn,reg1,reg2,offset,handler) \ -9: insn reg1, reg2, offset; \ - .section __ex_table, "a"; \ - .word 9b, handler; \ - .previous +#include <asm/asmmacro.h> /* * size_t __strnlen_user(const char *s, size_t len) @@ -77,7 +70,7 @@ __strnlen_user: add a10, a10, a4 # a10 = end of last 4B chunk #endif /* XCHAL_HAVE_LOOPS */ .Loop: - EX(l32i, a9, a4, 4, lenfixup) # get next word of string +EX(10f) l32i a9, a4, 4 # get next word of string addi a4, a4, 4 # advance string pointer bnone a9, a5, .Lz0 # if byte 0 is zero bnone a9, a6, .Lz1 # if byte 1 is zero @@ -88,7 +81,7 @@ __strnlen_user: #endif .Ldone: - EX(l32i, a9, a4, 4, lenfixup) # load 4 bytes for remaining checks +EX(10f) l32i a9, a4, 4 # load 4 bytes for remaining checks bbci.l a3, 1, .L100 # check two more bytes (bytes 0, 1 of word) @@ -125,14 +118,14 @@ __strnlen_user: retw .L1mod2: # address is odd - EX(l8ui, a9, a4, 4, lenfixup) # get byte 0 +EX(10f) l8ui a9, a4, 4 # get byte 0 addi a4, a4, 1 # advance string pointer beqz a9, .Lz3 # if byte 0 is zero bbci.l a4, 1, .Laligned # if string pointer is now word-aligned .L2mod4: # address is 2 mod 4 addi a4, a4, 2 # advance ptr for aligned access - EX(l32i, a9, a4, 0, lenfixup) # get word with first two bytes of string +EX(10f) l32i a9, a4, 0 # get word with first two bytes of string bnone a9, a7, .Lz2 # if byte 2 (of word, not string) is zero bany a9, a8, .Laligned # if byte 3 (of word, not string) is nonzero # byte 3 is zero @@ -142,6 +135,6 @@ __strnlen_user: .section .fixup, "ax" .align 4 -lenfixup: +10: movi a2, 0 retw |