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调用x264中arm汇编文件arm.S文件，编译报错

siman over 9 years ago

我想调用x264中的arm.S文件，我创建了一个test.S文件，在改文件中定义如下：

#include "asm.S"

.text

function x264_prefetch_ref_arm

sub r2, r2, #1

add r0, r0, #64

and r2, r2, r1

add r0, r0, r2, lsl #3

add r2, r1, r1, lsl #1

pld [r0]

pld [r0, r1]

pld [r0, r1, lsl #1]

add r3, r0, r1, lsl #2

pld [r0, r2]

pld [r3]

pld [r3, r1]

pld [r3, r1, lsl #1]

pld [r3, r2]

bx lr

endfunc

编译的时候报错：

bad instruction `endfunc'

bad instruction `function x264_prefetch_ref_arm'

这个是跟编译器有关系吗？

我用的是的linaro编译器gcc-linaro-arm-linux-gnueabihf-4.9-2014.09。

另外有个疑问，汇编中直接使用#include<>的对吗？不是应该用.include<>吗？

我吧#改成.后，发现编译错误又变成：

bad instruction `elf .hidden EXTERN_ASMx264_prefetch_ref_arm'

bad instruction `elf .size x264_prefetch_ref_arm,.-x264_prefetch_ref_arm'

bad instruction `elf .type EXTERN_ASMx264_prefetch_ref_arm,%function'

bad instruction `func .endfunc'

bad instruction `func .func EXTERN_ASMx264_prefetch_ref_arm'

麻烦帮我解答下，谢谢。

Parents

0 siman over 9 years ago in reply to steven

不好意思, 我说的是x264里面的asm.S, 我说成 arm.S了，asm.S全部内容：
#include "config.h"
.syntax unified
#if   HAVE_NEON
        .arch           armv7-a
#elif HAVE_ARMV6T2
        .arch           armv6t2
#elif HAVE_ARMV6
        .arch           armv6
#endif
.fpu neon
#ifdef PREFIX
#   define EXTERN_ASM _
#else
#   define EXTERN_ASM
#endif
#ifdef __ELF__
#   define ELF
#else
#   define ELF @
#endif
#if HAVE_AS_FUNC
#   define FUNC
#else
#   define FUNC @
#endif
.macro require8, val=1
ELF     .eabi_attribute 24, \val
.endm
.macro preserve8, val=1
ELF     .eabi_attribute 25, \val
.endm
.macro function name, export=1
    .macro endfunc
ELF     .size   \name, . - \name
FUNC    .endfunc
        .purgem endfunc
    .endm
        .align 2
.if \export == 1
        .global EXTERN_ASM\name
ELF     .hidden EXTERN_ASM\name
ELF     .type   EXTERN_ASM\name, %function
FUNC    .func   EXTERN_ASM\name
EXTERN_ASM\name:
.else
ELF     .hidden \name
ELF     .type   \name, %function
FUNC    .func   \name
\name:
.endif
.endm
.macro movrel rd, val
#if HAVE_ARMV6T2 && !defined(PIC)
        movw            \rd, #:lower16:\val
        movt            \rd, #:upper16:\val
#else
        ldr             \rd, =\val
#endif
.endm
.macro movconst rd, val
#if HAVE_ARMV6T2
    movw        \rd, #:lower16:\val
.if \val >> 16
    movt        \rd, #:upper16:\val
.endif
#else
    ldr         \rd, =\val
#endif
.endm
#define GLUE(a, b) a ## b
#define JOIN(a, b) GLUE(a, b)
#define X(s) JOIN(EXTERN_ASM, s)
#define FENC_STRIDE 16
#define FDEC_STRIDE 32
.macro HORIZ_ADD dest, a, b
.ifnb \b
    vadd.u16    \a, \a, \b
.endif
    vpaddl.u16 \a, \a
    vpaddl.u32 \dest, \a
.endm
.macro SUMSUB_AB sum, diff, a, b
    vadd.s16    \sum, \a, \b
    vsub.s16    \diff, \a, \b
.endm
.macro SUMSUB_ABCD s1, d1, s2, d2, a, b, c, d
    SUMSUB_AB   \s1, \d1, \a, \b
    SUMSUB_AB   \s2, \d2, \c, \d
.endm
.macro ABS2 a b
    vabs.s16 \a, \a
    vabs.s16 \b, \b
.endm
// dist = distance in elements (0 for vertical pass, 1/2 for horizontal passes)
// op = sumsub/amax (sum and diff / maximum of absolutes)
// d1/2 = destination registers
// s1/2 = source registers
.macro HADAMARD dist, op, d1, d2, s1, s2
.if \dist == 1
    vtrn.16     \s1, \s2
.else
    vtrn.32     \s1, \s2
.endif
.ifc \op, sumsub
    SUMSUB_AB   \d1, \d2, \s1, \s2
.else
    vabs.s16    \s1, \s1
    vabs.s16    \s2, \s2
    vmax.s16    \d1, \s1, \s2
.endif
.endm
.macro TRANSPOSE8x8 r0 r1 r2 r3 r4 r5 r6 r7
    vtrn.32         \r0, \r4
    vtrn.32         \r1, \r5
    vtrn.32         \r2, \r6
    vtrn.32         \r3, \r7
    vtrn.16         \r0, \r2
    vtrn.16         \r1, \r3
    vtrn.16         \r4, \r6
    vtrn.16         \r5, \r7
    vtrn.8          \r0, \r1
    vtrn.8          \r2, \r3
    vtrn.8          \r4, \r5
    vtrn.8          \r6, \r7
.endm
.macro TRANSPOSE4x4 r0 r1 r2 r3
    vtrn.16         \r0, \r2
    vtrn.16         \r1, \r3
    vtrn.8          \r0, \r1
    vtrn.8          \r2, \r3
.endm
.macro TRANSPOSE4x4_16 d0 d1 d2 d3
    vtrn.32     \d0, \d2
    vtrn.32     \d1, \d3
    vtrn.16     \d0, \d1
    vtrn.16     \d2, \d3
.endm
Re: 调用x264中arm汇编文件arm.S文件，编译报错
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0 siman over 9 years ago in reply to steven

不好意思, 我说的是x264里面的asm.S, 我说成 arm.S了，asm.S全部内容：
#include "config.h"
.syntax unified
#if   HAVE_NEON
        .arch           armv7-a
#elif HAVE_ARMV6T2
        .arch           armv6t2
#elif HAVE_ARMV6
        .arch           armv6
#endif
.fpu neon
#ifdef PREFIX
#   define EXTERN_ASM _
#else
#   define EXTERN_ASM
#endif
#ifdef __ELF__
#   define ELF
#else
#   define ELF @
#endif
#if HAVE_AS_FUNC
#   define FUNC
#else
#   define FUNC @
#endif
.macro require8, val=1
ELF     .eabi_attribute 24, \val
.endm
.macro preserve8, val=1
ELF     .eabi_attribute 25, \val
.endm
.macro function name, export=1
    .macro endfunc
ELF     .size   \name, . - \name
FUNC    .endfunc
        .purgem endfunc
    .endm
        .align 2
.if \export == 1
        .global EXTERN_ASM\name
ELF     .hidden EXTERN_ASM\name
ELF     .type   EXTERN_ASM\name, %function
FUNC    .func   EXTERN_ASM\name
EXTERN_ASM\name:
.else
ELF     .hidden \name
ELF     .type   \name, %function
FUNC    .func   \name
\name:
.endif
.endm
.macro movrel rd, val
#if HAVE_ARMV6T2 && !defined(PIC)
        movw            \rd, #:lower16:\val
        movt            \rd, #:upper16:\val
#else
        ldr             \rd, =\val
#endif
.endm
.macro movconst rd, val
#if HAVE_ARMV6T2
    movw        \rd, #:lower16:\val
.if \val >> 16
    movt        \rd, #:upper16:\val
.endif
#else
    ldr         \rd, =\val
#endif
.endm
#define GLUE(a, b) a ## b
#define JOIN(a, b) GLUE(a, b)
#define X(s) JOIN(EXTERN_ASM, s)
#define FENC_STRIDE 16
#define FDEC_STRIDE 32
.macro HORIZ_ADD dest, a, b
.ifnb \b
    vadd.u16    \a, \a, \b
.endif
    vpaddl.u16 \a, \a
    vpaddl.u32 \dest, \a
.endm
.macro SUMSUB_AB sum, diff, a, b
    vadd.s16    \sum, \a, \b
    vsub.s16    \diff, \a, \b
.endm
.macro SUMSUB_ABCD s1, d1, s2, d2, a, b, c, d
    SUMSUB_AB   \s1, \d1, \a, \b
    SUMSUB_AB   \s2, \d2, \c, \d
.endm
.macro ABS2 a b
    vabs.s16 \a, \a
    vabs.s16 \b, \b
.endm
// dist = distance in elements (0 for vertical pass, 1/2 for horizontal passes)
// op = sumsub/amax (sum and diff / maximum of absolutes)
// d1/2 = destination registers
// s1/2 = source registers
.macro HADAMARD dist, op, d1, d2, s1, s2
.if \dist == 1
    vtrn.16     \s1, \s2
.else
    vtrn.32     \s1, \s2
.endif
.ifc \op, sumsub
    SUMSUB_AB   \d1, \d2, \s1, \s2
.else
    vabs.s16    \s1, \s1
    vabs.s16    \s2, \s2
    vmax.s16    \d1, \s1, \s2
.endif
.endm
.macro TRANSPOSE8x8 r0 r1 r2 r3 r4 r5 r6 r7
    vtrn.32         \r0, \r4
    vtrn.32         \r1, \r5
    vtrn.32         \r2, \r6
    vtrn.32         \r3, \r7
    vtrn.16         \r0, \r2
    vtrn.16         \r1, \r3
    vtrn.16         \r4, \r6
    vtrn.16         \r5, \r7
    vtrn.8          \r0, \r1
    vtrn.8          \r2, \r3
    vtrn.8          \r4, \r5
    vtrn.8          \r6, \r7
.endm
.macro TRANSPOSE4x4 r0 r1 r2 r3
    vtrn.16         \r0, \r2
    vtrn.16         \r1, \r3
    vtrn.8          \r0, \r1
    vtrn.8          \r2, \r3
.endm
.macro TRANSPOSE4x4_16 d0 d1 d2 d3
    vtrn.32     \d0, \d2
    vtrn.32     \d1, \d3
    vtrn.16     \d0, \d1
    vtrn.16     \d2, \d3
.endm
Re: 调用x264中arm汇编文件arm.S文件，编译报错
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