CMake Assembler Errors: unrecognized opcode:func_export / unsupported relocation

[Mike090]

(1) I'm getting CMake ARM assembler errors such as:

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    testing.s:137: Error: unrecognized opcode: 'func_export(testing)'
    testing.s:146: Error: unrecognized opcode: 'func_begin(testing)'
    testing.s:217: Error: unrecognized opcode: 'func_end(testing)'
    testing.s:149: Error: unsupported relocation against r3
    testing.s:162: Error: unsupported relocation against r4
    testing.s:187: Error: unsupported relocation against r5

(2) Question: What can I do about these errors?

My assembly code (in file testing.s) looks something like the following code. I've removed a lot of it and am trying to be concise.

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    #define _ASMLANGUAGE
    #include "vxWorks.h"
    #include <asm.h>

    FUNC_EXPORT(testing)
    .text
    .align 2
    .long 0
    .long 1
    .globl testing
    FUNC_BEGIN(testing)
    li r3, 1
    ori r4, r4, 0x6789
    srw r4, r4, r5
    FUNC_END(testing)

(3) My CMakeLists.txt looks something like:

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    cmake_minimum_required (VERSION 2.6)
    project(testing LANGUAGES CXX ASM)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -g -std=c++0x -Wextra -Wpedantic")
    set(dir3 .../.../.../util/dir3)
    add_executable(testing
    ${dir3}/one.cpp
    ${dir3}/testing.s
    )

(4) File one.cpp looks something such as:

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    extern "C" int testing(void);
    //...
    testing();
    //...

Thank you,

[hutch--]

Mike,

I am sorry but this forum is a MASM forum that only deal with x86 and x86-64 assemblers.

[LiaoMi]

(1) I'm getting CMake ARM assembler errors such as:

Code Select Expand

    testing.s:137: Error: unrecognized opcode: 'func_export(testing)'
    testing.s:146: Error: unrecognized opcode: 'func_begin(testing)'
    testing.s:217: Error: unrecognized opcode: 'func_end(testing)'
    testing.s:149: Error: unsupported relocation against r3
    testing.s:162: Error: unsupported relocation against r4
    testing.s:187: Error: unsupported relocation against r5

(2) Question: What can I do about these errors?

My assembly code (in file testing.s) looks something like the following code. I've removed a lot of it and am trying to be concise.

Code Select Expand

    #define _ASMLANGUAGE
    #include "vxWorks.h"
    #include <asm.h>

    FUNC_EXPORT(testing)
    .text
    .align 2
    .long 0
    .long 1
    .globl testing
    FUNC_BEGIN(testing)
    li r3, 1
    ori r4, r4, 0x6789
    srw r4, r4, r5
    FUNC_END(testing)

(3) My CMakeLists.txt looks something like:

Code Select Expand

    cmake_minimum_required (VERSION 2.6)
    project(testing LANGUAGES CXX ASM)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -g -std=c++0x -Wextra -Wpedantic")
    set(dir3 .../.../.../util/dir3)
    add_executable(testing
    ${dir3}/one.cpp
    ${dir3}/testing.s
    )

(4) File one.cpp looks something such as:

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    extern "C" int testing(void);
    //...
    testing();
    //...

Thank you,

Hi Mike090,

the FASMARM package is a free ARM cross-assembler add-on for FASM - http://arm.flatassembler.net/

Runs under Win32 (9x/NT/2K/XP/Vista/7/8/8.1/10) and LINUX. Plus a linkable object file for UNIX/LibC

FASMARM currently supports the full range of instructions for all 64-bit and 32-bit ARM processors and coprocessors up to v8.

FASMARM v1.43 - Cross assembler for ARM CPUs Forum - https://board.flatassembler.net/topic.php?t=4191

You can create a topic on the forum https://board.flatassembler.net/ 

[Mike090]

FYI: I just found out that I'm not working with ARM assembly. What I posted is the "intel" dialect of x86 assembly. Since I have to remove the assembler errors, I have to convert this "intel" dialect code to the x86 "att" dialect.

Question: Does anyone have any ideas on how to do this, statement by statement?

I tried adding "-s masm=att" to my CMake file but it did not work.  These options came from: https://stackoverflow.com/questions/199966/how-do-you-use-gcc-to-generate-assembly-code-in-intel-syntax

The following program is similar to my program. The below code does nothing. It's just a sequence of statements to show statements to convert to the "att" dialect of x86.

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#define _ASMLANGUAGE

#include "vxWorks.h"
#include <ash.h>

FUNC_EXPORT(testing)

.text
.align 2
.long 0
.long 1
.globl testing

FUNC_BEGIN(testing)

   li r3, 1
   ori r4, r4, 0x6789
   srw r4, r4, r5
   add    r4, r4, r3
   subi   r3, r3, 2
   cmplw r4, r5
   bne GOIT
FUNC_END(testing)

GOIT:


Is there a program on the Internet that converts from the "intel" style to the "AT&T" style? Does it have a detailed/good user manual that states how instructions are converted?

[LiaoMi]

FYI: I just found out that I'm not working with ARM assembly. What I posted is the "intel" dialect of x86 assembly. Since I have to remove the assembler errors, I have to convert this "intel" dialect code to the x86 "att" dialect.

Question: Does anyone have any ideas on how to do this, statement by statement?

I tried adding "-s masm=att" to my CMake file but it did not work.  These options came from: https://stackoverflow.com/questions/199966/how-do-you-use-gcc-to-generate-assembly-code-in-intel-syntax

The following program is similar to my program. The below code does nothing. It's just a sequence of statements to show statements to convert to the "att" dialect of x86.

Code Select Expand


#define _ASMLANGUAGE

#include "vxWorks.h"
#include <ash.h>

FUNC_EXPORT(testing)

.text
.align 2
.long 0
.long 1
.globl testing

FUNC_BEGIN(testing)

   li r3, 1
   ori r4, r4, 0x6789
   srw r4, r4, r5
   add    r4, r4, r3
   subi   r3, r3, 2
   cmplw r4, r5
   bne GOIT
FUNC_END(testing)

GOIT:


Is there a program on the Internet that converts from the "intel" style to the "AT&T" style? Does it have a detailed/good user manual that states how instructions are converted?

This is PowerPC assembler, but not x86

vasm A portable and retargetable assembler - http://sun.hasenbraten.de/vasm/
GNU

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powerpc-gcc someprog.c -static