为iPhone构建ARM汇编程序vorbis解码器lib'Tremolo'

Question

我正在尝试为iPhone 编译Tremolo.我已经把文件拉进了bitwise.c bitwiseARM.s codebook.c dpen.s dsp.c floor0.c floor1.c floor1ARM.s floor_lookup.c framing.c info.c mapping0.c mdct.c mdctARM.s misc将.c res012.c转换为新目标,添加以下自定义设置:

GCC_PREPROCESSOR_DEFINITIONS = _ARM_ASSEM_
GCC_C_LANGUAGE_STANDARD = gnu99
GCC_THUMB_SUPPORT = YES

...但是一旦xcode到达第一个汇编程序文件bitwiseARM.s,就会出现如下错误:

/tremolo/bitwiseARM.s:3:Unknown pseudo-op: .global
/tremolo/bitwiseARM.s:3:Rest of line ignored. 1st junk character valued 111 (o).
/tremolo/bitwiseARM.s:4:Unknown pseudo-op: .global
/tremolo/bitwiseARM.s:4:Rest of line ignored. 1st junk character valued 111 (o).
/tremolo/bitwiseARM.s:5:Unknown pseudo-op: .global
/tremolo/bitwiseARM.s:5:Rest of line ignored. 1st junk character valued 111 (o).
/tremolo/bitwiseARM.s:6:Unknown pseudo-op: .global
/tremolo/bitwiseARM.s:6:Rest of line ignored. 1st junk character valued 111 (o).
/tremolo/bitwiseARM.s:11:bad instruction `STMFD r13!,{r10,r11,r14}'
/tremolo/bitwiseARM.s:12:bad instruction `LDMIA r0,{r2,r3,r12}'
/tremolo/bitwiseARM.s:16:bad instruction `SUBS r2,r2,r1'
/tremolo/bitwiseARM.s:17:bad instruction `BLT look_slow'
/tremolo/bitwiseARM.s:19:bad instruction `LDR r10,[r3]'

我可以谷歌的第一个错误,并将.global更改为.globl修复了第一个错误,但我仍然得到错误的指令,我不明白为什么.谷歌搜索ARM指令集,上面的说明对我来说是有效的.我试过切换拇指支撑,只用armv7而不是armv6构建,但都没有帮助.

Answer 1

正如伊戈尔所说,苹果公司的天然气叉是古老的,并希望:

• .glob替换.globl
• 所有小写​​指令
• 替换';' 评论分隔符'@'
• 地址导入的存根标签

我为Tremolo .s文件编写了一个预处理器awk脚本,使它们可以被Xcode接受,我将通过Robin回馈.

或者,你可以试试这个.