我正在尝试为 iPhone 编译Tremolo。我已经提取了文件 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 .c res012.c 进入一个新的目标,添加了以下自定义设置:
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,我就会收到如下错误:
/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]'
我可以用谷歌搜索的第一个错误,将 .global 更改为 .globl 修复了第一个错误,但我仍然得到错误的指示,我不明白为什么。谷歌搜索 ARM 指令集,上面的指令对我来说是有效的。我试过切换拇指支持,只为 armv7 而不是 armv6 构建,但都没有帮助。