271 insertions(+), 292 deletions(-), -21 lines, -5 files Also: - tccdefs.h: WIN32: less (no) __builtins - libtcc.c: simply ignore -arch
Showing the changes to lib/alloca.S (1 of 16 files). Show all
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| 1 | +/* ---------------------------------------------- */ | |
| 2 | +/* alloca.S */ | |
| 3 | + | |
| 4 | +#ifdef __leading_underscore | |
| 5 | +# define _(s) _##s | |
| 6 | +#else | |
| 7 | +# define _(s) s | |
| 8 | +#endif | |
| 9 | + | |
| 10 | +/* ---------------------------------------------- */ | |
| 11 | +#if defined __i386__ | |
| 12 | + | |
| 13 | +.globl _(alloca), _(__alloca) | |
| 14 | +_(alloca): | |
| 15 | +_(__alloca): | |
| 16 | + push %ebp | |
| 17 | + mov %esp,%ebp | |
| 18 | + mov 8(%ebp),%eax | |
| 19 | + add $3,%eax | |
| 20 | + and $-4,%eax | |
| 21 | +#ifdef _WIN32 | |
| 22 | + jmp .+16 #p2 | |
| 23 | +p1: | |
| 24 | + sub $4096,%esp | |
| 25 | + sub $4096,%eax | |
| 26 | + test %eax,(%esp) | |
| 27 | +p2: | |
| 28 | + cmp $4096,%eax | |
| 29 | + jae p1 | |
| 30 | +#endif | |
| 31 | + sub %eax,%esp | |
| 32 | + mov 4(%ebp),%eax | |
| 33 | + mov 0(%ebp),%ebp | |
| 34 | + add $8,%esp | |
| 35 | + push %eax | |
| 36 | + lea 8(%esp),%eax | |
| 37 | + ret | |
| 38 | + | |
| 39 | +/* ---------------------------------------------- */ | |
| 40 | +#elif defined __x86_64__ | |
| 41 | + | |
| 42 | +.globl _(alloca) | |
| 43 | +_(alloca): | |
| 44 | + pop %rdx | |
| 45 | +#ifdef _WIN32 | |
| 46 | + mov %rcx,%rax | |
| 47 | +#else | |
| 48 | + mov %rdi,%rax | |
| 49 | +#endif | |
| 50 | + add $15,%rax | |
| 51 | + and $-16,%rax | |
| 52 | + jz p3 | |
| 53 | + | |
| 54 | +#ifdef _WIN32 | |
| 55 | +p1: | |
| 56 | + cmp $4096,%rax | |
| 57 | + jbe p2 | |
| 58 | + test %rax,-4096(%rsp) | |
| 59 | + sub $4096,%rsp | |
| 60 | + sub $4096,%rax | |
| 61 | + jmp p1 | |
| 62 | +p2: | |
| 63 | +#endif | |
| 64 | + sub %rax,%rsp | |
| 65 | + mov %rsp,%rax | |
| 66 | +p3: | |
| 67 | + push %rdx | |
| 68 | + ret | |
| 69 | + | |
| 70 | +/* ---------------------------------------------- */ | |
| 71 | +#elif defined __arm__ | |
| 72 | + | |
| 73 | + .text | |
| 74 | + .align 2 | |
| 75 | + .global alloca | |
| 76 | + .type alloca, %function | |
| 77 | +alloca: | |
| 78 | + rsb sp, r0, sp | |
| 79 | + bic sp, sp, #7 | |
| 80 | + mov r0, sp | |
| 81 | + mov pc, lr | |
| 82 | + .size alloca, .-alloca | |
| 83 | + | |
| 84 | +/* ---------------------------------------------- */ | |
| 85 | +#endif | |