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1 | @ vim:filetype=armasm |
2 | #include <sys/syscall.h> |
3 | |
4 | |
5 | .global sys_cacheflush @ const void *start_addr, const void *end_addr |
6 | sys_cacheflush: |
7 | mov r2, #0 |
8 | #ifdef __ARM_EABI__ |
9 | /* EABI version */ |
10 | str r7, [sp, #-4]! |
11 | mov r7, #(__ARM_NR_cacheflush & 0xff) |
12 | #if (__ARM_NR_cacheflush & 0x00ff00) |
13 | orr r7, r7, #(__ARM_NR_cacheflush & 0x00ff00) |
14 | #endif |
15 | #if (__ARM_NR_cacheflush & 0xff0000) |
16 | orr r7, r7, #(__ARM_NR_cacheflush & 0xff0000) |
17 | #endif |
18 | swi 0 |
19 | ldr r7, [sp], #4 |
20 | #else |
21 | /* OABI */ |
22 | swi __ARM_NR_cacheflush |
23 | #endif |
24 | bx lr |
25 | |
26 | |
27 | #ifdef __ARM_EABI__ |
28 | #error hm? |
29 | #endif |
30 | |
31 | .global g_syscall |
32 | g_syscall: |
33 | mov r12, sp |
34 | stmfd sp!, {r4, r5, r6} |
35 | ldmia r12, {r4, r5, r6} |
36 | swi __NR_syscall |
37 | ldmfd sp!, {r4, r5, r6} |
38 | |
39 | .global g_syscall_error |
40 | g_syscall_error: |
41 | cmn r0, #4096 |
42 | bxcc lr |
43 | stmfd sp!, {r4, lr} |
44 | rsb r4, r0, #0 |
45 | bl __errno_location |
46 | str r4, [r0] |
47 | mov r0, #-1 |
48 | ldmfd sp!, {r4, pc} |
49 | |
50 | .global g_clone |
51 | g_clone: |
52 | ldr r12,[sp, #4] @ arg6 - convenience func ptr |
53 | str r4, [sp, #-4]! |
54 | ldr r4, [sp, #4] @ arg5 |
55 | swi __NR_clone |
56 | tst r0, r0 |
57 | bxeq r12 @ child |
58 | cmn r0, #4096 |
59 | ldr r4, [sp], #4 |
60 | bcs g_syscall_error |
61 | bx lr |
62 | |
63 | @ raw - no errno |
64 | .macro raw_syscall_easy name nr |
65 | .global \name |
66 | \name: |
67 | swi \nr |
68 | bx lr |
69 | .endm |
70 | |
71 | .macro raw_syscall name nr |
72 | .global \name |
73 | \name: |
74 | mov r12, sp |
75 | stmfd sp!, {r4, r5, r6, lr} |
76 | ldmia r12, {r4, r5, r6} |
77 | swi \nr |
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78 | ldmfd sp!, {r4, r5, r6, pc} |
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79 | .endm |
80 | |
81 | raw_syscall_easy g_open_raw, __NR_open |
82 | raw_syscall_easy g_read_raw, __NR_read |
83 | raw_syscall_easy g_write_raw, __NR_write |
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84 | raw_syscall g_mmap2_raw, __NR_mmap2 |
85 | raw_syscall_easy g_munmap_raw, __NR_munmap |
86 | raw_syscall_easy g_ioctl_raw, __NR_ioctl |
87 | raw_syscall_easy g_close_raw, __NR_close |
88 | raw_syscall_easy g_chdir_raw, __NR_chdir |
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89 | raw_syscall_easy g_futex_raw, __NR_futex |
90 | raw_syscall_easy g_nanosleep_raw, __NR_nanosleep |
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91 | raw_syscall_easy g_readlink_raw, __NR_readlink |
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92 | raw_syscall_easy g_execve_raw, __NR_execve |
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93 | raw_syscall_easy g_clock_gettime_raw, __NR_clock_gettime |
94 | raw_syscall_easy g_rt_sigprocmask_raw, __NR_rt_sigprocmask |
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95 | raw_syscall_easy g_exit_group_raw, __NR_exit_group |