Created
October 14, 2015 10:44
-
-
Save synther/37dcdbdc6d47351a460a to your computer and use it in GitHub Desktop.
swap bytes
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
out_curr[3] = ((new_nal_len >> 0) & 0xFF); // move byte 3 to byte 0 | |
b384: e59d302c ldr r3, [sp, #44] ; 0x2c | |
b388: e2832003 add r2, r3, #3 | |
b38c: e59d3034 ldr r3, [sp, #52] ; 0x34 | |
b390: e20330ff and r3, r3, #255 ; 0xff | |
b394: e5c23000 strb r3, [r2] | |
out_curr[2] = ((new_nal_len >> 8) & 0xFF); // move byte 2 to byte 1 | |
b398: e59d302c ldr r3, [sp, #44] ; 0x2c | |
b39c: e2832002 add r2, r3, #2 | |
b3a0: e59d3034 ldr r3, [sp, #52] ; 0x34 | |
b3a4: e1a03443 asr r3, r3, #8 | |
b3a8: e20330ff and r3, r3, #255 ; 0xff | |
b3ac: e5c23000 strb r3, [r2] | |
out_curr[1] = ((new_nal_len << 16) & 0xFF); // move byte 1 to byte 2 | |
b3b0: e59d302c ldr r3, [sp, #44] ; 0x2c | |
b3b4: e2832001 add r2, r3, #1 | |
b3b8: e3a03000 mov r3, #0 | |
b3bc: e5c23000 strb r3, [r2] | |
out_curr[0] = ((new_nal_len << 24) & 0xFF); | |
b3c0: e59d202c ldr r2, [sp, #44] ; 0x2c | |
b3c4: e3a03000 mov r3, #0 | |
b3c8: e5c23000 strb r3, [r2] | |
*((int *)out_curr) = __builtin_bswap32(new_nal_len); | |
b384: e59d402c ldr r4, [sp, #44] ; 0x2c | |
b388: e59d3034 ldr r3, [sp, #52] ; 0x34 | |
b38c: e1a00003 mov r0, r3 | |
b390: eb0035a6 bl 18a30 <__bswapsi2> | |
b394: e1a03000 mov r3, r0 | |
b398: e5843000 str r3, [r4] | |
00017e28 <__bswapsi2>: | |
17e28: e1a03000 mov r3, r0 | |
17e2c: e1a00c20 lsr r0, r0, #24 | |
17e30: e20328ff and r2, r3, #16711680 ; 0xff0000 | |
17e34: e1800c03 orr r0, r0, r3, lsl #24 | |
17e38: e1800422 orr r0, r0, r2, lsr #8 | |
17e3c: e2033cff and r3, r3, #65280 ; 0xff00 | |
17e40: e1800403 orr r0, r0, r3, lsl #8 | |
17e44: e12fff1e bx lr |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment