Created
January 19, 2020 10:30
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| // -Wall -O2 -nostdlib -nostartfiles -ffreestanding -mcpu=arm1176jzf-s -mtune=arm1176jzf-s -mhard-float | |
| void foobar() | |
| { | |
| uint8 buf[11] = { 0 }; | |
| for (int i = 0; i < sizeof(buf); i++) | |
| { | |
| uint8 x = buf[i]; | |
| uint32 a = (uint32) &buf[i]; | |
| uart_putx(a); | |
| uart_putc(':'); | |
| uart_putc(' '); | |
| uart_putx(x); | |
| uart_putc('\n'); | |
| } | |
| } | |
| // 00007FE4: 00000000 | |
| // 00007FE5: 00000000 | |
| // 00007FE6: 00000000 | |
| // 00007FE7: 00000000 | |
| // 00007FE8: 00000000 | |
| // 00007FE9: 00000000 | |
| // 00007FEA: 00000000 | |
| // 00007FEB: 00000000 | |
| // 00007FEC: 00000020 <-- what the ... ?? | |
| // 00007FED: 0000009B <-- what the ... ?? | |
| // 00007FEE: 00000080 | |
| // 000081bc <foobar>: | |
| // 81bc: e3a03000 mov r3, #0 | |
| // 81c0: e92d4070 push {r4, r5, r6, lr} | |
| // 81c4: e24dd010 sub sp, sp, #16 | |
| // 81c8: e58d3008 str r3, [sp, #8] | |
| // 81cc: e1a05003 mov r5, r3 | |
| // 81d0: e58d3004 str r3, [sp, #4] | |
| // 81d4: e58d300b str r3, [sp, #11] | |
| // 81d8: e28d4004 add r4, sp, #4 | |
| // 81dc: e28d600e add r6, sp, #14 | |
| // 81e0: ea000000 b 81e8 <foobar+0x2c> | |
| // 81e4: e5f45001 ldrb r5, [r4, #1]! | |
| // 81e8: e1a00004 mov r0, r4 | |
| // 81ec: eb0000a3 bl 8480 <uart_putx> | |
| // 81f0: e3a0003a mov r0, #58 ; 0x3a | |
| // 81f4: eb00007b bl 83e8 <uart_putc> | |
| // 81f8: e3a00020 mov r0, #32 | |
| // 81fc: eb000079 bl 83e8 <uart_putc> | |
| // 8200: e1a00005 mov r0, r5 | |
| // 8204: eb00009d bl 8480 <uart_putx> | |
| // 8208: e3a0000a mov r0, #10 | |
| // 820c: eb000075 bl 83e8 <uart_putc> | |
| // 8210: e1540006 cmp r4, r6 | |
| // 8214: 1afffff2 bne 81e4 <foobar+0x28> | |
| // 8218: e28dd010 add sp, sp, #16 | |
| // 821c: e8bd8070 pop {r4, r5, r6, pc} |
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