| Shawn Guo | 3b4af9b | 2013-03-14 08:48:06 +0100 | [diff] [blame] | 1 | #include <linux/linkage.h> |
| 2 | #include <asm/assembler.h> |
| 3 | |
| Nicolas Pitre | 2752367 | 2013-05-29 16:57:30 +0100 | [diff] [blame] | 4 | #ifndef CONFIG_DEBUG_SEMIHOSTING |
| 5 | |
| Shawn Guo | 3b4af9b | 2013-03-14 08:48:06 +0100 | [diff] [blame] | 6 | #include CONFIG_DEBUG_LL_INCLUDE |
| 7 | |
| 8 | ENTRY(putc) |
| 9 | addruart r1, r2, r3 |
| 10 | waituart r3, r1 |
| 11 | senduart r0, r1 |
| 12 | busyuart r3, r1 |
| 13 | mov pc, lr |
| 14 | ENDPROC(putc) |
| Nicolas Pitre | 2752367 | 2013-05-29 16:57:30 +0100 | [diff] [blame] | 15 | |
| 16 | #else |
| 17 | |
| 18 | ENTRY(putc) |
| 19 | adr r1, 1f |
| 20 | ldmia r1, {r2, r3} |
| 21 | add r2, r2, r1 |
| 22 | ldr r1, [r2, r3] |
| 23 | strb r0, [r1] |
| 24 | mov r0, #0x03 @ SYS_WRITEC |
| 25 | ARM( svc #0x123456 ) |
| 26 | THUMB( svc #0xab ) |
| 27 | mov pc, lr |
| 28 | .align 2 |
| 29 | 1: .word _GLOBAL_OFFSET_TABLE_ - . |
| 30 | .word semi_writec_buf(GOT) |
| 31 | ENDPROC(putc) |
| 32 | |
| 33 | .bss |
| 34 | .global semi_writec_buf |
| 35 | .type semi_writec_buf, %object |
| 36 | semi_writec_buf: |
| 37 | .space 4 |
| 38 | .size semi_writec_buf, 4 |
| 39 | |
| 40 | #endif |