projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 3b4af9bc SG |
2 | #include <linux/linkage.h> |
| 3 | #include <asm/assembler.h> | |
| 4 | ||
| 27523679 NP |
5 | #ifndef CONFIG_DEBUG_SEMIHOSTING |
| 6 | ||
| 3b4af9bc SG |
7 | #include CONFIG_DEBUG_LL_INCLUDE |
| 8 | ||
| 9 | ENTRY(putc) | |
| 10 | addruart r1, r2, r3 | |
| 11 | waituart r3, r1 | |
| 12 | senduart r0, r1 | |
| 13 | busyuart r3, r1 | |
| 14 | mov pc, lr | |
| 15 | ENDPROC(putc) | |
| 27523679 NP |
16 | |
| 17 | #else | |
| 18 | ||
| 19 | ENTRY(putc) | |
| 20 | adr r1, 1f | |
| 21 | ldmia r1, {r2, r3} | |
| 22 | add r2, r2, r1 | |
| 23 | ldr r1, [r2, r3] | |
| 24 | strb r0, [r1] | |
| 25 | mov r0, #0x03 @ SYS_WRITEC | |
| 26 | ARM( svc #0x123456 ) | |
| ee3eaee6 NP |
27 | #ifdef CONFIG_CPU_V7M |
| 28 | THUMB( bkpt #0xab ) | |
| 29 | #else | |
| 27523679 | 30 | THUMB( svc #0xab ) |
| ee3eaee6 | 31 | #endif |
| 27523679 NP |
32 | mov pc, lr |
| 33 | .align 2 | |
| 34 | 1: .word _GLOBAL_OFFSET_TABLE_ - . | |
| 35 | .word semi_writec_buf(GOT) | |
| 36 | ENDPROC(putc) | |
| 37 | ||
| 38 | .bss | |
| 39 | .global semi_writec_buf | |
| 40 | .type semi_writec_buf, %object | |
| 41 | semi_writec_buf: | |
| 42 | .space 4 | |
| 43 | .size semi_writec_buf, 4 | |
| 44 | ||
| 45 | #endif |