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| /* SPDX-License-Identifier: GPL-2.0 */
| #include <linux/linkage.h>
| #include <asm/assembler.h>
|
| #ifndef CONFIG_DEBUG_SEMIHOSTING
|
| #include CONFIG_DEBUG_LL_INCLUDE
|
| ENTRY(putc)
| addruart r1, r2, r3
| #ifdef CONFIG_DEBUG_UART_FLOW_CONTROL
| waituartcts r3, r1
| #endif
| waituarttxrdy r3, r1
| senduart r0, r1
| busyuart r3, r1
| mov pc, lr
| ENDPROC(putc)
|
| #else
|
| ENTRY(putc)
| adr r1, 1f
| ldmia r1, {r2, r3}
| add r2, r2, r1
| ldr r1, [r2, r3]
| strb r0, [r1]
| mov r0, #0x03 @ SYS_WRITEC
| ARM( svc #0x123456 )
| #ifdef CONFIG_CPU_V7M
| THUMB( bkpt #0xab )
| #else
| THUMB( svc #0xab )
| #endif
| mov pc, lr
| .align 2
| 1: .word _GLOBAL_OFFSET_TABLE_ - .
| .word semi_writec_buf(GOT)
| ENDPROC(putc)
|
| .bss
| .global semi_writec_buf
| .type semi_writec_buf, %object
| semi_writec_buf:
| .space 4
| .size semi_writec_buf, 4
|
| #endif
|
|
