/* SPDX-License-Identifier: GPL-2.0 */ #include <linux/linkage.h> #include <asm/assembler.h> #ifndef [31mCONFIG_DEBUG_SEMIHOSTING[0m #include [31mCONFIG_DEBUG_LL_INCLUDE[0m ENTRY(putc) addruart r1, r2, r3 waituart 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 [31mCONFIG_CPU_V7M[0m 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 |