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https://github.com/AsahiLinux/u-boot
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9df5011e1e
This option does not exist, so the #ifdefs do nothing. Drop this code. Signed-off-by: Simon Glass <sjg@chromium.org>
114 lines
1.8 KiB
ArmAsm
114 lines
1.8 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* linux/arch/arm/kernel/debug.S
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*
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* Copyright (C) 1994-1999 Russell King
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*
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* 32-bit debugging code
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*/
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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.text
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/*
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* Some debugging routines (useful if you've got MM problems and
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* printk isn't working). For DEBUGGING ONLY!!! Do not leave
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* references to these in a production kernel!
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*/
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#if !defined(CONFIG_DEBUG_SEMIHOSTING)
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#include CONFIG_DEBUG_LL_INCLUDE
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#endif
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.macro addruart_current, rx, tmp1, tmp2
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addruart \rx, \tmp1, \tmp2
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.endm
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/*
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* Useful debugging routines
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*/
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ENTRY(printhex8)
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mov r1, #8
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b printhex
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ENDPROC(printhex8)
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ENTRY(printhex4)
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mov r1, #4
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b printhex
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ENDPROC(printhex4)
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ENTRY(printhex2)
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mov r1, #2
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printhex: adr r2, hexbuf
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add r3, r2, r1
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mov r1, #0
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strb r1, [r3]
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1: and r1, r0, #15
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mov r0, r0, lsr #4
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cmp r1, #10
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addlt r1, r1, #'0'
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addge r1, r1, #'a' - 10
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strb r1, [r3, #-1]!
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teq r3, r2
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bne 1b
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mov r0, r2
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b printascii
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ENDPROC(printhex2)
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hexbuf: .space 16
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.ltorg
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#ifndef CONFIG_DEBUG_SEMIHOSTING
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ENTRY(printascii)
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addruart_current r3, r1, r2
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b 2f
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1: waituart r2, r3
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senduart r1, r3
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busyuart r2, r3
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teq r1, #'\n'
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moveq r1, #'\r'
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beq 1b
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2: teq r0, #0
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ldrneb r1, [r0], #1
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teqne r1, #0
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bne 1b
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mov pc, lr
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ENDPROC(printascii)
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ENTRY(printch)
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addruart_current r3, r1, r2
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mov r1, r0
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mov r0, #0
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b 1b
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ENDPROC(printch)
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#else
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ENTRY(printascii)
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mov r1, r0
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mov r0, #0x04 @ SYS_WRITE0
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ARM( svc #0x123456 )
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THUMB( svc #0xab )
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mov pc, lr
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ENDPROC(printascii)
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ENTRY(printch)
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adr r1, hexbuf
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strb r0, [r1]
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mov r0, #0x03 @ SYS_WRITEC
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ARM( svc #0x123456 )
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THUMB( svc #0xab )
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mov pc, lr
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ENDPROC(printch)
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ENTRY(debug_ll_addr)
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mov r2, #0
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str r2, [r0]
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str r2, [r1]
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mov pc, lr
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ENDPROC(debug_ll_addr)
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#endif
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