annotate src/entry-clang.S @ 48:58ec26c64601

fix_makefile.inc use *.cbc files
author anatofuz
date Wed, 13 Mar 2019 11:29:46 +0900
parents f28daf1e47c1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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1 #include "arm.h"
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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2 #include "memlayout.h"
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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3
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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4 .text
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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5 .code 32
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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6
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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7 .global _start
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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8
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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9 _start:
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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10 # clear the entry bss section, the svc stack, and kernel page table
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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11 LDR r1, =edata_entry
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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12 LDR r2, =end_entry
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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13 MOV r3, #0x00
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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14
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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15 1:
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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16 CMP r1, r2
13
f28daf1e47c1 clang-arm
mir3636
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17 # STMLTIA r1!, {r3}
f28daf1e47c1 clang-arm
mir3636
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18 STMIALT r1!, {r3}
0
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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19 BLT 1b
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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20
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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21 # initialize stack pointers for svc modes
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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22 MSR CPSR_cxsf, #(SVC_MODE|NO_INT)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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23 LDR sp, =svc_stktop
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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24
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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25 BL start
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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26 B .
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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27
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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28 # during startup, kernel stack uses user address, now switch it to kernel addr
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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29 .global jump_stack
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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30 jump_stack:
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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31 MOV r0, sp
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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32 ADD r0, r0, #KERNBASE
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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33 MOV sp, r0
11
mir3636
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34 MOV pc, lr