040220acee
* build-aux/build-guile.sh: Add ARM backend. * lib/arm-mes/arm.M1: New file. * module/mescc/armv4/as.scm: New file. * module/mescc/armv4/info.scm: New file. * module/mescc/mescc.scm: Use it. * module/mescc/M1.scm (info->M1): Support ARM symbolic instructions, including little endian instructions. Align functions.
391 lines
14 KiB
Plaintext
391 lines
14 KiB
Plaintext
### GNU Mes --- Maxwell Equations of Software
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### Copyright © 2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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### Copyright © 2019,2020 Danny Milosavljevic <dannym@scratchpost.org>
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###
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### This file is part of GNU Mes.
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###
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### Mes is free software# you can redistribute it and/or modify it
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### under the terms of the GNU General Public License as published by
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### the Free Software Foundation# either version 3 of the License, or (at
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### your option) any later version.
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###
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### GNU Mes is distributed in the hope that it will be useful, but
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### WITHOUT ANY WARRANTY# without even the implied warranty of
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### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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### GNU General Public License for more details.
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###
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### You should have received a copy of the GNU General Public License
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### along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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# Note: r9 is used as scratch register and is assumed to not contain anything important!
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# reduced instruction set: r0, r1 (some r2 for shift, r3 for mul)
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# The "e" in most opcodes near the end means "always".
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# 020090e0 # adds r0, r0, r2; ADDS = '0' op3 op1 '09' op2 'e0'
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# 030091e0 # adds r0, r1, r3
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# 031091e0 # adds r1, r1, r3
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# 030090e0 # adds r0, r0, r3
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DEFINE add____$i8,%r0 0090e2 # adds r0, r0, #xx; ADDSI = immediate op1 '09' op2 'e2'
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# 0091e2 # adds r0, r1, #xx; ADDSI = immediate op1 '09' op2 'e2'
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# 1090e2 # adds r1, r0, #xx; ADDSI = immediate op1 '09' op2 'e2'
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DEFINE add____$i8,%r1 1091e2 # adds r1, r1, #xx
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DEFINE add____$i8,%r13 d09de2 # adds r13, r13, #xx
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DEFINE sub____$i8,%r0 0050e2 # subs r0, r0, #xx
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DEFINE sub____$i8,%r1 1051e2 # subs r1, r1, #xx
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DEFINE add____%r0,%r0 000090e0 # adds r0, r0, r0
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DEFINE add____%r0,%r1 001091e0 # adds r1, r1, r0
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DEFINE add____%r1,%r0 010090e0 # adds r0, r0, r1
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DEFINE add____%r1,%r1 011091e0 # adds r1, r1, r1
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DEFINE and____%r1,%r0 010010e0 # ands r0, r0, r1
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DEFINE and____$i8,%r0 0000e2
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DEFINE and____$i8,%r1 1001e2
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DEFINE call___*%r0 30ff2fe1
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DEFINE call___*%r1 31ff2fe1
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DEFINE cmp____$i8,%r0 0050e3
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DEFINE cmp____$i8,%r1 0051e3
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DEFINE cmn____$i8,%r0 0070e3
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DEFINE cmn____$i8,%r1 0071e3
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DEFINE swi____$0 000000ef
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DEFINE ja 8a
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DEFINE jae 3a
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DEFINE jb 2a
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DEFINE jbe 9a
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DEFINE je 0a
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DEFINE jg ca
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DEFINE jge aa
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DEFINE jl ba
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DEFINE jle da
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DEFINE jne 1a
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# e3a00064 mov r0, #100
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# e3a01064 mov r1, #100
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# e3a02064 mov r2, #100
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# 0: e3047215 movw r7, #16917 ; 0x4215
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# OK:
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DEFINE mov____$i8,%r0 00a0e3
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DEFINE mov____$i8,%r1 10a0e3
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DEFINE mov____$i8,%r7 70a0e3
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DEFINE mvn____%r0,$i8 00e0e3
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DEFINE mvn____%r1,$i8 10e0e3
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DEFINE mvn____%r7,$i8 70e0e3
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DEFINE mov____%r0,%r1 0010a0e1
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DEFINE mov____%r0,%r2 0020a0e1
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DEFINE mov____%fp,%r1 0b10a0e1
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DEFINE mov____%fp,%r2 0b20a0e1
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DEFINE mov____%r0,(%r1) 000081e5
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DEFINE mov____%r1,%r0 0100a0e1
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DEFINE mov____%r1,%r2 0120a0e1
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DEFINE mov____%esp,%r0 0d00a0e1
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# e59f9004 ldr r9, [pc, #4] ; <L1>
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# e5890000 str r0, [r9]
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# ea000000 b L2
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# L1: ???
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# L2:
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DEFINE mov____%r0,0x32 04909fe5000089e5000000ea
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DEFINE mov____%r1,0x32 04909fe5001089e5000000ea
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DEFINE mov____%r2,0x32 04909fe5002089e5000000ea
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# e92d0005 push {r0, r2}
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# e5910000 ldr r0, [r1]
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# e59f200c ldr r2, [pc, #12] ; 1c <X2>
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# e0800002 add r0, r0, r2
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# e5810000 str r0, [r1]
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# e8bd0005 pop {r0, r2}
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# ea000000 b 20 <Y2>
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# X2: ???
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# Y2:
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DEFINE add____$i32,(%r1) 05002de9000091e50c209fe5020080e0000081e50500bde8000000ea
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# e59f0000 ldr r0, [pc]
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# ea000000 b c <R>
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# nop
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# R:
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DEFINE mov____$i32,%r0 00009fe5000000ea
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DEFINE mov____$i32,%r1 00109fe5000000ea
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DEFINE mov____$i32,%r2 00209fe5000000ea
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DEFINE mov____$i32,%r7 00709fe5000000ea
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DEFINE mov____%r2,(%r1) 002081e5
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DEFINE mov____%r3,%r0 0300a0e1
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DEFINE mov____%r3,%r1 0e10a0e1
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DEFINE mov____(%r0),%r0 000090e5
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DEFINE mov____(%r0),%r2 002090e5
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DEFINE mov____(%r1),%r1 001091e5
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DEFINE nop 0000a0e1
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DEFINE not____%r0 0000e0e1
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DEFINE not____%r1 0110e0e1
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DEFINE or_____%r1,%r0 010090e1 # orrs r0, r0, r1
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DEFINE pop____%r0 04009de4
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DEFINE pop____%r1 04109de4
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DEFINE pop____%r3 04309de4
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DEFINE pop____%lr 04e09de4
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# e59f9004 ldr r9, [pc, #4] ; c <L1x>
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# e52d9004 push {r9} ; (str r9, [sp, #-4]!)
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# ea000000 b 10 <L1y>
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# L1x: data
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# L1y:
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DEFINE push___$i32 04909fe504902de5000000ea
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DEFINE push___%r0 04002de5 # str r0, [sp, #-4]!
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DEFINE push___%r1 04102de5 # str r1, [sp, #-4]!
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DEFINE push___%r2 04202de5 # str r2, [sp, #-4]!
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DEFINE push___%r3 04302de5 # str r3, [sp, #-4]!
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DEFINE push___%lr 04e02de5 # str lr, [sp, #-4]!
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DEFINE sub____%r1,%r0 010050e0 # subs r0, r0, r1
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DEFINE test___%r0,%r0 000010e1
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DEFINE test___%r1,%r1 010011e1
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DEFINE xor____$i8,%r0 0030e2 # eors r0, r0, #xx
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DEFINE xor____%r0,%r0 000030e0 # eors r0, r0, r0
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DEFINE xor____%r1,%r0 010030e0 # eors r0, r0, r1
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DEFINE xor____%r1,%r1 011031e0 # eors r1, r1, r1
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DEFINE xor____%r3,%r3 033033e0 # eors r3, r3, r3
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# Note: These are the native ARM instructions.
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# Note: i8 immediate
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DEFINE ldr____%r0,(%fp,+#$i8) 009be5
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DEFINE ldr____%r1,(%fp,+#$i8) 109be5
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DEFINE ldr____%r2,(%fp,+#$i8) 209be5
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DEFINE ldr____%r3,(%fp,+#$i8) 309be5
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DEFINE ldr____%r4,(%fp,+#$i8) 409be5
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DEFINE ldr____%r5,(%fp,+#$i8) 509be5
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DEFINE ldr____%r7,(%fp,+#$i8) 709be5
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DEFINE ldr____%fp,(%fp,+#$i8) b09be5
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DEFINE ldr____%sp,(%fp,+#$i8) d09be5
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DEFINE ldr____%lr,(%fp,+#$i8) e09be5
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DEFINE ldr____%r0,(%fp,-#$i8) 001be5
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DEFINE ldr____%r1,(%fp,-#$i8) 101be5
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DEFINE ldr____%r2,(%fp,-#$i8) 201be5
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DEFINE ldr____%r3,(%fp,-#$i8) 301be5
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DEFINE ldr____%r4,(%fp,-#$i8) 401be5
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DEFINE ldr____%r5,(%fp,-#$i8) 501be5
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DEFINE ldr____%r7,(%fp,-#$i8) 701be5
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DEFINE ldr____%fp,(%fp,-#$i8) b01be5
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DEFINE ldr____%sp,(%fp,-#$i8) d01be5
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DEFINE ldr____%lr,(%fp,-#$i8) e01be5
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DEFINE str____%r0,(%fp,+#$i8) 008be5
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DEFINE str____%r1,(%fp,+#$i8) 108be5
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DEFINE str____%r2,(%fp,+#$i8) 208be5
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DEFINE str____%r3,(%fp,+#$i8) 308be5
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DEFINE str____%r4,(%fp,+#$i8) 408be5
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DEFINE str____%r5,(%fp,+#$i8) 508be5
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DEFINE str____%r7,(%fp,+#$i8) 708be5
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DEFINE str____%fp,(%fp,+#$i8) b08be5
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DEFINE str____%sp,(%fp,+#$i8) d08be5
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DEFINE str____%lr,(%fp,+#$i8) e08be5
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DEFINE str____%r0,(%fp,-#$i8) 000be5
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DEFINE str____%r1,(%fp,-#$i8) 100be5
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DEFINE str____%r2,(%fp,-#$i8) 200be5
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DEFINE str____%r3,(%fp,-#$i8) 300be5
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DEFINE str____%r4,(%fp,-#$i8) 400be5
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DEFINE str____%r5,(%fp,-#$i8) 500be5
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DEFINE str____%r7,(%fp,-#$i8) 700be5
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DEFINE str____%fp,(%fp,-#$i8) b00be5
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DEFINE str____%sp,(%fp,-#$i8) d00be5
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DEFINE str____%lr,(%fp,-#$i8) e00be5
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# Note: Loads INTO register r0 (ARM original operand order)
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DEFINE ldrsb__%r0,(%r0) d000d0e1 # ldrsb r0, [r0]
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DEFINE ldrsb__%r1,(%r1) d010d1e1 # ldrsb r1, [r1]
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DEFINE ldrsb__%r2,(%r2) d020d2e1 # ldrsb r2, [r2]
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DEFINE ldrsb__%r3,(%r3) d030d3e1 # ldrsb r3, [r3]
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DEFINE ldrsb__%r4,(%r4) d040d4e1 # ldrsb r4, [r4]
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DEFINE ldrsb__%r5,(%r5) d050d5e1 # ldrsb r5, [r5]
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DEFINE ldrb___%r0,(%r1) 0000d1e5 # ldrb r0, [r1]
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DEFINE ldrh___%r0,(%r0) b000d0e1 # ldrh r0, [r0]
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DEFINE ldrh___%r0,(%r1) b000d1e1 # ldrh r0, [r1]
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DEFINE ldrh___%r1,(%r1) b010d1e1 # ldrh r1, [r1]
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DEFINE ldrh___%r2,(%r2) b020d2e1 # ldrh r2, [r2]
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DEFINE ldrh___%r3,(%r3) b030d3e1 # ldrh r3, [r3]
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DEFINE strb___%r0,(%r0) 0000c0e5 # strb r0, [r0]
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DEFINE strb___%r0,(%r1) 0000c1e5 # strb r0, [r1]
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DEFINE strb___%r1,(%r1) 0010c1e5 # strb r1, [r1]
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DEFINE strb___%r2,(%r2) 0020c2e5 # strb r2, [r2]
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DEFINE strb___%r3,(%r3) 0030c3e5 # strb r3, [r3]
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DEFINE strb___%r4,(%r4) 0040c4e5 # strb r4, [r4]
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DEFINE strb___%r0,(%fp,+#$i8) 00cbe5 # strb r0, [fp, +#xx]
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DEFINE strb___%r0,(%fp,-#$i8) 004be5 # strb r0, [fp, -#xx]
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DEFINE strh___%r0,(%r0) b000c0e1 # strh r0, [r0]
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DEFINE strh___%r0,(%r1) b000c1e1 # strh r0, [r1]
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DEFINE strh___%r1,(%r1) b010c1e1 # strh r1, [r1]
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DEFINE strh___%r2,(%r2) b020c2e1 # strh r2, [r2]
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DEFINE strh___%r3,(%r3) b030c3e1 # strh r3, [r3]
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DEFINE strh___%r4,(%r4) b040c4e1 # strh r4, [r4]
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# There's a single instruction that does it--but I don't know how to encode it.
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# mov %r9, immediate
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# add %r9, %r9, %fp
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# strh %r0, [%r9]
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DEFINE strh___%r0,(%fp,+#$i8) 90a0e30b9089e0b000c9e1
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# There's a single instruction that does it--but I don't know how to encode it.
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# e3a090xx mov %r9, immediate
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# e05b9009 sub %r9, %fp, %r9
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# e1c900b0 strh %r0, [%r9]
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DEFINE strh___%r0,(%fp,-#$i8) 90a0e309904be0b000c9e1
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DEFINE movle__%r0,$i8 00a0d3 # movle r0, #xx
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DEFINE movlt__%r0,$i8 00a0b3 # movlt r0, #xx
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DEFINE movge__%r0,$i8 00a0a3 # movge r0, #xx
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DEFINE movgt__%r0,$i8 00a0c3 # movgt r0, #xx
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DEFINE movcs__%r0,$i8 00a023 # movcs r0, #xx
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DEFINE movcc__%r0,$i8 00a033 # movcc r0, #xx
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DEFINE movhi__%r0,$i8 00a083 # movhi r0, #xx
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DEFINE moveq__%r0,$i8 00a003 # moveq r0, #xx
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DEFINE movle__%r1,$i8 10a0d3 # movle r1, #xx
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DEFINE movlt__%r1,$i8 10a0b3 # movlt r1, #xx
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DEFINE movge__%r1,$i8 10a0a3 # movge r1, #xx
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DEFINE movgt__%r1,$i8 10a0c3 # movgt r1, #xx
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DEFINE movcs__%r1,$i8 10a023 # movcs r1, #xx
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DEFINE movcc__%r1,$i8 10a033 # movcc r1, #xx
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DEFINE movhi__%r1,$i8 10a083 # movhi r1, #xx
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DEFINE moveq__%r1,$i8 10a003 # moveq r1, #xx
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DEFINE asr____%r0,%r0,%r1 5001a0e1 # asr %r0, %r0, %r1
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DEFINE lsl____%r0,%r0,%r1 1001a0e1 # lsl %r0, %r0, %r1
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DEFINE lsl____%r0,%r0,$i8 90a0e31009a0e1 # mov r9, #xx; lsl %r0, %r0, %r9
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DEFINE lsl____%r1,%r1,$i8 90a0e31119a0e1 # mov r9, #xx; lsl %r1, %r1, %r9
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DEFINE lsr____%r0,%r0,%r1 3001a0e1 # lsr %r0, %r0, %r1
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DEFINE ldr____%r0,(%sp,#$i8) 009de5 # ldr r0, [r13+xx]
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DEFINE ldr____%r1,(%sp,#$i8) 109de5 # ldr r1, [r13+xx]
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#DEFINE add____%r2,%r0,%r1,lsl#4 012280e0
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# Without carry
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DEFINE add____%r2,%r0,%r1,lsl#2 012180e0
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DEFINE add____%r2,%r1,%r0,lsl#2 002181e0
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DEFINE add____%r1,$i8 1081e2
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DEFINE add____%r2,$i8 2082e2
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DEFINE bl eb
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DEFINE b ea
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DEFINE sxtb__%r0,%r0 7000afe6
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DEFINE sxtb__%r1,%r1 7110afe6
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DEFINE sxth__%r0,%r0 7000bfe6
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DEFINE sxth__%r1,%r1 7110bfe6
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DEFINE uxtb__%r0,%r0 7000efe6
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DEFINE uxtb__%r1,%r1 7110efe6
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DEFINE uxth__%r0,%r0 7000ffe6
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DEFINE uxth__%r1,%r1 7110ffe6
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# See: https://github.com/torvalds/linux/blob/v4.19/arch/arm/tools/syscall.tbl
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DEFINE SYS_exit 01
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DEFINE SYS_fork 02
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DEFINE SYS_read 03
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DEFINE SYS_write 04
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DEFINE SYS_open 05
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DEFINE SYS_close 06
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# DEFINE SYS_waitpid does_not_exist
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DEFINE SYS_rmdir 28
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DEFINE SYS_wait4 72
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# waitid: 0x118
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DEFINE SYS_unlink 0a
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DEFINE SYS_execve 0b
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DEFINE SYS_chmod 0f
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DEFINE SYS_lseek 13
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DEFINE SYS_access 21
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DEFINE SYS_brk 2d
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DEFINE SYS_ioctl 36
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DEFINE SYS_stat 6a
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DEFINE SYS_fsync 76
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DEFINE SYS_getcwd b7
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# These are x86 ABI remnants:
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DEFINE mul____%r1,%r0 910089e0 # umull r0, r9, r1, r0
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DEFINE mul____%r0,%r1 910089e0 # umull r0, r9, r1, r0
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DEFINE mov____%ebp,%r0 0b00a0e1
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DEFINE mov____%ebp,%r1 0b10a0e1
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DEFINE push___%ebp 04b02de5 # str fp, [sp, #-4]!
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DEFINE pop____%ebp 04b09de4 # ldr fp, [sp], #4
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DEFINE mov____%esp,%ebp 0db0a0e1 # mov fp, sp
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DEFINE mov____%ebp,%esp 0bd0a0e1 # mov sp, fp
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DEFINE sub____$i8,%esp d04de2 # sub sp, sp, #xx
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DEFINE jmp____*%r1 11ff2fe1
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# e59f9008 ldr r9, [pc, #8] ; 10 <LX1>
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# e089900b add r9, r9, fp
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# e5890000 str r0, [r9]
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# ea000000 b 14 <LX2>
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# 00000010 <LX1>: data
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# 00000014 <LX2>:
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DEFINE mov____%r0,0x32(%ebp) 08909fe50b9089e0000089e5000000ea
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DEFINE mov____%r1,0x32(%ebp) 08909fe50b9089e0001089e5000000ea
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DEFINE mov____%r2,0x32(%ebp) 08909fe50b9089e0002089e5000000ea
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# e59f9004 ldr r9, [pc, #4] ; c <LX1>
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# e5990000 ldr r0, [r9]
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# ea000000 b 10 <LX2>
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DEFINE mov____0x32,%r0 04909fe5000099e5000000ea
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DEFINE mov____0x32,%r1 04909fe5001099e5000000ea
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DEFINE mov____0x32,%r2 04909fe5002099e5000000ea
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# e1a09000 mov r9, r0
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# e1a00001 mov r0, r1
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# e1a01009 mov r1, r9
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DEFINE xchg___%r0,%r1 0090a0e10100a0e10910a0e1
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# e49de004 pop {lr} ; (ldr lr, [sp], #4)
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# e1a0f00e mov pc, lr
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DEFINE ret 04e09de40ef0a0e1
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# The flags are also updated, but that's probably useless.
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DEFINE add____$i8,%esp d09de2
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# e24ddeff sub sp, sp, #4080
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# e24dd064 sub sp, sp, #100
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DEFINE allocate_stack_4180 ffde4de264d04de2
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DEFINE mov____0x32(%ebp),%r0 08909fe50b9089e0000099e5000000ea
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# e59f9008 ldr r9, [pc, #8]
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# e089900b add r9, r9, fp
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# e5991000 ldr r1, [r9]
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# ea000000 b 20 <VD>
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# V: ...
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# VD:
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DEFINE mov____0x32(%ebp),%r1 08909fe50b9089e0001099e5000000ea
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# e1a09000 mov r9, r0
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# e59d0000 ldr r0, [sp]
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# e58d9000 str r9, [sp]
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DEFINE xchg___%r0,(%esp) 0090a0e100009de500908de5
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# e52d1004 push {r1} ; (str r1, [sp, #-4]!)
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# e59f1010 ldr r1, [pc, #16] ; 1c <WERT>
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# e5909000 ldr r9, [r0]
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# e0999001 adds r9, r9, r1
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# e5809000 str r9, [r0]
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# e49d1004 pop {r1} ; (ldr r1, [sp], #4)
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# ea000000 b 20 <VD>
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# V: ...
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# VD:
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DEFINE add____$i32,(%r0) 04102de510109fe5009090e5019099e0009080e504109de4000000ea
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# mov %r9, #00
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# push {%r9}
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DEFINE push___0 0090a0e304902de5
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DEFINE add____$i32,%r0 04909fe5090090e0000000ea
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# e59f9004 ldr r9, [pc, #4] ; c <VALUE>
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# e0911009 adds r1, r1, r9
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# ea000000 b 10
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# VALUE:
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DEFINE add____$i32,%r1 04909fe5091091e0000000ea
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DEFINE add____$i32,%r2 04909fe5092092e0000000ea
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# e59f9008 ldr r9, [pc, #8] ; 10 <WERT>
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# e089900b add r9, r9, fp
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# e5c90000 strb r0, [r9]
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# ea000000 b 14 <WERTD>
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# WERT: nop
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# WERTD:
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DEFINE strb___%r0,0x32(%ebp) 08909fe50b9089e00000c9e5000000ea
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DEFINE wfi 03f020e3
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