1. struct Test1{
unsigned int
ui1;
unsigned int
ui2;
char c1;
char c2;
};
The memory map
Attachment:
test1.jpg [ 16.5 KiB | Viewed 17211 times ]
The assemble code
Code:
t1.ui1=1;
c8e: b0 07 addri36.sp $r0,#0x1c
c90: 84 21 movi55 $r1,#0x1
c92: b6 20 swi450 $r1,[$r0]
t1.ui2=2;
c94: b0 07 addri36.sp $r0,#0x1c
c96: 84 22 movi55 $r1,#0x2
c98: a8 41 swi333 $r1,[$r0+#0x4]
t1.c1=3;
c9a: b0 07 addri36.sp $r0,#0x1c
c9c: 84 23 movi55 $r1,#0x3
c9e: 10 10 00 08 sbi $r1,[$r0+#0x8]
t1.c2=4;
ca2: b0 07 addri36.sp $r0,#0x1c
ca4: 84 24 movi55 $r1,#0x4
ca6: 10 10 00 09 sbi $r1,[$r0+#0x9]
2. struct Test2{
char c1;
unsigned int ui1;
char c2;
unsigned int ui2;
};
The memory map
Attachment:
test2.jpg [ 28.43 KiB | Viewed 17211 times ]
The assemble code
Code:
t2.c1=1;
caa: b0 03 addri36.sp $r0,#0xc
cac: 84 21 movi55 $r1,#0x1
cae: ae 40 sbi333 $r1,[$r0+#0x0]
t2.ui1=2;
cb0: b0 03 addri36.sp $r0,#0xc
cb2: 84 22 movi55 $r1,#0x2
cb4: a8 41 swi333 $r1,[$r0+#0x4]
t2.c2=3;
cb6: b0 03 addri36.sp $r0,#0xc
cb8: 84 23 movi55 $r1,#0x3
cba: 10 10 00 08 sbi $r1,[$r0+#0x8]
t2.ui2=4;
cbe: b0 03 addri36.sp $r0,#0xc
cc0: 84 24 movi55 $r1,#0x4
cc2: a8 43 swi333 $r1,[$r0+#0xc]
3. struct Test3{
char c1;
unsigned int ui1;
char c2;
unsigned int ui2;
}__attribute__((packed));
The memory map
Attachment:
test3.jpg [ 16.76 KiB | Viewed 17211 times ]
The assemble
Code:
t3.c1=1;
cc4: b0 02 addri36.sp $r0,#0x8
cc6: 84 21 movi55 $r1,#0x1
cc8: ae 40 sbi333 $r1,[$r0+#0x0]
t3.ui1=2;
cca: b0 02 addri36.sp $r0,#0x8
ccc: 8c 01 addi45 $r0,#0x1
cce: a6 40 lbi333 $r1,[$r0+#0x0]
cd0: 54 10 80 00 andi $r1,$r1,#0x0
cd4: 58 10 80 02 ori $r1,$r1,#0x2
cd8: ae 40 sbi333 $r1,[$r0+#0x0]
cda: a6 41 lbi333 $r1,[$r0+#0x1]
cdc: 54 10 80 00 andi $r1,$r1,#0x0
ce0: ae 41 sbi333 $r1,[$r0+#0x1]
ce2: a6 42 lbi333 $r1,[$r0+#0x2]
ce4: 54 10 80 00 andi $r1,$r1,#0x0
ce8: ae 42 sbi333 $r1,[$r0+#0x2]
cea: a6 43 lbi333 $r1,[$r0+#0x3]
cec: 54 10 80 00 andi $r1,$r1,#0x0
cf0: ae 43 sbi333 $r1,[$r0+#0x3]
t3.c2=3;
cf2: b0 02 addri36.sp $r0,#0x8
cf4: 84 23 movi55 $r1,#0x3
cf6: ae 45 sbi333 $r1,[$r0+#0x5]
t3.ui2=4;
cf8: b0 02 addri36.sp $r0,#0x8
cfa: 8c 06 addi45 $r0,#0x6
cfc: a4 40 lhi333 $r1,[$r0+#0x0]
cfe: 54 10 80 00 andi $r1,$r1,#0x0
d02: 58 10 80 04 ori $r1,$r1,#0x4
d06: ac 40 shi333 $r1,[$r0+#0x0]
d08: a4 41 lhi333 $r1,[$r0+#0x2]
d0a: 54 10 80 00 andi $r1,$r1,#0x0
d0e: ac 41 shi333 $r1,[$r0+#0x2]
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