Figure 1-4 Thumb Instruction Set Formats - Epson ARM720T Core Cpu Manual

1: Introduction
1.3.3 Thumb instruction set
This section gives an overview of the Thumb instructions available. For full details of these
instructions, see the
The Thumb instruction set formats are shown in Figure 1-4.
Move, compare, add, and subtract
High register operations and branch
Load and store with relative offset
Load and store sign-extended byte and
Load and store with immediate offset
1-14
ARM Architecture Reference Manual
Move shifted register
Add and subtract
immediate
ALU operation
exchange
PC-relative load
halfword
Load and store halfword
SP-relative load and store
Load address
Add offset to stack pointer
Push and pop registers
Multiple load and store
Conditional branch
Software interrupt
Unconditional branch
Long branch with link

Figure 1-4 Thumb instruction set formats

.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
01 0 0 0 Op Offset5
02 0 0 0 1 1 1 Op
offset3
03 0 0 1 Op Rd
04 0 1 0 0 0 0 Op
05 0 1 0 0 0 1 Op
06 0 1 0 0 1 Rd
07 0 1 0 1 L B 0
08 0 1 0 1 H S 1
09 0 1 1 B L Offset5
10 1 0 0 0 L Offset5
11 1 0 0 1 L Rd
12 1 0 1 0 SP Rd
13 1 0 1 1 0 0 0 0 S
14 1 0 1 1 L 1 0 R
15 1 1 0 0 L Rb
16 1 1 0 1 Cond
17 1 1 0 1 1 1 1 1
18 1 1 1 0 0
19 1 1 1 1 H
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
EPSON
Rs Rd
Rn/
Rs Rd
Offset8
Rs Rd
H1 H2 Rs/Hs RdHd
Word8
Ro Rb Rd
Ro Rb Rd
Rb Rd
Rb Rd
Word8
Word8
SWord7
Rlist
Rlist
Softset8
Value8
Offset11
Offset
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