ARM VERSION 1.2 Datasheet download pdf (Page 166)

Semihosting

After executing the SWI, the current link register will be r14_SVC, not r14_USR. If the

value of r14_USR is required after the call, it must be pushed onto the stack before the

call and popped afterwards, as for a

function call.

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Developer Suite 1
ARM Developer Suite 2
Contents 3
Chapter 4 ARMulator Reference 4
Chapter 5 Semihosting 4
• About this book on page vi 5
• Feedback on page x 5
About this book 6
Preface 7
Feedback 10
Chapter 1 11
Introduction 11
1.1 Debug target overview 12
Chapter 2 15
ARMulator Basics 15
2.1 About ARMulator 16
2.2 ARMulator components 17
2.3 Tracer 19
R r14=20000060, cpsr=200000d3 23
<register> 23
<newvalue> 23
2.4 Profiler 26
2.5 ARMulator cycle types 28
Counters=False 32
Counters=True 32
$statistics 32
2.6 Pagetable module 33
Pagetables 37
0xA0000000 37
0x00000001 37
AccessPermissions 38
0x00030003 39
2.7 Default memory model 40
$memstats 41
2.9 Semihosting 45
2.10 Peripheral models 46
Chapter 3 51
Writing ARMulator models 51
3.3 Building a new model 57
Chapter 4 61
4.1 ARMulator models 62
RDI_ModuleDesc * 63
4.3 Basic model interface 72
ARMul_CPInterface 75
4.5 Exceptions 86
4.6 Events 89
4.7 Handlers 93
4.8 Memory access functions 98
ARMulator Reference 100
PeripAccessCapability_Minimum 103
PeripAccessCapability_Typical 103
CPUSPEED 110
4.11 Accessing the debugger 112
4.11.8 Hostif_DebugPause 116
4.12 Tracer 117
4.13 Map files 119
Example 4-1 122
4.15 ToolConf 128
#include 131
ClockSpeed=10MHz 132
MemorySize=2Gb 132
4.16 Reference peripherals 135
TimerBase 137
Chapter 5 139
Semihosting 139
5.1 Semihosting 140
Default_Semihost 143
No_Semihost 143
$semihosting_enabled 144
$vector_catch 144
$semihosting_vector 144
5.4 Semihosting SWIs 149
On exit, r0 contains: 151
L_tmpnam 157
Example 5-1 163
function call 166
ADP_Stopped_ApplicationExit 167
Glossary 169

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ARM VERSION 1.2 Datasheet Page 166

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