FreeCalypso > hg > freecalypso-sw
annotate target-utils/c139-lldbg/entry.S @ 960:120148429b9f
Makefile.hosttools: lcdemu added
| author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
|---|---|
| date | Fri, 06 Nov 2015 17:42:00 +0000 |
| parents | d7830aee0d35 |
| children |
| rev | line source |
|---|---|
|
955
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
1 .text |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
2 .globl _entry |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
3 _entry: |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
4 .code 16 |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
5 bx pc |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
6 nop |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
7 |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
8 .code 32 |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
9 stmfd sp!, {r0-r12,lr} |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
10 mrs r0, CPSR |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
11 mov r1, sp |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
12 /* supervisor mode, disable all interrupts */ |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
13 msr CPSR_c, #0xd3 |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
14 ldr sp, =stack_bottom |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
15 /* save entry SP and CPSR */ |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
16 ldr r2, =lldbg_entry_cpsr |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
17 str r0, [r2] |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
18 ldr r2, =lldbg_entry_sp |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
19 str r1, [r2] |
|
d7830aee0d35
c139-lldbg hack concocted
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff
changeset
|
20 b main |
