FreeCalypso > hg > freecalypso-sw
comparison gsm-fw/lldbg/entry.S @ 865:f5affe83ba2d
lldbg hack (poor girl's substitute for JTAG) implemented
| author | Space Falcon <falcon@ivan.Harhan.ORG> |
|---|---|
| date | Fri, 15 May 2015 00:02:03 +0000 |
| parents | |
| children |
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| 864:4fa939eada22 | 865:f5affe83ba2d |
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| 1 .section "ext.ram","aw",%nobits | |
| 2 .balign 4 | |
| 3 .globl lldbg_stack | |
| 4 lldbg_stack: | |
| 5 .space 2048 | |
| 6 lldbg_init_sp: | |
| 7 | |
| 8 .text | |
| 9 .code 32 | |
| 10 .globl lldbg_entry | |
| 11 lldbg_entry: | |
| 12 stmfd sp!, {r0-r12,lr} | |
| 13 mrs r0, CPSR | |
| 14 mov r1, sp | |
| 15 /* supervisor mode, disable all interrupts */ | |
| 16 msr CPSR_c, #0xd3 | |
| 17 ldr sp, =lldbg_init_sp | |
| 18 /* save entry SP and CPSR */ | |
| 19 ldr r2, =lldbg_entry_cpsr | |
| 20 str r0, [r2] | |
| 21 ldr r2, =lldbg_entry_sp | |
| 22 str r1, [r2] | |
| 23 b lldbg_main |