hi TI expert,
I can't access some virtual address when i use GDB to debug my code on TDA4VM platform.
first, i map a vximage which get from a objectArray
status = vxMapImagePatch(obj.onScreenImage[0], &rect, 0, &map_id, &image_addr, &data_ptr, VX_WRITE_ONLY, VX_MEMORY_TYPE_HOST,VX_NOGAP_X);
second, i set a breakpoint after vxMapImagePatch successful and run to this breakpoint, then i use print to show the data in the data_ptr, the whole operation as below:
(gdb) p data_ptr
$7 = (vx_uint8 *) 0xffff8aaeb000 <error: Cannot access memory at address 0xffff8aaeb000>
(gdb) p *0xffff8aaeb000
Cannot access memory at address 0xffff8aaeb000
(gdb) p *0xffff8c003000
$8 = 0
(gdb) info proc map
process 2648
Mapped address spaces:
Start Addr End Addr Size Offset objfile
...................................
0x3f3000 0xaeb4000 0xaac1000 0x0 [heap]
0xffff89d6b000 0xffff8a1a3000 0x438000 0x0 /dmabuf:
0xffff8a1a3000 0xffff8a5db000 0x438000 0x0 /dmabuf:
0xffff8a5db000 0xffff8aa13000 0x438000 0x0 /dmabuf:
0xffff8aa13000 0xffff8aaeb000 0xd8000 0x0 /dmabuf:
0xffff8aaeb000 0xffff8af23000 0x438000 0x0 /dmabuf:
0xffff8af23000 0xffff8b35b000 0x438000 0x0 /dmabuf:
0xffff8b35b000 0xffff8b793000 0x438000 0x0 /dmabuf:
0xffff8b793000 0xffff8bbcb000 0x438000 0x0 /dmabuf:
0xffff8bbcb000 0xffff8c003000 0x438000 0x0 /dmabuf:
0xffff8c003000 0xffff8c013000 0x10000 0x0
0xffff8c013000 0xffff8c813000 0x800000 0x0
0xffff8c813000 0xffff8c823000 0x10000 0x0
