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doug65536/gist:8e070b3945ea49aa24461e7aab88a564

Created May 31, 2021 06:17
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what happened?! 0x1ffdf0000???
Raw
gistfile1.txt
0x000000000000fff0 in ?? ()
(gdb) source ../../dgos/src/gdbhelpers
(gdb) ddd
0xfffffff0: 66 b9 00 00 e0 ff movl $0xffe00000, %ecx
0xfffffff6: 66 ff e1 jmpl *%ecx
0xfffffff9: 48 decw %ax
0xfffffffa: 65 6c insb %dx, %es:(%di)
0xfffffffc: 6c insb %dx, %es:(%di)
0xfffffffd: 6f outsw (%si), %dx
0xfffffffe: 21 00 andw %ax, (%bx, %si)
0x100000000: 00 00 addb %al, (%bx, %si)
0x100000002: 00 00 addb %al, (%bx, %si)
0x100000004: 00 00 addb %al, (%bx, %si)
(gdb) sid
0x000000000000fff6 in ?? ()
0xfffffff6: 66 ff e1 jmpl *%ecx
0xfffffff9: 48 decw %ax
0xfffffffa: 65 6c insb %dx, %es:(%di)
0xfffffffc: 6c insb %dx, %es:(%di)
0xfffffffd: 6f outsw (%si), %dx
0xfffffffe: 21 00 andw %ax, (%bx, %si)
0x100000000: 00 00 addb %al, (%bx, %si)
0x100000002: 00 00 addb %al, (%bx, %si)
0x100000004: 00 00 addb %al, (%bx, %si)
0x100000006: 00 00 addb %al, (%bx, %si)
(gdb)
0x00000000ffe00000 in _start ()
0x1ffdf0000: 00 00 addb %al, (%bx, %si)
0x1ffdf0002: 00 00 addb %al, (%bx, %si)
0x1ffdf0004: 00 00 addb %al, (%bx, %si)
0x1ffdf0006: 00 00 addb %al, (%bx, %si)
0x1ffdf0008: 00 00 addb %al, (%bx, %si)
0x1ffdf000a: 00 00 addb %al, (%bx, %si)
0x1ffdf000c: 00 00 addb %al, (%bx, %si)
0x1ffdf000e: 00 00 addb %al, (%bx, %si)
0x1ffdf0010: 00 00 addb %al, (%bx, %si)
0x1ffdf0012: 00 00 addb %al, (%bx, %si)
(gdb)
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