Re: oskit/mach copyout_retry bug

[Derek L Davies]

Roland McGrath <roland@gnu.org> writes:

> Do info regs and disas $pc in that gdb too.
> 

Here it is:

(gdb) disas $pc
Dump of assembler code for function copyout_retry:
0x13c285 <copyout_retry>:       mov    %cr3,%ecx
0x13c288 <copyout_retry+3>:     mov    %edi,%eax
0x13c28a <copyout_retry+5>:     shr    $0x16,%eax
0x13c28d <copyout_retry+8>:     mov    0x0(%ecx,%eax,4),%ecx
0x13c291 <copyout_retry+12>:    test   $0x1,%ecx
0x13c297 <copyout_retry+18>:    je     0x13c2c6 <copyout_retry+65>
0x13c299 <copyout_retry+20>:    and    $0xfffff000,%ecx
0x13c29f <copyout_retry+26>:    mov    %edi,%eax
0x13c2a1 <copyout_retry+28>:    shr    $0xc,%eax
0x13c2a4 <copyout_retry+31>:    and    $0x3ff,%eax
0x13c2a9 <copyout_retry+36>:    lea    0x0(%ecx,%eax,4),%ecx
0x13c2ad <copyout_retry+40>:    mov    (%ecx),%eax
0x13c2af <copyout_retry+42>:    test   $0x1,%eax
0x13c2b4 <copyout_retry+47>:    je     0x13c2c6 <copyout_retry+65>
0x13c2b6 <copyout_retry+49>:    test   $0x2,%eax
0x13c2bb <copyout_retry+54>:    jne    0x13c2c6 <copyout_retry+65>
0x13c2bd <copyout_retry+56>:    andl   $0xfffffffe,(%ecx)
0x13c2c0 <copyout_retry+59>:    mov    %cr3,%eax
0x13c2c3 <copyout_retry+62>:    mov    %eax,%cr3
0x13c2c6 <copyout_retry+65>:    lea    0x1000(%edi),%eax
0x13c2cc <copyout_retry+71>:    and    $0xfffff000,%eax
0x13c2d1 <copyout_retry+76>:    sub    %edi,%eax
0x13c2d3 <copyout_retry+78>:    cmp    %edx,%eax
0x13c2d5 <copyout_retry+80>:    jle    0x13c2d9 <copyout_retry+84>
0x13c2d7 <copyout_retry+82>:    mov    %edx,%eax
0x13c2d9 <copyout_retry+84>:    mov    %eax,%ecx
0x13c2db <copyout_retry+86>:    shr    $0x2,%ecx
0x13c2de <copyout_retry+89>:    repz movsl %ds:(%esi),%es:(%edi)
0x13c2e0 <copyout_retry+91>:    mov    %eax,%ecx
0x13c2e2 <copyout_retry+93>:    and    $0x3,%ecx
0x13c2e5 <copyout_retry+96>:    repz movsb %ds:(%esi),%es:(%edi)
0x13c2e7 <copyout_retry+98>:    sub    %eax,%edx
0x13c2e9 <copyout_retry+100>:   jg     0x13c285 <copyout_retry>
0x13c2eb <copyout_retry+102>:   xor    %eax,%eax
End of assembler dump.
(gdb) info regis
eax            0x1000   4096
ecx            0x3ff    1023
edx            0x1f87c  129148
ebx            0x1fbd0  130000
esp            0x379de5c        0x379de5c
ebp            0x379de90        0x379de90
esi            0x78e004 7921668
edi            0x4      4
eip            0x13c2de 0x13c2de
eflags         0x10216  66070
cs             0x10     16
ss             0x18     24
ds             0x120018 1179672
es             0x379001f        58261535
fs             0x10000  65536
gs             0x0      0
fctrl          0x0      0
fstat          0x0      0
ftag           0x0      0
fiseg          0x0      0
fioff          0x0      0
foseg          0x0      0
fooff          0x0      0
fop            0x0      0
xmm0           {f = {0x0, 0x0, 0x0, 0x0}}       {f = {0, 0, 0, 0}}
xmm1           {f = {0x0, 0x0, 0x0, 0x0}}       {f = {0, 0, 0, 0}}
xmm2           {f = {0x0, 0x0, 0x0, 0x0}}       {f = {0, 0, 0, 0}}
xmm3           {f = {0x0, 0x0, 0x0, 0x0}}       {f = {0, 0, 0, 0}}
xmm4           {f = {0x0, 0x0, 0x0, 0x0}}       {f = {0, 0, 0, 0}}
xmm5           {f = {0x0, 0x0, 0x0, 0x0}}       {f = {0, 0, 0, 0}}
xmm6           {f = {0x0, 0x0, 0x0, 0x0}}       {f = {0, 0, 0, 0}}
xmm7           {f = {0x0, 0x0, 0x0, 0x0}}       {f = {0, 0, 0, 0}}
mxcsr          0x0      0
(gdb)


Thanks,
Derek

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