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//===-- StopInfoMachException.cpp -------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
# include "StopInfoMachException.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
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# include "lldb/Breakpoint/Watchpoint.h"
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# include "lldb/Core/ArchSpec.h"
# include "lldb/Core/StreamString.h"
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# include "lldb/Symbol/Symbol.h"
# include "lldb/Target/DynamicLoader.h"
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# include "lldb/Target/ExecutionContext.h"
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# include "lldb/Target/Process.h"
# include "lldb/Target/RegisterContext.h"
# include "lldb/Target/Target.h"
# include "lldb/Target/Thread.h"
# include "lldb/Target/ThreadPlan.h"
# include "lldb/Target/UnixSignals.h"
using namespace lldb ;
using namespace lldb_private ;
const char *
StopInfoMachException : : GetDescription ( )
{
if ( m_description . empty ( ) & & m_value ! = 0 )
{
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ExecutionContext exe_ctx ( m_thread_wp . lock ( ) ) ;
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Target * target = exe_ctx . GetTargetPtr ( ) ;
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const llvm : : Triple : : ArchType cpu = target ? target - > GetArchitecture ( ) . GetMachine ( ) : llvm : : Triple : : UnknownArch ;
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const char * exc_desc = NULL ;
const char * code_label = " code " ;
const char * code_desc = NULL ;
const char * subcode_label = " subcode " ;
const char * subcode_desc = NULL ;
switch ( m_value )
{
case 1 : // EXC_BAD_ACCESS
exc_desc = " EXC_BAD_ACCESS " ;
subcode_label = " address " ;
switch ( cpu )
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{
case llvm : : Triple : : x86 :
case llvm : : Triple : : x86_64 :
switch ( m_exc_code )
{
case 0xd : code_desc = " EXC_I386_GPFLT " ; m_exc_data_count = 1 ; break ;
}
break ;
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case llvm : : Triple : : arm :
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case llvm : : Triple : : thumb :
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switch ( m_exc_code )
{
case 0x101 : code_desc = " EXC_ARM_DA_ALIGN " ; break ;
case 0x102 : code_desc = " EXC_ARM_DA_DEBUG " ; break ;
}
break ;
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case llvm : : Triple : : ppc :
case llvm : : Triple : : ppc64 :
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switch ( m_exc_code )
{
case 0x101 : code_desc = " EXC_PPC_VM_PROT_READ " ; break ;
case 0x102 : code_desc = " EXC_PPC_BADSPACE " ; break ;
case 0x103 : code_desc = " EXC_PPC_UNALIGNED " ; break ;
}
break ;
default :
break ;
}
break ;
case 2 : // EXC_BAD_INSTRUCTION
exc_desc = " EXC_BAD_INSTRUCTION " ;
switch ( cpu )
{
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case llvm : : Triple : : x86 :
case llvm : : Triple : : x86_64 :
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if ( m_exc_code = = 1 )
code_desc = " EXC_I386_INVOP " ;
break ;
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case llvm : : Triple : : ppc :
case llvm : : Triple : : ppc64 :
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switch ( m_exc_code )
{
case 1 : code_desc = " EXC_PPC_INVALID_SYSCALL " ; break ;
case 2 : code_desc = " EXC_PPC_UNIPL_INST " ; break ;
case 3 : code_desc = " EXC_PPC_PRIVINST " ; break ;
case 4 : code_desc = " EXC_PPC_PRIVREG " ; break ;
case 5 : code_desc = " EXC_PPC_TRACE " ; break ;
case 6 : code_desc = " EXC_PPC_PERFMON " ; break ;
}
break ;
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case llvm : : Triple : : arm :
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case llvm : : Triple : : thumb :
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if ( m_exc_code = = 1 )
code_desc = " EXC_ARM_UNDEFINED " ;
break ;
default :
break ;
}
break ;
case 3 : // EXC_ARITHMETIC
exc_desc = " EXC_ARITHMETIC " ;
switch ( cpu )
{
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case llvm : : Triple : : x86 :
case llvm : : Triple : : x86_64 :
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switch ( m_exc_code )
{
case 1 : code_desc = " EXC_I386_DIV " ; break ;
case 2 : code_desc = " EXC_I386_INTO " ; break ;
case 3 : code_desc = " EXC_I386_NOEXT " ; break ;
case 4 : code_desc = " EXC_I386_EXTOVR " ; break ;
case 5 : code_desc = " EXC_I386_EXTERR " ; break ;
case 6 : code_desc = " EXC_I386_EMERR " ; break ;
case 7 : code_desc = " EXC_I386_BOUND " ; break ;
case 8 : code_desc = " EXC_I386_SSEEXTERR " ; break ;
}
break ;
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case llvm : : Triple : : ppc :
case llvm : : Triple : : ppc64 :
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switch ( m_exc_code )
{
case 1 : code_desc = " EXC_PPC_OVERFLOW " ; break ;
case 2 : code_desc = " EXC_PPC_ZERO_DIVIDE " ; break ;
case 3 : code_desc = " EXC_PPC_FLT_INEXACT " ; break ;
case 4 : code_desc = " EXC_PPC_FLT_ZERO_DIVIDE " ; break ;
case 5 : code_desc = " EXC_PPC_FLT_UNDERFLOW " ; break ;
case 6 : code_desc = " EXC_PPC_FLT_OVERFLOW " ; break ;
case 7 : code_desc = " EXC_PPC_FLT_NOT_A_NUMBER " ; break ;
}
break ;
default :
break ;
}
break ;
case 4 : // EXC_EMULATION
exc_desc = " EXC_EMULATION " ;
break ;
case 5 : // EXC_SOFTWARE
exc_desc = " EXC_SOFTWARE " ;
if ( m_exc_code = = 0x10003 )
{
subcode_desc = " EXC_SOFT_SIGNAL " ;
subcode_label = " signo " ;
}
break ;
case 6 : // EXC_BREAKPOINT
{
exc_desc = " EXC_BREAKPOINT " ;
switch ( cpu )
{
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case llvm : : Triple : : x86 :
case llvm : : Triple : : x86_64 :
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switch ( m_exc_code )
{
Many improvements to the Platform base class and subclasses. The base Platform
class now implements the Host functionality for a lot of things that make
sense by default so that subclasses can check:
int
PlatformSubclass::Foo ()
{
if (IsHost())
return Platform::Foo (); // Let the platform base class do the host specific stuff
// Platform subclass specific code...
int result = ...
return result;
}
Added new functions to the platform:
virtual const char *Platform::GetUserName (uint32_t uid);
virtual const char *Platform::GetGroupName (uint32_t gid);
The user and group names are cached locally so that remote platforms can avoid
sending packets multiple times to resolve this information.
Added the parent process ID to the ProcessInfo class.
Added a new ProcessInfoMatch class which helps us to match processes up
and changed the Host layer over to using this new class. The new class allows
us to search for processs:
1 - by name (equal to, starts with, ends with, contains, and regex)
2 - by pid
3 - And further check for parent pid == value, uid == value, gid == value,
euid == value, egid == value, arch == value, parent == value.
This is all hookup up to the "platform process list" command which required
adding dumping routines to dump process information. If the Host class
implements the process lookup routines, you can now lists processes on
your local machine:
machine1.foo.com % lldb
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
94727 244 username usergroup username usergroup x86_64-apple-darwin Xcode
92742 92710 username usergroup username usergroup i386-apple-darwin debugserver
This of course also works remotely with the lldb-platform:
machine1.foo.com % lldb-platform --listen 1234
machine2.foo.com % lldb
(lldb) platform create remote-macosx
Platform: remote-macosx
Connected: no
(lldb) platform connect connect://localhost:1444
Platform: remote-macosx
Triple: x86_64-apple-darwin
OS Version: 10.6.7 (10J869)
Kernel: Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
Hostname: machine1.foo.com
Connected: yes
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99556 244 username usergroup username usergroup x86_64-apple-darwin trustevaluation
99548 65539 username usergroup username usergroup x86_64-apple-darwin lldb
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
The lldb-platform implements everything with the Host:: layer, so this should
"just work" for linux. I will probably be adding more stuff to the Host layer
for launching processes and attaching to processes so that this support should
eventually just work as well.
Modified the target to be able to be created with an architecture that differs
from the main executable. This is needed for iOS debugging since we can have
an "armv6" binary which can run on an "armv7" machine, so we want to be able
to do:
% lldb
(lldb) platform create remote-ios
(lldb) file --arch armv7 a.out
Where "a.out" is an armv6 executable. The platform then can correctly decide
to open all "armv7" images for all dependent shared libraries.
Modified the disassembly to show the current PC value. Example output:
(lldb) disassemble --frame
a.out`main:
0x1eb7: pushl %ebp
0x1eb8: movl %esp, %ebp
0x1eba: pushl %ebx
0x1ebb: subl $20, %esp
0x1ebe: calll 0x1ec3 ; main + 12 at test.c:18
0x1ec3: popl %ebx
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
0x1edb: leal 213(%ebx), %eax
0x1ee1: movl %eax, (%esp)
0x1ee4: calll 0x1f1e ; puts
0x1ee9: calll 0x1f0c ; getchar
0x1eee: movl $20, (%esp)
0x1ef5: calll 0x1e6a ; sleep_loop at test.c:6
0x1efa: movl $12, %eax
0x1eff: addl $20, %esp
0x1f02: popl %ebx
0x1f03: leave
0x1f04: ret
This can be handy when dealing with the new --line options that was recently
added:
(lldb) disassemble --line
a.out`main + 13 at test.c:19
18 {
-> 19 printf("Process: %i\n\n", getpid());
20 puts("Press any key to continue..."); getchar();
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
Modified the ModuleList to have a lookup based solely on a UUID. Since the
UUID is typically the MD5 checksum of a binary image, there is no need
to give the path and architecture when searching for a pre-existing
image in an image list.
Now that we support remote debugging a bit better, our lldb_private::Module
needs to be able to track what the original path for file was as the platform
knows it, as well as where the file is locally. The module has the two
following functions to retrieve both paths:
const FileSpec &Module::GetFileSpec () const;
const FileSpec &Module::GetPlatformFileSpec () const;
llvm-svn: 128563
2011-03-31 02:16:51 +08:00
case 1 : code_desc = " EXC_I386_SGL " ; break ;
case 2 : code_desc = " EXC_I386_BPT " ; break ;
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}
break ;
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case llvm : : Triple : : ppc :
case llvm : : Triple : : ppc64 :
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switch ( m_exc_code )
{
Many improvements to the Platform base class and subclasses. The base Platform
class now implements the Host functionality for a lot of things that make
sense by default so that subclasses can check:
int
PlatformSubclass::Foo ()
{
if (IsHost())
return Platform::Foo (); // Let the platform base class do the host specific stuff
// Platform subclass specific code...
int result = ...
return result;
}
Added new functions to the platform:
virtual const char *Platform::GetUserName (uint32_t uid);
virtual const char *Platform::GetGroupName (uint32_t gid);
The user and group names are cached locally so that remote platforms can avoid
sending packets multiple times to resolve this information.
Added the parent process ID to the ProcessInfo class.
Added a new ProcessInfoMatch class which helps us to match processes up
and changed the Host layer over to using this new class. The new class allows
us to search for processs:
1 - by name (equal to, starts with, ends with, contains, and regex)
2 - by pid
3 - And further check for parent pid == value, uid == value, gid == value,
euid == value, egid == value, arch == value, parent == value.
This is all hookup up to the "platform process list" command which required
adding dumping routines to dump process information. If the Host class
implements the process lookup routines, you can now lists processes on
your local machine:
machine1.foo.com % lldb
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
94727 244 username usergroup username usergroup x86_64-apple-darwin Xcode
92742 92710 username usergroup username usergroup i386-apple-darwin debugserver
This of course also works remotely with the lldb-platform:
machine1.foo.com % lldb-platform --listen 1234
machine2.foo.com % lldb
(lldb) platform create remote-macosx
Platform: remote-macosx
Connected: no
(lldb) platform connect connect://localhost:1444
Platform: remote-macosx
Triple: x86_64-apple-darwin
OS Version: 10.6.7 (10J869)
Kernel: Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
Hostname: machine1.foo.com
Connected: yes
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99556 244 username usergroup username usergroup x86_64-apple-darwin trustevaluation
99548 65539 username usergroup username usergroup x86_64-apple-darwin lldb
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
The lldb-platform implements everything with the Host:: layer, so this should
"just work" for linux. I will probably be adding more stuff to the Host layer
for launching processes and attaching to processes so that this support should
eventually just work as well.
Modified the target to be able to be created with an architecture that differs
from the main executable. This is needed for iOS debugging since we can have
an "armv6" binary which can run on an "armv7" machine, so we want to be able
to do:
% lldb
(lldb) platform create remote-ios
(lldb) file --arch armv7 a.out
Where "a.out" is an armv6 executable. The platform then can correctly decide
to open all "armv7" images for all dependent shared libraries.
Modified the disassembly to show the current PC value. Example output:
(lldb) disassemble --frame
a.out`main:
0x1eb7: pushl %ebp
0x1eb8: movl %esp, %ebp
0x1eba: pushl %ebx
0x1ebb: subl $20, %esp
0x1ebe: calll 0x1ec3 ; main + 12 at test.c:18
0x1ec3: popl %ebx
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
0x1edb: leal 213(%ebx), %eax
0x1ee1: movl %eax, (%esp)
0x1ee4: calll 0x1f1e ; puts
0x1ee9: calll 0x1f0c ; getchar
0x1eee: movl $20, (%esp)
0x1ef5: calll 0x1e6a ; sleep_loop at test.c:6
0x1efa: movl $12, %eax
0x1eff: addl $20, %esp
0x1f02: popl %ebx
0x1f03: leave
0x1f04: ret
This can be handy when dealing with the new --line options that was recently
added:
(lldb) disassemble --line
a.out`main + 13 at test.c:19
18 {
-> 19 printf("Process: %i\n\n", getpid());
20 puts("Press any key to continue..."); getchar();
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
Modified the ModuleList to have a lookup based solely on a UUID. Since the
UUID is typically the MD5 checksum of a binary image, there is no need
to give the path and architecture when searching for a pre-existing
image in an image list.
Now that we support remote debugging a bit better, our lldb_private::Module
needs to be able to track what the original path for file was as the platform
knows it, as well as where the file is locally. The module has the two
following functions to retrieve both paths:
const FileSpec &Module::GetFileSpec () const;
const FileSpec &Module::GetPlatformFileSpec () const;
llvm-svn: 128563
2011-03-31 02:16:51 +08:00
case 1 : code_desc = " EXC_PPC_BREAKPOINT " ; break ;
2010-08-04 09:40:35 +08:00
}
break ;
2011-02-23 08:35:02 +08:00
case llvm : : Triple : : arm :
2015-08-21 08:13:37 +08:00
case llvm : : Triple : : thumb :
2010-08-04 09:40:35 +08:00
switch ( m_exc_code )
{
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case 0x101 : code_desc = " EXC_ARM_DA_ALIGN " ; break ;
case 0x102 : code_desc = " EXC_ARM_DA_DEBUG " ; break ;
Many improvements to the Platform base class and subclasses. The base Platform
class now implements the Host functionality for a lot of things that make
sense by default so that subclasses can check:
int
PlatformSubclass::Foo ()
{
if (IsHost())
return Platform::Foo (); // Let the platform base class do the host specific stuff
// Platform subclass specific code...
int result = ...
return result;
}
Added new functions to the platform:
virtual const char *Platform::GetUserName (uint32_t uid);
virtual const char *Platform::GetGroupName (uint32_t gid);
The user and group names are cached locally so that remote platforms can avoid
sending packets multiple times to resolve this information.
Added the parent process ID to the ProcessInfo class.
Added a new ProcessInfoMatch class which helps us to match processes up
and changed the Host layer over to using this new class. The new class allows
us to search for processs:
1 - by name (equal to, starts with, ends with, contains, and regex)
2 - by pid
3 - And further check for parent pid == value, uid == value, gid == value,
euid == value, egid == value, arch == value, parent == value.
This is all hookup up to the "platform process list" command which required
adding dumping routines to dump process information. If the Host class
implements the process lookup routines, you can now lists processes on
your local machine:
machine1.foo.com % lldb
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
94727 244 username usergroup username usergroup x86_64-apple-darwin Xcode
92742 92710 username usergroup username usergroup i386-apple-darwin debugserver
This of course also works remotely with the lldb-platform:
machine1.foo.com % lldb-platform --listen 1234
machine2.foo.com % lldb
(lldb) platform create remote-macosx
Platform: remote-macosx
Connected: no
(lldb) platform connect connect://localhost:1444
Platform: remote-macosx
Triple: x86_64-apple-darwin
OS Version: 10.6.7 (10J869)
Kernel: Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
Hostname: machine1.foo.com
Connected: yes
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99556 244 username usergroup username usergroup x86_64-apple-darwin trustevaluation
99548 65539 username usergroup username usergroup x86_64-apple-darwin lldb
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
The lldb-platform implements everything with the Host:: layer, so this should
"just work" for linux. I will probably be adding more stuff to the Host layer
for launching processes and attaching to processes so that this support should
eventually just work as well.
Modified the target to be able to be created with an architecture that differs
from the main executable. This is needed for iOS debugging since we can have
an "armv6" binary which can run on an "armv7" machine, so we want to be able
to do:
% lldb
(lldb) platform create remote-ios
(lldb) file --arch armv7 a.out
Where "a.out" is an armv6 executable. The platform then can correctly decide
to open all "armv7" images for all dependent shared libraries.
Modified the disassembly to show the current PC value. Example output:
(lldb) disassemble --frame
a.out`main:
0x1eb7: pushl %ebp
0x1eb8: movl %esp, %ebp
0x1eba: pushl %ebx
0x1ebb: subl $20, %esp
0x1ebe: calll 0x1ec3 ; main + 12 at test.c:18
0x1ec3: popl %ebx
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
0x1edb: leal 213(%ebx), %eax
0x1ee1: movl %eax, (%esp)
0x1ee4: calll 0x1f1e ; puts
0x1ee9: calll 0x1f0c ; getchar
0x1eee: movl $20, (%esp)
0x1ef5: calll 0x1e6a ; sleep_loop at test.c:6
0x1efa: movl $12, %eax
0x1eff: addl $20, %esp
0x1f02: popl %ebx
0x1f03: leave
0x1f04: ret
This can be handy when dealing with the new --line options that was recently
added:
(lldb) disassemble --line
a.out`main + 13 at test.c:19
18 {
-> 19 printf("Process: %i\n\n", getpid());
20 puts("Press any key to continue..."); getchar();
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
Modified the ModuleList to have a lookup based solely on a UUID. Since the
UUID is typically the MD5 checksum of a binary image, there is no need
to give the path and architecture when searching for a pre-existing
image in an image list.
Now that we support remote debugging a bit better, our lldb_private::Module
needs to be able to track what the original path for file was as the platform
knows it, as well as where the file is locally. The module has the two
following functions to retrieve both paths:
const FileSpec &Module::GetFileSpec () const;
const FileSpec &Module::GetPlatformFileSpec () const;
llvm-svn: 128563
2011-03-31 02:16:51 +08:00
case 1 : code_desc = " EXC_ARM_BREAKPOINT " ; break ;
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// FIXME temporary workaround, exc_code 0 does not really mean EXC_ARM_BREAKPOINT
case 0 : code_desc = " EXC_ARM_BREAKPOINT " ; break ;
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}
break ;
default :
break ;
}
}
break ;
case 7 :
exc_desc = " EXC_SYSCALL " ;
break ;
case 8 :
exc_desc = " EXC_MACH_SYSCALL " ;
break ;
case 9 :
exc_desc = " EXC_RPC_ALERT " ;
break ;
case 10 :
exc_desc = " EXC_CRASH " ;
break ;
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case 11 :
exc_desc = " EXC_RESOURCE " ;
break ;
case 12 :
exc_desc = " EXC_GUARD " ;
break ;
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}
StreamString strm ;
if ( exc_desc )
strm . PutCString ( exc_desc ) ;
else
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strm . Printf ( " EXC_??? (% " PRIu64 " ) " , m_value ) ;
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if ( m_exc_data_count > = 1 )
{
if ( code_desc )
strm . Printf ( " (%s=%s " , code_label , code_desc ) ;
else
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strm . Printf ( " (%s=% " PRIu64 , code_label , m_exc_code ) ;
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}
if ( m_exc_data_count > = 2 )
{
if ( subcode_desc )
strm . Printf ( " , %s=%s " , subcode_label , subcode_desc ) ;
else
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strm . Printf ( " , %s=0x% " PRIx64 , subcode_label , m_exc_subcode ) ;
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}
if ( m_exc_data_count > 0 )
strm . PutChar ( ' ) ' ) ;
m_description . swap ( strm . GetString ( ) ) ;
}
return m_description . c_str ( ) ;
}
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2010-08-04 09:40:35 +08:00
StopInfoSP
StopInfoMachException : : CreateStopReasonWithMachException
(
Thread & thread ,
uint32_t exc_type ,
uint32_t exc_data_count ,
uint64_t exc_code ,
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uint64_t exc_sub_code ,
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uint64_t exc_sub_sub_code ,
bool pc_already_adjusted ,
bool adjust_pc_if_needed
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)
{
if ( exc_type ! = 0 )
{
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uint32_t pc_decrement = 0 ;
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ExecutionContext exe_ctx ( thread . shared_from_this ( ) ) ;
Target * target = exe_ctx . GetTargetPtr ( ) ;
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const llvm : : Triple : : ArchType cpu = target ? target - > GetArchitecture ( ) . GetMachine ( ) : llvm : : Triple : : UnknownArch ;
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switch ( exc_type )
{
case 1 : // EXC_BAD_ACCESS
break ;
case 2 : // EXC_BAD_INSTRUCTION
switch ( cpu )
{
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case llvm : : Triple : : ppc :
case llvm : : Triple : : ppc64 :
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switch ( exc_code )
{
case 1 : // EXC_PPC_INVALID_SYSCALL
case 2 : // EXC_PPC_UNIPL_INST
case 3 : // EXC_PPC_PRIVINST
case 4 : // EXC_PPC_PRIVREG
break ;
case 5 : // EXC_PPC_TRACE
return StopInfo : : CreateStopReasonToTrace ( thread ) ;
case 6 : // EXC_PPC_PERFMON
break ;
}
break ;
default :
break ;
}
break ;
case 3 : // EXC_ARITHMETIC
case 4 : // EXC_EMULATION
break ;
case 5 : // EXC_SOFTWARE
if ( exc_code = = 0x10003 ) // EXC_SOFT_SIGNAL
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{
if ( exc_sub_code = = 5 )
{
// On MacOSX, a SIGTRAP can signify that a process has called
// exec, so we should check with our dynamic loader to verify.
ProcessSP process_sp ( thread . GetProcess ( ) ) ;
if ( process_sp )
{
DynamicLoader * dynamic_loader = process_sp - > GetDynamicLoader ( ) ;
if ( dynamic_loader & & dynamic_loader - > ProcessDidExec ( ) )
{
// The program was re-exec'ed
return StopInfo : : CreateStopReasonWithExec ( thread ) ;
}
// if (!process_did_exec)
// {
// // We have a SIGTRAP, make sure we didn't exec by checking
// // for the PC being at "_dyld_start"...
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// lldb::StackFrameSP frame_sp (thread.GetStackFrameAtIndex(0));
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// if (frame_sp)
// {
// const Symbol *symbol = frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol;
// if (symbol)
// {
// if (symbol->GetName() == ConstString("_dyld_start"))
// process_did_exec = true;
// }
// }
// }
}
}
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return StopInfo : : CreateStopReasonWithSignal ( thread , exc_sub_code ) ;
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}
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break ;
case 6 : // EXC_BREAKPOINT
{
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bool is_actual_breakpoint = false ;
bool is_trace_if_actual_breakpoint_missing = false ;
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switch ( cpu )
{
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case llvm : : Triple : : x86 :
case llvm : : Triple : : x86_64 :
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if ( exc_code = = 1 ) // EXC_I386_SGL
{
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if ( ! exc_sub_code )
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{
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// This looks like a plain trap.
// Have to check if there is a breakpoint here as well. When you single-step onto a trap,
// the single step stops you not to trap. Since we also do that check below, let's just use
// that logic.
is_actual_breakpoint = true ;
is_trace_if_actual_breakpoint_missing = true ;
}
else
{
// It's a watchpoint, then.
// The exc_sub_code indicates the data break address.
lldb : : WatchpointSP wp_sp ;
if ( target )
wp_sp = target - > GetWatchpointList ( ) . FindByAddress ( ( lldb : : addr_t ) exc_sub_code ) ;
if ( wp_sp & & wp_sp - > IsEnabled ( ) )
{
// Debugserver may piggyback the hardware index of the fired watchpoint in the exception data.
// Set the hardware index if that's the case.
if ( exc_data_count > = 3 )
wp_sp - > SetHardwareIndex ( ( uint32_t ) exc_sub_sub_code ) ;
return StopInfo : : CreateStopReasonWithWatchpointID ( thread , wp_sp - > GetID ( ) ) ;
}
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}
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}
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else if ( exc_code = = 2 | | // EXC_I386_BPT
exc_code = = 3 ) // EXC_I386_BPTFLT
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{
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// KDP returns EXC_I386_BPTFLT for trace breakpoints
if ( exc_code = = 3 )
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is_trace_if_actual_breakpoint_missing = true ;
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is_actual_breakpoint = true ;
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if ( ! pc_already_adjusted )
pc_decrement = 1 ;
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}
break ;
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case llvm : : Triple : : ppc :
case llvm : : Triple : : ppc64 :
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is_actual_breakpoint = exc_code = = 1 ; // EXC_PPC_BREAKPOINT
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break ;
2011-02-23 08:35:02 +08:00
case llvm : : Triple : : arm :
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case llvm : : Triple : : thumb :
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if ( exc_code = = 0x102 ) // EXC_ARM_DA_DEBUG
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{
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// It's a watchpoint, then, if the exc_sub_code indicates a known/enabled
// data break address from our watchpoint list.
lldb : : WatchpointSP wp_sp ;
if ( target )
wp_sp = target - > GetWatchpointList ( ) . FindByAddress ( ( lldb : : addr_t ) exc_sub_code ) ;
if ( wp_sp & & wp_sp - > IsEnabled ( ) )
{
// Debugserver may piggyback the hardware index of the fired watchpoint in the exception data.
// Set the hardware index if that's the case.
if ( exc_data_count > = 3 )
wp_sp - > SetHardwareIndex ( ( uint32_t ) exc_sub_sub_code ) ;
return StopInfo : : CreateStopReasonWithWatchpointID ( thread , wp_sp - > GetID ( ) ) ;
}
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else
{
is_actual_breakpoint = true ;
is_trace_if_actual_breakpoint_missing = true ;
}
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}
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else if ( exc_code = = 1 ) // EXC_ARM_BREAKPOINT
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{
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is_actual_breakpoint = true ;
is_trace_if_actual_breakpoint_missing = true ;
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}
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else if ( exc_code = = 0 ) // FIXME not EXC_ARM_BREAKPOINT but a kernel is currently returning this so accept it as indicating a breakpoint until the kernel is fixed
{
is_actual_breakpoint = true ;
is_trace_if_actual_breakpoint_missing = true ;
}
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break ;
2014-07-23 22:37:35 +08:00
case llvm : : Triple : : aarch64 :
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{
if ( exc_code = = 1 & & exc_sub_code = = 0 ) // EXC_ARM_BREAKPOINT
{
// This is hit when we single instruction step aka MDSCR_EL1 SS bit 0 is set
return StopInfo : : CreateStopReasonToTrace ( thread ) ;
}
if ( exc_code = = 0x102 ) // EXC_ARM_DA_DEBUG
{
// It's a watchpoint, then, if the exc_sub_code indicates a known/enabled
// data break address from our watchpoint list.
lldb : : WatchpointSP wp_sp ;
if ( target )
wp_sp = target - > GetWatchpointList ( ) . FindByAddress ( ( lldb : : addr_t ) exc_sub_code ) ;
if ( wp_sp & & wp_sp - > IsEnabled ( ) )
{
// Debugserver may piggyback the hardware index of the fired watchpoint in the exception data.
// Set the hardware index if that's the case.
if ( exc_data_count > = 3 )
wp_sp - > SetHardwareIndex ( ( uint32_t ) exc_sub_sub_code ) ;
return StopInfo : : CreateStopReasonWithWatchpointID ( thread , wp_sp - > GetID ( ) ) ;
}
// EXC_ARM_DA_DEBUG seems to be reused for EXC_BREAKPOINT as well as EXC_BAD_ACCESS
if ( thread . GetTemporaryResumeState ( ) = = eStateStepping )
return StopInfo : : CreateStopReasonToTrace ( thread ) ;
}
// It looks like exc_sub_code has the 4 bytes of the instruction that triggered the
// exception, i.e. our breakpoint opcode
is_actual_breakpoint = exc_code = = 1 ;
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break ;
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}
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default :
break ;
}
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if ( is_actual_breakpoint )
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{
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RegisterContextSP reg_ctx_sp ( thread . GetRegisterContext ( ) ) ;
addr_t pc = reg_ctx_sp - > GetPC ( ) - pc_decrement ;
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ProcessSP process_sp ( thread . CalculateProcess ( ) ) ;
lldb : : BreakpointSiteSP bp_site_sp ;
if ( process_sp )
bp_site_sp = process_sp - > GetBreakpointSiteList ( ) . FindByAddress ( pc ) ;
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if ( bp_site_sp & & bp_site_sp - > IsEnabled ( ) )
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{
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// Update the PC if we were asked to do so, but only do
// so if we find a breakpoint that we know about cause
// this could be a trap instruction in the code
if ( pc_decrement > 0 & & adjust_pc_if_needed )
reg_ctx_sp - > SetPC ( pc ) ;
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// If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread,
// we can just report no reason. We don't need to worry about stepping over the breakpoint here, that
// will be taken care of when the thread resumes and notices that there's a breakpoint under the pc.
2015-04-08 06:17:41 +08:00
// If we have an operating system plug-in, we might have set a thread specific breakpoint using the
// operating system thread ID, so we can't make any assumptions about the thread ID so we must always
// report the breakpoint regardless of the thread.
if ( bp_site_sp - > ValidForThisThread ( & thread ) | | thread . GetProcess ( ) - > GetOperatingSystem ( ) ! = NULL )
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return StopInfo : : CreateStopReasonWithBreakpointSiteID ( thread , bp_site_sp - > GetID ( ) ) ;
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else
return StopInfoSP ( ) ;
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}
2015-04-08 06:17:41 +08:00
2012-10-27 10:52:04 +08:00
// Don't call this a trace if we weren't single stepping this thread.
2013-02-15 10:06:30 +08:00
if ( is_trace_if_actual_breakpoint_missing & & thread . GetTemporaryResumeState ( ) = = eStateStepping )
Many improvements to the Platform base class and subclasses. The base Platform
class now implements the Host functionality for a lot of things that make
sense by default so that subclasses can check:
int
PlatformSubclass::Foo ()
{
if (IsHost())
return Platform::Foo (); // Let the platform base class do the host specific stuff
// Platform subclass specific code...
int result = ...
return result;
}
Added new functions to the platform:
virtual const char *Platform::GetUserName (uint32_t uid);
virtual const char *Platform::GetGroupName (uint32_t gid);
The user and group names are cached locally so that remote platforms can avoid
sending packets multiple times to resolve this information.
Added the parent process ID to the ProcessInfo class.
Added a new ProcessInfoMatch class which helps us to match processes up
and changed the Host layer over to using this new class. The new class allows
us to search for processs:
1 - by name (equal to, starts with, ends with, contains, and regex)
2 - by pid
3 - And further check for parent pid == value, uid == value, gid == value,
euid == value, egid == value, arch == value, parent == value.
This is all hookup up to the "platform process list" command which required
adding dumping routines to dump process information. If the Host class
implements the process lookup routines, you can now lists processes on
your local machine:
machine1.foo.com % lldb
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
94727 244 username usergroup username usergroup x86_64-apple-darwin Xcode
92742 92710 username usergroup username usergroup i386-apple-darwin debugserver
This of course also works remotely with the lldb-platform:
machine1.foo.com % lldb-platform --listen 1234
machine2.foo.com % lldb
(lldb) platform create remote-macosx
Platform: remote-macosx
Connected: no
(lldb) platform connect connect://localhost:1444
Platform: remote-macosx
Triple: x86_64-apple-darwin
OS Version: 10.6.7 (10J869)
Kernel: Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
Hostname: machine1.foo.com
Connected: yes
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99556 244 username usergroup username usergroup x86_64-apple-darwin trustevaluation
99548 65539 username usergroup username usergroup x86_64-apple-darwin lldb
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
The lldb-platform implements everything with the Host:: layer, so this should
"just work" for linux. I will probably be adding more stuff to the Host layer
for launching processes and attaching to processes so that this support should
eventually just work as well.
Modified the target to be able to be created with an architecture that differs
from the main executable. This is needed for iOS debugging since we can have
an "armv6" binary which can run on an "armv7" machine, so we want to be able
to do:
% lldb
(lldb) platform create remote-ios
(lldb) file --arch armv7 a.out
Where "a.out" is an armv6 executable. The platform then can correctly decide
to open all "armv7" images for all dependent shared libraries.
Modified the disassembly to show the current PC value. Example output:
(lldb) disassemble --frame
a.out`main:
0x1eb7: pushl %ebp
0x1eb8: movl %esp, %ebp
0x1eba: pushl %ebx
0x1ebb: subl $20, %esp
0x1ebe: calll 0x1ec3 ; main + 12 at test.c:18
0x1ec3: popl %ebx
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
0x1edb: leal 213(%ebx), %eax
0x1ee1: movl %eax, (%esp)
0x1ee4: calll 0x1f1e ; puts
0x1ee9: calll 0x1f0c ; getchar
0x1eee: movl $20, (%esp)
0x1ef5: calll 0x1e6a ; sleep_loop at test.c:6
0x1efa: movl $12, %eax
0x1eff: addl $20, %esp
0x1f02: popl %ebx
0x1f03: leave
0x1f04: ret
This can be handy when dealing with the new --line options that was recently
added:
(lldb) disassemble --line
a.out`main + 13 at test.c:19
18 {
-> 19 printf("Process: %i\n\n", getpid());
20 puts("Press any key to continue..."); getchar();
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
Modified the ModuleList to have a lookup based solely on a UUID. Since the
UUID is typically the MD5 checksum of a binary image, there is no need
to give the path and architecture when searching for a pre-existing
image in an image list.
Now that we support remote debugging a bit better, our lldb_private::Module
needs to be able to track what the original path for file was as the platform
knows it, as well as where the file is locally. The module has the two
following functions to retrieve both paths:
const FileSpec &Module::GetFileSpec () const;
const FileSpec &Module::GetPlatformFileSpec () const;
llvm-svn: 128563
2011-03-31 02:16:51 +08:00
{
return StopInfo : : CreateStopReasonToTrace ( thread ) ;
}
2010-08-04 09:40:35 +08:00
}
}
break ;
case 7 : // EXC_SYSCALL
case 8 : // EXC_MACH_SYSCALL
case 9 : // EXC_RPC_ALERT
case 10 : // EXC_CRASH
break ;
}
return StopInfoSP ( new StopInfoMachException ( thread , exc_type , exc_data_count , exc_code , exc_sub_code ) ) ;
}
return StopInfoSP ( ) ;
}