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5 Commits

Author SHA1 Message Date
Zachary Turner 97206d5727 Rename Error -> Status. 
This renames the LLDB error class to Status, as discussed
on the lldb-dev mailing list.

A change of this magnitude cannot easily be done without
find and replace, but that has potential to catch unwanted
occurrences of common strings such as "Error".  Every effort
was made to find all the obvious things such as the word "Error"
appearing in a string, etc, but it's possible there are still
some lingering occurences left around.  Hopefully nothing too
serious.

llvm-svn: 302872
 2017-05-12 04:51:55 +00:00
Kamil Rytarowski 36e23ecad0 Introduce FPR and Debug Registers/NetBSD/amd64 support 
Summary:
This code offers Debug Registers (80386) model in LLDB/amd64.

This is initial support and has one issue that will be addressed later,
Debug Register trap (TRAP_DBREG) is registered as (TRAP_TRACE)
for unknown reason.  On the other hand this works good enough to
move on and leave this bug to be squashed later.

Improve the NativeProcessNetBSD::ReinitializeThreads() function,
stop setting inside it SetStoppedByExec(). This fixes incorrect
stop reason on attaching (SetStoppedBySignal(SIGSTOP)).

This commits also has no functional style improvements from
clang-format.

This code also ships with FXSAVE support on NetBSD.

Demo:

```
$ lldb ./watch                                                                                                                                      
(lldb) target create "./watch"
Current executable set to './watch' (x86_64).
(lldb) b main
Breakpoint 1: where = watch`main + 15 at watch.c:8, address = 0x000000000040087f
(lldb) r
Process 1573 launched: './watch' (x86_64)
Process 1573 stopped
* thread #1, stop reason = breakpoint 1.1
    frame #0: 0x000000000040087f watch`main(argc=1, argv=0x00007f7fffa12b88) at watch.c:8
   5    {
   6            int i, j, k;
   7    
-> 8            for (i = 0; i < 3; i++)
   9                    for (j = 0; j < 3; j++)
   10                           for (k = 0; k < 3; k++)
   11                                   printf("Hello world! i=%d j=%d k=%d\n", i, j, k);
(lldb) watch set var i
Watchpoint created: Watchpoint 1: addr = 0x7f7fffa12b4c size = 4 state = enabled type = w
    declare @ '/public/lldb_devel/watch.c:6'
    watchpoint spec = 'i'
    new value: 0
(lldb) c
Process 1573 resuming
Hello world! i=0 j=0 k=0
Hello world! i=0 j=0 k=1
Hello world! i=0 j=0 k=2
Hello world! i=0 j=1 k=0
Hello world! i=0 j=1 k=1
Hello world! i=0 j=1 k=2
Hello world! i=0 j=2 k=0
Hello world! i=0 j=2 k=1
Hello world! i=0 j=2 k=2
Process 1573 stopped
* thread #1, stop reason = trace
    frame #0: 0x00000000004008cc watch`main(argc=1, argv=0x00007f7fffa12b88) at watch.c:8
   5    {
   6            int i, j, k;
   7    
-> 8            for (i = 0; i < 3; i++)
   9                    for (j = 0; j < 3; j++)
   10                           for (k = 0; k < 3; k++)
   11                                   printf("Hello world! i=%d j=%d k=%d\n", i, j, k)
```

FPR (in another program using libm)

```
(lldb) register read --all
General Purpose Registers:
       rax = 0x000000000000001c
       rbx = 0x00007f7fff1d4fe0
       rcx = 0x000000000000000c
       rdx = 0x0000000000000002
       rdi = 0x0000746711d5b018  __sF + 152
       rsi = 0x0000000000000001
       rbp = 0x00007f7fff1d3d80
       rsp = 0x00007f7fff1d3d60
        r8 = 0x00007f7fff1d3470
        r9 = 0x0000000000000000
       r10 = 0x0000000000000001
       r11 = 0x0000000000000202
       r12 = 0x00007f7fff1d3da0
       r13 = 0x00007d8ad2d88500
       r14 = 0x0000000000000002
       r15 = 0x00007f7fffa627e0
       rip = 0x00000000004009e9  fpr`main + 217 at fpr.c:15
    rflags = 0x0000000000000202
        cs = 0x0000000000000047
        fs = 0x0000000000000000
        gs = 0x0000000000000000
        ss = 0x000000000000003f
        ds = 0x000000000000003f
        es = 0x000000000000003f
       eax = 0x0000001c
       ebx = 0xff1d4fe0
       ecx = 0x0000000c
       edx = 0x00000002
       edi = 0x11d5b018
       esi = 0x00000001
       ebp = 0xff1d3d80
       esp = 0xff1d3d60
       r8d = 0xff1d3470
       r9d = 0x00000000
      r10d = 0x00000001
      r11d = 0x00000202
      r12d = 0xff1d3da0
      r13d = 0xd2d88500
      r14d = 0x00000002
      r15d = 0xffa627e0
        ax = 0x001c
        bx = 0x4fe0
        cx = 0x000c
        dx = 0x0002
        di = 0xb018
        si = 0x0001
        bp = 0x3d80
        sp = 0x3d60
       r8w = 0x3470
       r9w = 0x0000
      r10w = 0x0001
      r11w = 0x0202
      r12w = 0x3da0
      r13w = 0x8500
      r14w = 0x0002
      r15w = 0x27e0
        ah = 0x00
        bh = 0x4f
        ch = 0x00
        dh = 0x00
        al = 0x1c
        bl = 0xe0
        cl = 0x0c
        dl = 0x02
       dil = 0x18
       sil = 0x01
       bpl = 0x80
       spl = 0x60
       r8l = 0x70
       r9l = 0x00
      r10l = 0x01
      r11l = 0x02
      r12l = 0xa0
      r13l = 0x00
      r14l = 0x02
      r15l = 0xe0

unknown:
     fctrl = 0x037f
     fstat = 0x0220
      ftag = 0x00
       fop = 0x0000
     fiseg = 0x11e1a52c
     fioff = 0x11e1a52c
     foseg = 0xff1d3d54
     fooff = 0xff1d3d54
     mxcsr = 0x00001fa0
  mxcsrmask = 0x0000ffff
       st0 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
       st1 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
       st2 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
       st3 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
       st4 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
       st5 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
       st6 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
       st7 = {0xa5 0xdb 0x2d 0xbd 0x93 0xae 0xb9 0xfe 0xfe 0x3f}
       mm0 = 0x3fe9d13800000000
       mm1 = 0x3e0485fcce89c000
       mm2 = 0x3fefd735e0000000
       mm3 = 0x0000000000000000
       mm4 = 0x3fe0000000000000
       mm5 = 0x3fe00000005217f3
       mm6 = 0x0000000000000000
       mm7 = 0x3fefd735e0000000
      xmm0 = {0x00 0x00 0x00 0x00 0x38 0xd1 0xe9 0x3f 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm1 = {0x00 0xc0 0x89 0xce 0xfc 0x85 0x04 0x3e 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm2 = {0x00 0x00 0x00 0xe0 0x35 0xd7 0xef 0x3f 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm3 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm4 = {0x00 0x00 0x00 0x00 0x00 0x00 0xe0 0x3f 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm5 = {0xf3 0x17 0x52 0x00 0x00 0x00 0xe0 0x3f 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm6 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm7 = {0x00 0x00 0x00 0xe0 0x35 0xd7 0xef 0x3f 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm8 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
      xmm9 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
     xmm10 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
     xmm11 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
     xmm12 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
     xmm13 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
     xmm14 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
     xmm15 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
       dr0 = 0x0000000000000000
       dr1 = 0x0000000000000000
       dr2 = 0x0000000000000000
       dr3 = 0x0000000000000000
       dr4 = 0x0000000000000000
       dr5 = 0x0000000000000000
       dr6 = 0x00000000ffff0ff0
       dr7 = 0x0000000000000400
22 registers were unavailable.
```

Sponsored by <The NetBSD Foundation>

Reviewers: labath, emaste, joerg, kettenis

Reviewed By: labath

Subscribers: #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D32080

llvm-svn: 300548
 2017-04-18 12:53:35 +00:00
Kamil Rytarowski 3eef2b5e96 Battery of NetBSD support improvements 
Summary:
Include initial support for:
 - single step mode (PT_STEP)
 - single step trap handling (TRAP_TRACE)
 - exec() trap (TRAP_EXEC)
 - add placeholder interfaces for FPR
 - initial code for NetBSD core(5) files
 - minor tweaks

While there improve style of altered elf-core/ files.

This code raises the number of passing tests on NetBSD to around 50% (600+/1200+).

The introduced code is subject to improve afterwards for additional features and bug fixes.

Sponsored by <The NetBSD Foundation>

Reviewers: labath, joerg, emaste, kettenis

Reviewed By: labath

Subscribers: srhines, #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D31450

llvm-svn: 299109
 2017-03-30 20:25:29 +00:00
Kamil Rytarowski f07a9995e8 Add support for tracing hello-world application on NetBSD 
Summary:
This patch is a stripped down from features a NetBSD process
code (patch is kept under 2k LOC). This code has assumption that
there is only one thread within a debugged process. The only
debugger trap supported is software breakpoint (TRAP_BRKPT).
The generic platform code requires to add dummy function for
watchpoints etc. These functions are currently empty.
This code is not the final platform support as is and it's treated as
a base to extend, refactor and address issues afterwards.

Supported features:
 - handle software breakpoints,
 - correctly attach to a tracee,
 - support NetBSD specific ptrace(2),
 - monitor process termination,
 - monitor SIGTRAP events,
 - monitor SIGSTOP events,
 - monitor other signals events,
 - resume the whole process,
 - get memory region info perms,
 - read memory from tracee,
 - write memory to tracee,
 - read ELF AUXV,
 - x86_64 GPR read and write code

For the generic framework include:
 - halt,
 - detach,
 - signal,
 - kill,
 - allocatememory,
 - deallocatememory,
 - update threads,
 - getarchitecture,
 - getfileloadaddress,
 - and others.

This code has preliminary AddThread code.

Out of interest in this patch:
 - exec() traps,
 - hardware debug register traps,
 - single step trap,
 - thread creation/termination trap,
 - process fork(2), vfork(2) and vfork(2) done traps,
 - syscall entry and exit trap,
 - threads,
 - FPR registers,
 - retrieving tracee's thread name,
 - non x86_64 support.

This code can be used to start a hello world application and trace it.

This code can be used by other BSD systems as a starting point to get similar
capabilities.

Sponsored by <The NetBSD Foundation>

Reviewers: emaste, joerg, kettenis, labath

Subscribers: mgorny, #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D31374

llvm-svn: 298953
 2017-03-28 22:43:17 +00:00
Kamil Rytarowski 1a3d19dd25 Add stub for PluginProcessNetBSD 
Summary:
This is the base for introduction of further features to support Process Tracing on NetBSD, in local and remote setup.

This code is also a starting point to synchronize the development with other BSDs. Currently NetBSD is ahead and other systems can catch up.

Sponsored by <The NetBSD Foundation>

Reviewers: emaste, joerg, kettenis, labath

Reviewed By: labath

Subscribers: mgorny, #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D31138

llvm-svn: 298408
 2017-03-21 17:30:47 +00:00