search for: n_type

Hello, I'm finally getting back to getting JIT debugging work for MCJIT. This has worked for ELF for a while in LLVM and support in lldb was added in January (for ELF). I'm now trying to add support for Mach-O and would appreciate some feedback (though I'm fighting my way through learning the format, I'm still just a novice). My current patchset for llvm is here:

...Mach-O could look at the above patch and give some feedback. If this > approach looks sane in general, I'll finish up and post both the LLVM and > the LLDB patch for formal review. > > The one thing you might want to look into is the n_value only needs to be > updated "if ((N_TYPE & n_type) == N_SECT)" (the symbol is in a section and > therefore is has a address value). Other symbols have values that usually > don't need to be modified. You might also need to watch out for absolute > symbols (if ((N_TYPE & n_type) == N_ABS)) as there are a few that...

...xperience with Mach-O could look at the above patch and give some feedback. If this approach looks sane in general, I'll finish up and post both the LLVM and the LLDB patch for formal review. > > The one thing you might want to look into is the n_value only needs to be updated "if ((N_TYPE & n_type) == N_SECT)" (the symbol is in a section and therefore is has a address value). Other symbols have values that usually don't need to be modified. You might also need to watch out for absolute symbols (if ((N_TYPE & n_type) == N_ABS)) as there are a few that sometimes don...

...utput to be converted to a dataframe with one of the columns as the grouping variable. This seems simple but my attempts with do.call("cbind") and rbind have not worked so I have concluded I a missing something obvious. Any help is appreciated. Thanks, Mike areas <- structure (list(N_Type = structure(c(4, 1, 4, 1, 1, 4, 1, 4, 4, 1, 4, 1, 4, 1, 4, 1, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 4, 1, 4, 1, 2, 1, 2, 1, 4, 1, 4, 1, 4, 1, 4, 1, 1, 4, 1, 4, 1, 4, 1, 4, 4, 1, 4, 1, 2, 1, 2, 1, 1, 4, 1, 4, 4, 1, 4, 1, 4,...

...{ pageshift++; pagesize >>= 1; } kvm_data = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open"); if (kvm_data == NULL) { fprintf(stderr, "can't open kernel virtual memory"); exit(1); } kvm_nlist(kvm_data, nlst); if (nlst[0].n_type == 0 || nlst[1].n_type == 0) { fprintf(stderr, "error extracting symbols"); exit(1); }

...tf("%s: unknown data size %#x\n", prefix, + (unsigned int)note->n_descsz); break; } } @@ -301,7 +302,8 @@ int main(int argc, char **argv) print_string_note("FEATURES", note); break; default: - printf("unknown note type %#x\n", note->n_type); + printf("unknown note type %#x\n", + (unsigned int)note->n_type); break; } } diff --git a/tools/xenstat/xentop/Makefile b/tools/xenstat/xentop/Makefile --- a/tools/xenstat/xentop/Makefile +++ b/tools/xenstat/xentop/Makefile @@ -25,7 +25,7 @@ sbindir=$(prefix...

...AK and accesses it. Signed-off-by: maximilian attems <max at stro.at> diff --git a/usr/include/sys/elf32.h b/usr/include/sys/elf32.h index e4df8ce..6da2ddb 100644 --- a/usr/include/sys/elf32.h +++ b/usr/include/sys/elf32.h @@ -110,4 +110,8 @@ typedef struct elf32_note { Elf32_Word n_type; /* Content type */ } Elf32_Nhdr; +/* How to extract and insert information held in the st_info field. */ +#define ELF32_ST_BIND(val) (((unsigned char) (val)) >> 4) +#define ELF32_ST_TYPE(val) ((val) & 0xf) + #endif /* _SYS_ELF32_H */ diff --git a/usr/include/sys/elf64.h b/usr/i...

...ke there should be a way to work around that. Perhaps there's something > we can change in ld64. > As far as I can tell, the "auto hide" property is independent of whether the symbol is actually hidden (the former is N_WEAK_DEF|N_WEAK_REF in n_desc, and the latter is N_PEXT in n_type). So perhaps what you can do is change ld64 to recognize N_WEAK_DEF|N_WEAK_REF together with N_PEXT as meaning "hidden and mergeable". Peter > > > Steven > > > >> On Feb 9, 2018, at 2:00 PM, Steven Wu via llvm-dev < > llvm-dev at lists.llvm.org> wrote: &...

...AK and accesses it. Signed-off-by: maximilian attems <max at stro.at> diff --git a/usr/include/sys/elf32.h b/usr/include/sys/elf32.h index e4df8ce..6da2ddb 100644 --- a/usr/include/sys/elf32.h +++ b/usr/include/sys/elf32.h @@ -110,4 +110,8 @@ typedef struct elf32_note { Elf32_Word n_type; /* Content type */ } Elf32_Nhdr; +/* How to extract and insert information held in the st_info field. */ +#define ELF32_ST_BIND(val) (((unsigned char) (val)) >> 4) +#define ELF32_ST_TYPE(val) ((val) & 0xf) + #endif /* _SYS_ELF32_H */ diff --git a/usr/include/sys/elf64.h b/usr/i...

...re on some machine running 4.7. It's so weird so I'd very unlikely notice it at all, but thanks to top(1): when launched, instead of displaying some useful figures it exits with an error: "top: nlist failed". >From quick look it appears that kvm_nlist() returns NULL for nlst[0].n_type. Strange, ignoring; next exit point is: "top: kvm_read for _ccpu: Bad address" Something bad happens: kernel virtual memory symbol table becomes unreadable, so kvm calls fail... But system runs all right, has completed buildworld today... Source of the problem is objcopy(1), i.e. wiping...

> On Feb 14, 2018, at 09:55, Steven Wu via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > I did a bit more digging for the auto hide problem. Here is my finding that prevent us from doing this by default in GlobalOpts > > 1. When a symbol is linkonce_odr hidden unnamed_addr, it emits both '.private_extern' and '.weak_def_can_be_hidden' asm directives on

Hi, I've come across some problems with the assembly version of the ELFNOTE macro currently in -mm. (in x86-put-note-sections-into-a-pt_note-segment-in-vmlinux.patch) The first is that older gas does not support :varargs in .macro definitions (in my testing 2.17 does while 2.15 does not, I don't know when it became supported). The Changes file says binutils >= 2.12 so I think we need

...mode 100644 index 0000000..92c98d7 --- /dev/null +++ b/test/image/replace.c @@ -0,0 +1,116 @@ +/* gcc `pkg-config --libs --cflags libming glib-2.0` replace.c -o replace && ./replace + */ + +#include <ming.h> +#include <glib.h> + +typedef enum { + SHAPE, + MOVIE, + BUTTON, + N_TYPES +} Type; + +char *types[] = { + "shape", + "movie", + "button", +}; + +static SWFDisplayItem +add_rectangle (SWFMovie movie, Type type, int r, int g, int b) +{ + SWFShape shape; + SWFFillStyle fill; + SWFDisplayItem item; + + shape = newSWFShape (); + fill = S...

When I make a simple test program and call abort() and use LLDB to debug it, it has address-to-line mapping. If I then delete the .o file and run LLDB again, it loses the address-to-line mapping. So there must be DWARF info, or otherwise address-to-line info in the .o file. I'm parsing the MACH-O executable, which has a LC_SYMTAB entry, and one of the entries is the file path of the .o file.

....family = pfkey_sadb_addr2xfrm_addr(addr, &x->sel.saddr); x->sel.prefixlen_s = addr->sadb_address_prefixlen; - } + } else + x->sel.family = x->props.family; /* Conservative */ if (ext_hdrs[SADB_X_EXT_NAT_T_TYPE-1]) { struct sadb_x_nat_t_type* n_type; @@ -1763,14 +1764,13 @@ if (!t->reqid && !(t->reqid = gen_reqid())) return -ENOBUFS; } - - /* addresses present only in tunnel mode */ - if (t->mode) { - switch (xp->family) { +/* addresses present in any mode */ + { + struct so...

I've updated the patches at http://ozlabs.org/~rusty/paravirt/?mf=33ba6c4fce13;path=/ to carve out the basic shape of how I see all this fitting together. These patches implement an initial set of Xen paravirt ops, as well as adapting head.S to set up a Xen-specific entrypoint. The head.S code does absolutely minimal setup, and then calls xen_start_kernel(). This installs the Xen