similar to: [LLVMdev] Compiling a raw binary with llvm/clang

On 2009-12-17 22:08, LiteHacker wrote: > Hey, > > The following code creates a raw binary (no ELF or PE.. just raw): > > gcc -nostartfiles -c -o hello.o hello.c > ld -o hello1 hello.o --oformat binary > > You can try the following code out with it: > > void _start() > { > while(1); > } > > The resulting raw binary is 5 bytes. > It is 2.1M here

Indeed ld does link it. The reason I am using llvm-ld, is for its unique functionality. I intend to link to object files together (created by cling), and link them with llvm-ld. The main feature that I am currently interested in is the ability to have "inline functions" between two object files. This was basically impossible with gcc. Is there any way to make the raw binary with llvm?

$ clang -ffunction-sections -fdata-sections -Os -nostartfiles -c -o hello.o hello.c $ clang -ffunction-sections -fdata-sections -Os -nostartfiles -c -o test.o test.c $ llvm-ld -s -o hello2 hello.o $ llc hello2.bc -o hello3 $ ld -o hello_B hello3 --oformat binary ld:hello3: file format not recognized; treating as linker script ld:hello3:1: syntax error I am guessing that is what you meant by the

On Thu, Dec 17, 2009 at 1:00 PM, LiteHacker <vilmer88 at gmail.com> wrote: > > Indeed ld does link it. The reason I am using llvm-ld, is for its unique > functionality. > I intend to link to object files together (created by cling), and link them > with llvm-ld. > The main feature that I am currently interested in is the ability to have > "inline functions"

Make sure that -x enables tracing and -v enables verbose mode, just like other tools do. Kind of followup of commit b6b9b90dd74c7b9204bdf218aa9360e117308e78. --- builder/builder.ml | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/builder/builder.ml b/builder/builder.ml index a519913..0ddf076 100644 --- a/builder/builder.ml +++ b/builder/builder.ml @@ -555,7 +555,8 @@ let

One remaining blocking issue for linking FreeBSD with lld is the inability to build the bootloader components. We have a patch[1] in review to address one of the problems by switching to using a linker script instead of GNU ld's -N option. Another issue is that some bootloader components are created by the linker directly as binary objects, using --oformat binary. (Other bootloader components

If you call lld::coff::link twice, the second time gives this backtrace: msvcp140d.dll!00007ffc35830806() Unknown > zig.exe!std::_Debug_pointer<lld::coff::Chunk * __ptr64 const>(lld::coff::Chunk * const * _Ptr, const wchar_t * _File, unsigned int _Line) Line 926 C++ zig.exe!std::_Debug_range2<lld::coff::Chunk * __ptr64 const * __ptr64>(lld::coff::Chunk * const *

+Rui and Peter On Wed, Jul 25, 2018 at 8:34 AM, Andrew Kelley via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Here's a fix: > > --- a/lld/COFF/Driver.cpp > +++ b/lld/COFF/Driver.cpp > @@ -72,6 +72,9 @@ bool link(ArrayRef<const char *> Args, bool CanExitEarly, > raw_ostream &Diag) { > exitLld(errorCount() ? 1 : 0); > > freeArena(); > +

16396:055d98aa2dd0 almost works but not quite. LDFLAGS_DIRECT means we end up with: gld -melf_i386 -nostdlib -N -Ttext 0x100000 -o hvmloader.tmp hvmloader.o mp_tables.o util.o smbios.o 32bitbios_support.o acpi/acpi.a Specifying a linker script and asking for -nostdlib is obviously contradictory. Removing $(LDFLAGS_DIRECT) fixes the problem. regards john

Changes in xen/arch/x86/domain.c in 2.0.2 break comiple for me with: ld --oformat elf32-i386 -T x86_32/xen.lds -N \ boot/x86_32.o /home/root/xen-2.0/xen/common/common.o /home/root/xen-2.0/xen/drivers/char/driver.o /home/root/xen-2.0/xen/drivers/acpi/driver.o /home/root/xen-2.0/xen/drivers/pci/driver.o /home/root/xen-2.0/xen/arch/x86/arch.o -o /home/root/xen-2.0/xen/xen-syms

Hello, I'm enabling clang LTO to improve code size of Uefi standard (http://www.uefi.org/) firmware (https://github.com/tianocore/edk2), which is mostly C code. My project is in https://github.com/shijunjing/edk2 branch llvm : https://github.com/shijunjing/edk2/tree/llvm. I find my most firmware modules work well after enable LTO, but some X64 modules will not run (e.g. hang with CPU

Hi Rui, I still fail to enable the lld in my Uefi firmware build to replace ld, and I found it is related to the wrong symbol values in the .data section, which are pointed by R_X86_64_64 relocation entries. I need your advices. My firmware uses a linker script https://github.com/tianocore/edk2/blob/master/BaseTools/Scripts/GccBase.lds to do the linking. We use position independent code with

Hi Rui, > but why don't you use lld-link (lld for Windows target) instead of ld.lld (lld for Unix target) to create UEFI applications? I need support both PE/COFF and ELF format tools. I’m also working on the lld-link enabling (clang-cl + lld-link) in both Linux and windows. The ld.lld enabling (clang + ld.lld) is for ELF format native users. E.g.

Instead of creating Guestfs handles and manually apply common options (e.g. debug and trace), use the open_guestfs in Common_utils. This also applies the common options to handles which didn't set them before, so we can inspect also their messages if needed. --- builder/builder.ml | 8 ++------ customize/customize_main.ml | 4 +--- dib/dib.ml | 4 +---

Hi, I've tracked down what I believe is a bug in lld's relocation processing for R_X86_64_PC32 REL relocations. I'm producing the object file in a slightly unusual way: I'm using objcopy on a relocatable i386 ELF object file to convert it to x86_64 which transforms a R_386_PC32 into a R_X86_64_PC32. Steps to reproduce: 1. Assemble the attached bug.asm using nasm and note the

Hi Rui, A quick question: Does lld-link only work with clang-cl with windows-msvc option? Can lld-link work with clang with linux-gnu option? Thanks Steven Shi Intel\SSG\FID\Firmware Infrastructure From: Shi, Steven Sent: Tuesday, January 29, 2019 1:32 PM To: 'Rui Ueyama' <ruiu at google.com> Cc: llvm-dev at lists.llvm.org Subject: RE: lld write wrong symbol value in .data

Le 25/03/2019 à 14:41, Peter Smith a écrit : > Hello David, > > I don't know much about the specifics of Musl, so I'm responding generally. > > As I understand it, clang expects to find the compiler-rt libraries > relative to the resource directory, which you can find out the > location of with clang --print-resource-dir . By default it is > lib/clang/9.0.0

I am using llvm-project compiling risc-v programs. llvm-project version:dd8a2013dc1804be1b7d9cffacad2e984300bd22 Instructons to build LLVM+clang: ``` cmake -G Ninja -DCMAKE_INSTALL_PREFIX=/home/llvm/workspace/llvm/llvm-project/llvm_install -DCMAKE_BUILD_TYPE="Release" -DDEFAULT_SYSROOT="/home/llvm/workspace/riscv/riscv-tc-20200220/bin/riscv32-unknown-elf"

Hi All, Well, we compiled pre9 on an intel Mac running Tiger and now it does work on the machine. I need to see if that will now work on a PPC mac though. Hopefully it will but I am wondering if there is a way to compile and make a universal binary rsync for the Mac that will run on both, from my PPC Mac. Itried that yesterday with patch -p1 <patches/flags.diff patch -p1

Hi all, llvm-test fails on me in the first test (and many subsequent tests, but I hope that fixing the first test will allow me to continue). I see syntax errors from the C compiler and core dumps from llc. Is any of this supposed to happen? This is still on my amd64 machine. However, the build process is using the right incantation to compile (gcc-4.2 -m32 -Wl,-melf_i386). The llvm-gcc