search for: nakedly

Hi, I've recently been investigating problems with using naked functions in Clang where portions of the stack are overwritten in debug builds. This happens on all architectures I've tested (x86, x64, ARM) and is evident in the LLVM IR itself. With the svn builds of clang, there's an additional problem where undefined results are being introduced First to show what I'm discussing:

Hi everybody. I'm having (yet) another look at trying to get naked functions from D (1) working in our LLVM D Compiler - LDC (2). I have this test case: /// D CODE /// extern(C) int printf(char*, ...); ulong retval() { asm { naked; mov EAX, 0xff; mov EDX, 0xaa; ret; } } ulong retval2() { return (cast(ulong)0xaa << 32) | 0xff; } void main() {

Dear Community, To improve current interprocedural register allocation (IPRA) , we have planned to set callee saved registers to none for local functions, currently I am doing it in following way: if (F->hasLocalLinkage() && !F->hasAddressTaken()) { DEBUG(dbgs() << "Function has LocalLinkage \n"); F->setCallingConv(CallingConv::GHC); } but we think threre

In gcc, naked functions do not have a return instruction. It seems that in llvm they always have a return, although the prologue and epilogue is suppressed.

hmm HFSC ? where can i find more informations and examples about the *linux* HFSC ? http://trash.net/~kaber/hfsc/ does not help here -- _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Hi, I'm trying to have a pure asm function (non inlined) that returns it's own value to the caller. ; Function Attrs: naked noinline optnone define i32 @callcatch(i32, i32) #3 !dbg !10103 { BasicBlock8472: call void asm "\0D\0Apushl %ebp\0D\0Amovl 8(%esp),%eax\0D\0Amovl 12(%esp), %ebp\0D\0Acalll *%eax\0D\0Apopl %ebp\0D\0Aretl\0D\0A", ""(), !dbg !10104, !srcloc

On Mon, Jan 30, 2017 at 9:34 AM, Reid Kleckner via llvm-dev <llvm-dev at lists.llvm.org> wrote: > We need to disable most forms of IPO on naked functions. We already do this > in DeadArgElimination.cpp. We need to do it in more places. > +1. Carlo, can you please open a bug? -- Davide "There are no solved problems; there are only problems that are more or less solved"

I can now load and play AIFF, WAV, and OGG files using libsndfile and libao. Now I'm moving on to loading and playing files embedded in an IFF file. This is presenting a problem. Playing an AIFF embedded in an IFF works fine. Playing an OGG embedded in the same IFF fails. Specifically, it appears that sf_open_fd() can't figure out what it's being told to load. Except for

Thanks, Zed, for mongrel :!) I''ve been on TextDrive for some time running my sites behind apache w/lighttpd. Once it got running it was cool enough. When it ran. And there was still the webmin dance and all. So I decided to set things up on my little dedicated redhat server - since I''d had so much success locally w/mongrel. Fast. Simple. It has been great and I managed to move

hi, list, i am making a llvm compiler for shader-like programs. as we known, shader programs are short and have less function calls. i found that i have to save/restore callee-saved register(CSR) in prolog and epilog. because I can violate ABI from driver(c code) and shader, i plan to append the attribute 'noreturn' to all shader functions. in PrologEpilogInserter.cpp, you can find that

Can I create a "naked" function that has only inline assembler and no return IR for example? If I create just a function will an empty basic block, it's core dumps. I'm debugging it now.

On 2017-01-30 18:41, Davide Italiano wrote: > On Mon, Jan 30, 2017 at 9:34 AM, Reid Kleckner via llvm-dev > <llvm-dev at lists.llvm.org> wrote: >> We need to disable most forms of IPO on naked functions. We already do this >> in DeadArgElimination.cpp. We need to do it in more places. >> > > +1. Carlo, can you please open a bug? > Done

On 04/20/2013 02:04 PM, Reed Kotler wrote: > On 04/20/2013 01:30 PM, reed kotler wrote: >> Can I create a "naked" function that has only inline assembler and no >> return IR for example? >> >> If I create just a function will an empty basic block, it's core dumps. >> >> I'm debugging it now. > > Seems that you have to have at least a

Hi, What would be the proper syntax in a C file, using inline assembly, to load a immediate value into an ARM register using clang & integrated assembler? The following syntax is rejected by LLVM: // clang -target armv7em-none-eabi -mthumb #define CONSTANT 0x1234 void __attribute__((naked)) foo(void) { asm volatile ( "ldr r0, =%0 \n"

Hi, I have a factor and I would like to find the most frequent level. I think my current approach is a bit long winded and I was wondering if there was a more elegant way to do it: x <- factor(sample(1:0, 5,replace=TRUE)) levels(x)[ which( as.logical((table(x) == max(table(x)))) == TRUE ) ] (The length of x will always be an odd number, so I wont get a tie in max()) Thanks,

everyone-- The OCaml bindings need help again. diff -r a8c05e69647e import/llvm.org/llvm/bindings/ocaml/llvm/llvm.ml --- a/import/llvm.org/llvm/bindings/ocaml/llvm/llvm.ml Fri Dec 25 17:35:09 2009 -0800 +++ b/import/llvm.org/llvm/bindings/ocaml/llvm/llvm.ml Sun Dec 27 11:38:15 2009 -0800 @@ -42,13 +42,18 @@ | External | Available_externally | Link_once + | Link_once_odr | Weak +

I recently examined a bug in a program, and it turned out that the customer was using the section attribute as a form of inline-assembly mechanism, with something like: __attribute__((section("sectionName\nasm\nasm\nasm"))) this was really ugly and not at all obvious where the problem originated. Is there any way of getting LLVM or CLang to validate the name used in the section

On 04/20/2013 01:30 PM, reed kotler wrote: > Can I create a "naked" function that has only inline assembler and no > return IR for example? > > If I create just a function will an empty basic block, it's core dumps. > > I'm debugging it now. Seems that you have to have at least a return instruction. Is that a bug? Why can't I do the return myself if

Is it somehow possible to configure a bridge in 'hub' mode. So that every packet sent from a 'port' (eg. an interface) is delivered to every other 'port' on the bridge. That is, effectively to just turn off MAC address learning and treat all packets on the bridge level effectively as broadcasts. Or could this be done with some ebtables hack? Suggestions appreciated, --

On 2/3/2017 3:35 AM, Steve Clark wrote: > > What kind of cable modem/gateway do you have? Just wondering because > my 12 year old Toshiba finally > crapped out and Spectrum gave me a new one. Its and ARRIS TG1682G and > it only gives me a private IP not > like the old one which gave me the public IP so I can't ssh to home > from work anymore, so I am wondering > how