abi

Im very new to assembly but know a bit of c. Im playing around with extern function calls like extern _printf str db "Hello", 0 push str call _printf but cant find any tutorials using extern functions except scanf and printf. For example strcmp? How can i call strcmp in my case? Micrified Here is my answer. It is specific to x86-64 though. Please know that when pushing arguments to a function, you usually place the first 6 in registers rdi , rsi , rdx , rcx , r8 , and r9 . The rest get pushed to the stack. The specification for this is called the System V ABI (Note that Windows uses a

I have an application that is deployed on a centos 6.7 plateform and built with the native C++ compiler of the distribution, that is gcc 4.4.7. Now for some reasons ( actually, upgrade to Qt 5.7 ), i need to use a modern compiler with C++11 features fully supported, let's say gcc 4.8.2 from devtoolset-2. Another possibility was to built a new version of gcc from the sources. According to https://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html the 4.8.3 (but 4.8.2 is not mentionned ) version of gcc is backward compatible with the libstdc++.6.0.13 ( default c++ lib in centos 6.7 ). I have

UPDATE: tried lowering "v7a" ABI versionCode to prefix 4 (lower than 5 which is "v8") without any luck Currently my app is in Alpha stage. Every APK was generated by the same ABI split and the same version multiplication for each ABI (code included), to both "armeabi-v7a", and to "arm64-v8a". Even though I have uploaded only "v8a" APK until now. Now when I'm trying to upload the "v7a" I'm getting the following error from google play console: Problem: This APK will not be served to any users because it is completely shadowed by one or more APKs with higher version codes. Resolution: Remove this

This SO post: Is Visual-C++-2017 binary compatible with VC++-2015? clearly says that VS 2017 is binary compatible with VS 2015. It even looks like the official position. My question is, in the past, I distinctly remember running into linker errors (I do not recall the specific set of errors) every time I try to link in a static library that was compiled with a different version of MSVC into an EXE that is being built with a newer version of MSVC. Yet, binary (in)compatibility sounds like something that will blow up in your face at runtime , not link time. Can someone tell me if previous

All the standard shared libraries on my Linux system (Fedora 9) specify ELFOSABI_NONE (0) as their OSABI. This is fine - however I've received a shared library from a supplier where the OSABI given in the ELF header is ELFOSABI_LINUX (3). This doesn't sound like an unreasonable value for a shared library intended for a Linux system, however it is a different value to that of all my other libraries - and so when I try to open this library, with dlopen(), from one of my other libraries this fails with the error "ELF file OS ABI invalid". I compiled up the FreeBSD utility brandelf.c and used it

本文基于 Android 9.0 , 代码仓库地址 ： android_9.0.0_r45 文中源码链接： SystemServer.java ActivityManagerService.java Process.java ZygoteProcess.java 对 Zygote 和 SystemServer 启动流程还不熟悉的建议阅读下面两篇文章： Java 世界的盘古和女娲 —— Zygote Zygote 家的大儿子 —— SystemServer Zygote 作为 Android 世界的受精卵，在成功繁殖出 system_server 进程之后并没有完全功成身退，仍然承担着受精卵的责任。 Zygote 通过调用其持有的 ZygoteServer 对象的 runSelectLoop() 方法开始等待客户端的呼唤，有求必应。客户端的请求无非是创建应用进程，以 startActivity() 为例，假如开启的是一个尚未创建进程的应用，那么就会向 Zygote 请求创建进程。下面将从 客户端发送请求 和 服务端处理请求 两方面来进行解析。 客户端发送请求 startActivity() 的具体流程这里就不分析了，系列后续文章会写到。我们直接看到创建进程的 startProcess() 方法，该方法在 ActivityManagerService 中，后面简称 AMS 。

Ulrich Drepper's paper on thread-local storage outlines the TLS ABI for several different cpu architectures, but I'm finding it insufficient as a basis for implementing TLS for two reasons: It omits a number of important archs like ARM, MIPS, etc. (while including a bunch of completely-irrelevant ones like Itanium) More importantly, it mixes a lot of implementation details with ABI, so that it's hard to tell which properties are required for interoperability, and which are just aspects of his implementation. As an example, the only actual ABI requirements for i386 are: %gs:0 points to a

I've been told: [ABIs] guarantee the exact layout of the struct, byte offset of every member, which bits are used for bit fields, where and how much padding there is, etc... But I've always believed that padding and alignment were unspecified and unreliable. Does the Itanium ABI (which GCC uses) in fact specify these things (as far as I can tell, it doesn't appear to beyond specifying ranges)? And if it does, how do options like __attribute__ ((packed)) fit into that? Do they ultimately break the ABI by altering the alignment of things? Or, as the quotee implies, is packing merely unspecified