How to make section physical address to zero in GCC elf file?
Currently I am working on PowerPC target with GCC and Greenhills compiler, I found the Greenhills compiler can always generate sections with all zero pyhsical address of sections in elf, Here is sample...
View Articlewrong version off gcc in my sytem for a python build
I am trying to install a software package in my linux environment in a local directory . The package requires gcc version 4.9 or later and python 3.5 or later as . I have python 3.7 on my environment,...
View ArticleWhat versions of GCC is supported by RHEL7.2?
I'm looking to install a newer versions of GCC in my RHEL7.2 environment. The default GCC version is 4.8.5, but I need at least 5.1 or newer. I'm wondering if there's a only up to a certain version...
View ArticleWhy does each member function get its own .text.* section?
I understand that name mangling happens. What I don't understand is this:class MyClass{public: int doStuff(int a){ return a+1; }};int main(){ MyClass myclass; myclass.doStuff(2); return 0;}> g++ -c...
View Articlesimple linker.ld file broke the executable MinGW
I have tried a simple linker script in MinGW using the following commands gcc -Wall -c boot.cld boot.o -o boot.exe -T linker.ldboot.c containsint my_main(void){ return 0x1000;}linker.ld...
View ArticleWhy sum of symbol size much less than ".text" section size?
I'm debugging a dynamic shared library in linux, the name of the library is libMNN.so.Here is the size of all sections of libMNN.so got by size -A ./libMNN.so :section size addr.note.gnu.build-id 36...
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Problem with method call, especially calling Assembly From C
I'm trying to write a small OS, but am having a problem when I call my assembly function from C.[BITS 16]extern initcall initmov SI, msgcall printstrcall printstrjmp $global printstrprintstr: mov AL,...
View ArticleDoes specifying "-nostdlib" in GCC defines some preprocessor macro?
In GCC, if we were to specify -ffreestanding, GCC will define __STDC_HOSTED__ to 0. Is there a similar macro defined/undefined for specifying -nostdlib in GCC/Clang?
View Articlewhat does extra symbol and assembly code mean?
I have a simple c file:// filename: test.cvoid fun() {}Then I compile test.c to libtest.so using commands:gcc -shared -fPIC -Wl,--gc-sections -ffunction-sections -fdata-sections -o libtest.so...
View ArticleUsing openmp on windows with mingw. Cannot find -lpthread
I have a CMake project which is using OpenMP and works on linux. When I went to compile it on my windows machine it looked like CMake was having trouble finding the openmp flags for mingw's gcc. I...
View ArticleI wonder if my code can be more optimized
I'm student and taking Microprocessor class.Because of COVID-19, I had gotten a simple mid-term assignment writing inline assembly code of QuickSort.Today, I got a score of this assignment and the...
View ArticleCan gcc's linker fold multiple instantiations of a static function in a C...
The embedded C code I'm writing has numerous (i.e. >100) small static accessor functions defined in headers, but I'd be uncomfortable moving them out of the headers because the overall code clarity...
View ArticleDevtoolset 3 with GCC 4.9.2 causing segmentation faults
I have a CentOS 6.10 with GCC 4.4.7 and Devtoolset 3, which has GCC 4.9.2. Basically, I have this C++ project that runs perfectly fine when built using GCC 4.4.7 but results to a segmentation fault...
View ArticleIs Google's Golang an interpreter or compiler?
I have been researching Golang and I see that it has a compiler.But is it compiling Go into assembly level code or just converting it into BYTECODES and then calling that compilation? I mean, even in...
View ArticleCannot modify data segment register. When tried General Protection Error is...
I have been trying to create an ISR handler following this tutorial by James Molloy but I got stuck. Whenever I throw a software interrupt, general purpose registers and the data segment register is...
View Articleusing gcc and getting core dumped [duplicate]
hi i was trying to use this function to take out palindromes and make a new string with them but i get core dumpedi don't see any problem with code really it is complicated because i use so many...
View Articleinternal error in mingw32_gt_pch_use_address, at...
internal error in mingw32_gt_pch_use_address, at config/i386/host-mingw32.c:190: MapViewOfFileEx: Attempt to access invalid address. I get this error while compiling a c++ program in sublime-text 3.How...
View ArticleUbuntu 14.04 install gcc-4.5 and g++4.5
I'm trying to install gcc-4.5 and g++-4.5 on Ubuntu 14.04 sudo apt-get install gcc-4.5 g++-4.5 gcc-multilib g++-multilib but the following errors appeared:Package gcc-4.5 is not available, but is...
View Articlegcc/g++ using linkerflag "-lSDL2"
acordingly to lazyfoos sdl tutorial https://lazyfoo.net/tutorials/SDL/01_hello_SDL/linux/cli/index.phpi setup sdl2. (and it runs with the given Terminal command) "g++ 01_hello_SDL.cpp -w -lSDL2 -o...
View ArticleWhy does this work with G++ and not CLANG? [closed]
Trying to learn C/C++.Why does this work when use g++ and not clang? But it works when I convert the same program to plain C and use gcc and clang...The code:#include <iostream>#ifndef...
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