The current RISC-V ISA 2.1 requires 16-byte alignment on hardware floating point implementations. Calling convention in x64 always uses the RCX, RDX, R8, R9 registers for passing the first 4 arguments (anything up to 64 bit values or pointers), while additionally to those 4 registers, RAX, R10 and R11 are considered volatile. Calling Conventions for x64 ASM - social.msdn.microsoft.com The x64 (64bit) architecture designed by AMD is based on Intel's x86 (32bit) architecture, supporting it natively. More x64 assembler fun-facts-new assembler directives - Embarcadero Blogs x64 ABI conventions | Microsoft Docs Is the Microsoft Stack always aligned to 16-bytes? A calling convention describes the interface between a caller and a function: . (So are data alignment issues, no clue what you're talking about with alignment being a bigger issue for x86-64). that will be of use due to the 2 byte alignment MBE - 05/08/2015 x64, ARM, Windows 53 . Calling conventions - osdev.wiki There are two primary versions of thiscall used depending on the compiler and whether or not the function uses a variable number of arguments.. For the GCC compiler, thiscall is almost identical to cdecl: The caller cleans the stack, and the parameters are passed in right-to . C enums have integer type-kind. Because of the different calling conventions (Microsoft x64 vs stdcall) and number of parameters for each API, the actual call to an API is made from seperate pieces of code we refer to as "dispatchers". But I'd really suggest just not defining them at all. This document summarizes the calling conventions that we expect you to use in ECE 314 for homework problems and assembly language programming projects. Either caller or callee clean-up thiscall. Also on x64 the stack must be 16 byte aligned, this means that sometimes you need to allocate even more space to preserve the alignment. Differences in various implementations include where parameters, return values, return addresses and scope links are placed (registers, stack or memory etc. Stack caller & callee, x86/x64, Windows/Linux/OSX - PureBasic Forums ... All other part of MS' ABI might, or might not be compatible to that one of gcc (and llvm?). [Bug target/54412] minimal 32-byte stack alignment with -mavx on 64-bit Windows. Notes on Type Layouts and ABIs in Rust - Faultlore Here's a sample: x64 calling conventions Two important differences between x86 and x64 are: 64-bit addressing capability Sixteen 64-bit registers for general use. In the standard RISC-V calling convention, the stack grows downward and the stack pointer is But if that's the case, they are misnamed. . winkernel/viking_winkernel_journey_knowledges.md at master · v1k1ngfr ... The stack must be kept 16-byte aligned. To understand this better, we will dissect the information in junks starting with arguments/parameters. x86 calling conventions - Infogalactic: the planetary knowledge core
