RV64ILP32Q:使用ABI_FLEN=128硬件浮点调用约定的RV64ILP32。 RV64ILP32* ABIs都是实验性的,这些ABI的目的是解决32位软件在64位硬件上运行不能充分利用64位寄存器的问题。 参考资料 RISC-V ABIs Specification(Version 1.1, March 25, 2025: Pre-release) Releases · riscv-non-isa/riscv-elf-psabi-doc...
on RV64G: LP64 with floats and doubles passed in floating point registers, i.e. ELFCLASS64 and EF_RISCV_FLOAT_ABI_DOUBLE, using the following C type sizes: Although RV64GQ systems can technically use EF_RISCV_FLOAT_ABI_QUAD, it is strongly recommended to use EF_RISCV_FLOAT_ABI_DOUB...
Risc-V ABI specificationshttps://riscv.org/technical/specifications riscv abi官方文档https://github.com/riscv-non-isa/riscv-elf-psabi-doc 数据模型(LP32 ILP32 LP64 LLP64 ILP64 )https://www.cnblogs.com/lsgxeva/p/7614856.html ILP32 and LP64 data models and data type sizeshttps://www....
引入“C”扩展的情况下,“C”扩展包含的堆栈相关Load/Store指令明确使用x2作为堆栈指针,这就不仅仅是一种约定了,而是强制规定了。 堆栈是向下生长,并且要求128位(即16字节)对齐,这在 RISC-V ELF psABI specification 约定: The stack grows downwards and the stack pointer shall be aligned to...
This PR adds a new file, detailing a new RISC-V Embedded PIC (ePIC) ABI specification. It is thus a proposal for that ABI, to be discussed here, improved, and, hopefully, eventually accepted. What is ePIC Basically, the aim of the ePIC ABI is to allow the creation of position-indepen...
RISC-V ELF psABI specification. 2021. https://github.com/riscv-non-isa/riscv- elf-psabi-doc/releases [21] Syntacore. SCR1 external architecture specification. 2021. https://github.com/syntacore/scr1/blob/master/docs/scr1_eas.pdf [22] IEEE Standard for Floating-Point Arithmetic. In: ...
(图片来自 RISC-V Supervisor Binary Interface Specification Version 0.3-rc0 p6) RISC-V使用哪个寄存器保存第一个参数呢?根据RISC-V ELF psABI specification的整数寄存器调用约定( 参考链接6 ),我们可以看到寄存器a0用于传递第一个参数。发送一个字符的对应的代码是这个样子 ...
Removal of the calling convention chapter, which has been superseded by the RISC-V ELF psABI Specification cite:[riscv-elf-psabi]. The C extension has been frozen and renumbered version 2.0.Preface to Document Version 2.1 This is version 2.1 of the document describing the RISC-V user...
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编译riscv gcc 下载完毕后,就要开始编译。首先在riscv-gnu-toolchain根目录下,创建build目录。用于编译riscv gcc。 riscv gcc可以编译成以下几个版本 riscv32-unknown-elf-gcc riscv64-unknown-elf-gcc riscv32-unknown-linux-gnu-gcc riscv64-unknown-linux-gnu-gcc ...