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* sys/reg.h: derive __WORDSIZE from __LONG_MAXRich Felker12 days1-2/+0
| | | | | this removes an otherwise-unnecessary bits header from most archs, replacing it with an empty generic version.
* riscv32: add arch headersStefan O'Rear2024-02-291-0/+2
These are mostly copied from riscv64. _Addr and _Reg had to become int to match compiler-controlled parts of the ABI (result type of sizeof, etc.). There is no kernel stat struct; the userspace stat matches glibc in the sizes and offsets of all fields (including glibc's __dev_t __pad1). The jump buffer is 12 words larger to account for 12 saved double-precision floats; additionally it should be 64-bit aligned to save doubles. The syscall list was significantly revised by deleting all time32 and pre-statx syscalls, and renaming several syscalls that have different names depending on __BITS_PER_LONG, notably mmap2 and _llseek. futex was added as an alias to futex_time64 since it is widely used by software which does not pass time arguments.