From 01d9fe4d9f7cce7a6dbaece0e2e405a2e3279244 Mon Sep 17 00:00:00 2001 From: Stefan O'Rear Date: Thu, 3 Sep 2020 05:40:29 -0400 Subject: riscv32: add arch headers 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. --- arch/riscv32/crt_arch.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 arch/riscv32/crt_arch.h (limited to 'arch/riscv32/crt_arch.h') diff --git a/arch/riscv32/crt_arch.h b/arch/riscv32/crt_arch.h new file mode 100644 index 00000000..6b93fcfd --- /dev/null +++ b/arch/riscv32/crt_arch.h @@ -0,0 +1,19 @@ +__asm__( +".section .sdata,\"aw\"\n" +".text\n" +".global " START "\n" +".type " START ",%function\n" +START ":\n" +".weak __global_pointer$\n" +".hidden __global_pointer$\n" +".option push\n" +".option norelax\n\t" +"lla gp, __global_pointer$\n" +".option pop\n\t" +"mv a0, sp\n" +".weak _DYNAMIC\n" +".hidden _DYNAMIC\n\t" +"lla a1, _DYNAMIC\n\t" +"andi sp, sp, -16\n\t" +"tail " START "_c" +); -- cgit 1.4.1