diff options
author | Stefan O'Rear <sorear@fastmail.com> | 2020-09-03 05:40:29 -0400 |
---|---|---|
committer | Rich Felker <dalias@aerifal.cx> | 2024-02-29 16:35:30 -0500 |
commit | 01d9fe4d9f7cce7a6dbaece0e2e405a2e3279244 (patch) | |
tree | bed13ff84c58d124a99b0799841812b29b3eeba1 /arch/riscv32/crt_arch.h | |
parent | 5c653ccaa1383db0c310abf66d5b6806e83ac18f (diff) | |
download | musl-01d9fe4d9f7cce7a6dbaece0e2e405a2e3279244.tar.gz musl-01d9fe4d9f7cce7a6dbaece0e2e405a2e3279244.tar.xz musl-01d9fe4d9f7cce7a6dbaece0e2e405a2e3279244.zip |
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.
Diffstat (limited to 'arch/riscv32/crt_arch.h')
-rw-r--r-- | arch/riscv32/crt_arch.h | 19 |
1 files changed, 19 insertions, 0 deletions
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" +); |