diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2020-07-26 19:36:28 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2020-07-26 19:36:28 +0000 |
| commit | cfca06d7963fa0909f90483b42a6d7d194d01e08 (patch) | |
| tree | 209fb2a2d68f8f277793fc8df46c753d31bc853b /compiler-rt/lib/builtins/ve/grow_stack.S | |
| parent | 706b4fc47bbc608932d3b491ae19a3b9cde9497b (diff) | |
Notes
Diffstat (limited to 'compiler-rt/lib/builtins/ve/grow_stack.S')
| -rw-r--r-- | compiler-rt/lib/builtins/ve/grow_stack.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/compiler-rt/lib/builtins/ve/grow_stack.S b/compiler-rt/lib/builtins/ve/grow_stack.S new file mode 100644 index 000000000000..f403798495af --- /dev/null +++ b/compiler-rt/lib/builtins/ve/grow_stack.S @@ -0,0 +1,31 @@ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception + +#include "../assembly.h" + +// grow_stack routine +// This routine is VE specific +// https://www.nec.com/en/global/prod/hpc/aurora/document/VE-ABI_v1.1.pdf + +// destroy %s62 and %s63 only + +#ifdef __ve__ + +.text +.p2align 4 +DEFINE_COMPILERRT_FUNCTION(__ve_grow_stack) + subu.l %sp, %sp, %s0 # sp -= alloca size + and %sp, -16, %sp # align sp + brge.l.t %sp, %sl, 1f + ld %s63, 0x18(,%tp) # load param area + lea %s62, 0x13b # syscall # of grow + shm.l %s62, 0x0(%s63) # stored at addr:0 + shm.l %sl, 0x8(%s63) # old limit at addr:8 + shm.l %sp, 0x10(%s63) # new limit at addr:16 + monc +1: + b.l (,%lr) +END_COMPILERRT_FUNCTION(__ve_grow_stack) + +#endif // __ve__ |