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libucontext
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riscv64: port to C trampoline

pull/23/head
Ariadne Conill 2020-12-12 07:07:32 +00:00
parent 11a40293be
commit d81154a61c
4 changed files with 6 additions and 27 deletions
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2
README.md
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@ -25,7 +25,7 @@ target to do it.
| mips64 | ✓ | | ✓ | |
| ppc | ✓ | ✓ | | |
| ppc64 | ✓ | ✓ | | |
| riscv64 | ✓ | | ✓ | |
| riscv64 | ✓ | | ✓ | ✓ |
| s390x | ✓ | | ✓ | |
| sh | ✓ | | ✓ | ✓ |
| x86 | ✓ | | ✓ | ✓ |

3
arch/riscv64/defs.h
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@ -47,6 +47,9 @@
#define PC_OFFSET REG_OFFSET(REG_PC)
#define FETCH_LINKPTR(dest) \
asm("mv %0, s1" : "=rm" ((dest)))
#include "common-defs.h"
#endif

26
arch/riscv64/startcontext.S
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@ -1,26 +0,0 @@
/*
* Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* This software is provided 'as is' and without any warranty, express or
* implied. In no event shall the authors be liable for any damages arising
* from the use of this software.
*/
#include "defs.h"
FUNC(libucontext_trampoline)
/* check for linked context */
beqz s1, no_linked_context
/* if one is set, invoke it */
mv a0, s1
jal libucontext_setcontext
/* otherwise, exit. */
no_linked_context:
tail exit@plt
END(libucontext_trampoline)

2
arch/riscv64/trampoline.c Normal file
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@ -0,0 +1,2 @@
#include "defs.h"
#include "common-trampoline.c"