| From e51ee022b9ab670a6a3bc7f2dd3bf8b925c46b09 Mon Sep 17 00:00:00 2001 |
| From: Denton Gentry <dgentry@google.com> |
| Date: Tue, 29 Nov 2016 11:56:09 -0800 |
| Subject: [PATCH] Add ARC support. |
| |
| --- |
| src/libaio.h | 12 ++++++ |
| src/syscall-arc.h | 127 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| src/syscall.h | 2 + |
| 3 files changed, 141 insertions(+) |
| create mode 100644 src/syscall-arc.h |
| |
| diff --git a/src/libaio.h b/src/libaio.h |
| index 4fb9285..4aeb7c6 100644 |
| --- a/src/libaio.h |
| +++ b/src/libaio.h |
| @@ -111,6 +111,18 @@ typedef enum io_iocb_cmd { |
| #define PADDED(x, y) unsigned y; x |
| #define PADDEDptr(x, y) unsigned y; x |
| #define PADDEDul(x, y) unsigned y; unsigned long x; |
| +#elif defined(__arc__) |
| +# if defined(__BIG_ENDIAN__) |
| +#define PADDED(x, y) unsigned y; x |
| +#define PADDEDptr(x, y) unsigned y; x |
| +#define PADDEDul(x, y) unsigned y; unsigned long x; |
| +# elif defined(__LITTLE_ENDIAN__) |
| +#define PADDED(x, y) x; unsigned y |
| +#define PADDEDptr(x, y) x; unsigned y |
| +#define PADDEDul(x, y) unsigned long x; unsigned y |
| +# else |
| +# error "neither ARC BE nor LE?" |
| +# endif |
| #else |
| #error endian? |
| #endif |
| diff --git a/src/syscall-arc.h b/src/syscall-arc.h |
| new file mode 100644 |
| index 0000000..04befac |
| --- /dev/null |
| +++ b/src/syscall-arc.h |
| @@ -0,0 +1,127 @@ |
| +/* |
| + * This file is subject to the terms and conditions of the GNU General Public |
| + * License. See the file "COPYING" in the main directory of this archive |
| + * for more details. |
| + * |
| + * Copyright (C) 2016 Google, Inc. |
| + */ |
| + |
| +// from usr/include/bits/sysnum.h |
| +#define __NR_io_setup 0 |
| +#define __NR_io_destroy 1 |
| +#define __NR_io_getevents 4 |
| +#define __NR_io_submit 2 |
| +#define __NR_io_cancel 3 |
| + |
| +/* |
| + * syscall implementation derived from |
| + * https://sourceware.org/ml/newlib/2015/msg00731.html |
| + */ |
| + |
| +#ifdef __ARC700__ |
| +#define SYSCALL \ |
| + "trap0 \n\t" |
| +#else |
| +#define SYSCALL \ |
| + "swi \n\t"\ |
| + "nop \n\t"\ |
| + "nop \n\t" |
| +#endif /* __ARC700__ */ |
| + |
| +#define io_syscall1(type,fname,sname,atype,a) \ |
| +type fname(atype a) \ |
| +{ \ |
| + long __res; \ |
| + __asm__ __volatile__ ("mov r0, %2\n\t" \ |
| + "mov r8, %1\n\t" \ |
| + SYSCALL \ |
| + "mov %0, r0" \ |
| + : "=r" (__res) \ |
| + : "i" (SYS_##sname), \ |
| + "r" ((long)a) \ |
| + : "cc", "r0", "r8"); \ |
| + return (type)__res; \ |
| +} |
| + |
| +#define io_syscall2(type,fname,sname,atype,a,btype,b) \ |
| +type fname(atype a, btype b) \ |
| +{ \ |
| + long __res; \ |
| + __asm__ __volatile__ ("mov r1, %3\n\t" \ |
| + "mov r0, %2\n\t" \ |
| + "mov r8, %1\n\t" \ |
| + SYSCALL \ |
| + "mov %0, r0" \ |
| + : "=r" (__res) \ |
| + : "i" (SYS_##sname), \ |
| + "r" ((long)a), \ |
| + "r" ((long)b) \ |
| + : "cc", "r0", "r1", "r8"); \ |
| + return (type)__res; \ |
| +} |
| + |
| +#define io_syscall3(type,fname,sname,atype,a,btype,b,ctype,c) \ |
| +type fname(atype a, btype b, ctype c) \ |
| +{ \ |
| + long __res; \ |
| + __asm__ __volatile__ ( \ |
| + "mov r2, %4\n\t" \ |
| + "mov r1, %3\n\t" \ |
| + "mov r0, %2\n\t" \ |
| + "mov r8, %1\n\t" \ |
| + SYSCALL \ |
| + "mov %0, r0" \ |
| + : "=r" (__res) \ |
| + : "i" (SYS_##sname), \ |
| + "r" ((long)a), \ |
| + "r" ((long)b), \ |
| + "r" ((long)c) \ |
| + : "cc", "r0", "r1", "r2", "r8"); \ |
| + return (type)__res; \ |
| +} |
| + |
| +#define io_syscall4(type,fname,sname,atype,a,btype,b,ctype,c,dtype, d) \ |
| +type fname(atype a, btype b, ctype c, dtype d) \ |
| +{ \ |
| + long __res; \ |
| + __asm__ __volatile__ ( \ |
| + "mov r3, %5\n\t" \ |
| + "mov r2, %4\n\t" \ |
| + "mov r1, %3\n\t" \ |
| + "mov r0, %2\n\t" \ |
| + "mov r8, %1\n\t" \ |
| + SYSCALL \ |
| + "mov %0, r0" \ |
| + : "=r" (__res) \ |
| + : "i" (SYS_##sname), \ |
| + "r" ((long)a), \ |
| + "r" ((long)b), \ |
| + "r" ((long)c), \ |
| + "r" ((long)d) \ |
| + : "cc", "r0", "r1", "r2", "r3", "r8"); \ |
| + return (type)__res; \ |
| +} |
| + |
| +#define io_syscall5(type,fname,sname,atype,a,btype,b,ctype,c,dtype,d,etype,e) \ |
| +type fname(atype a, btype b, ctype c, dtype d, etype e) \ |
| +{ \ |
| + long __res; \ |
| + __asm__ __volatile__ ( \ |
| + "mov r4, %6\n\t" \ |
| + "mov r3, %5\n\t" \ |
| + "mov r2, %4\n\t" \ |
| + "mov r1, %3\n\t" \ |
| + "mov r0, %2\n\t" \ |
| + "mov r8, %1\n\t" \ |
| + SYSCALL \ |
| + "mov %0, r0" \ |
| + : "=r" (__res) \ |
| + : "i" (SYS_##sname), \ |
| + "r" ((long)a), \ |
| + "r" ((long)b), \ |
| + "r" ((long)c), \ |
| + "r" ((long)d), \ |
| + "r" ((long)e) \ |
| + : "cc", "r0", "r1", "r2", "r3", "r4", "r8"); \ |
| + return (type)__res; \ |
| +} |
| diff --git a/src/syscall.h b/src/syscall.h |
| index 19965a4..14de98b 100644 |
| --- a/src/syscall.h |
| +++ b/src/syscall.h |
| @@ -34,6 +34,8 @@ |
| #include "syscall-mips.h" |
| #elif defined(__avr32__) |
| #include "syscall-avr32.h" |
| +#elif defined(__arc__) |
| +#include "syscall-arc.h" |
| #else |
| #error "add syscall-arch.h" |
| #endif |
| -- |
| 2.8.0.rc3.226.g39d4020 |
| |
