/* Copyright (c) 2010 Andrea Bastoni, <bastoni@cs.unc.edu>
* Copyright (c) 2012 Björn Brandenburg, <bbb@mpi-sws.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/* Do not directly include this file. Include feather_trace.h instead */
/* regparm is the default on x86_64 */
#define feather_callback __attribute__((used))
#define __FT_EVENT_TABLE(id,from,to) \
".section __event_table, \"aw\"\n\t" \
".balign 8\n\t" \
".quad " #id ", 0, " #from ", " #to " \n\t" \
".previous \n\t"
/*
* x86_64 caller only owns rbp, rbx, r12-r15;
* the callee can freely modify the others.
*/
#define __FT_CLOBBER_LIST0 "memory", "cc", "rdi", "rsi", "rdx", "rcx", \
"r8", "r9", "r10", "r11", "rax"
#define __FT_CLOBBER_LIST1 "memory", "cc", "rdi", "rdx", "rcx", \
"r8", "r9", "r10", "r11", "rax"
#define __FT_CLOBBER_LIST2 "memory", "cc", "rdi", "rcx", \
"r8", "r9", "r10", "r11", "rax"
#define __FT_CLOBBER_LIST3 "memory", "cc", "rdi", \
"r8", "r9", "r10", "r11", "rax"
/* The registers RDI, RSI, RDX, RCX, R8 and R9 are used for integer and pointer
* arguments. */
/* RSI */
#define __FT_TMP1(x) "=S" (x)
#define __FT_ARG1(x) "0" ((long) (x))
/* RDX */
#define __FT_TMP2(x) "=d" (x)
#define __FT_ARG2(x) "1" ((long) (x))
/* RCX */
#define __FT_TMP3(x) "=c" (x)
#define __FT_ARG3(x) "2" ((long) (x))
#define ft_event(id, callback) \
__asm__ __volatile__( \
"1: jmp 2f \n\t" \
" call " #callback " \n\t" \
__FT_EVENT_TABLE(id,1b,2f) \
"2: \n\t" \
: : : __FT_CLOBBER_LIST0)
#define ft_event0(id, callback) \
__asm__ __volatile__( \
"1: jmp 2f \n\t" \
" movq $" #id ", %%rdi \n\t" \
" call " #callback " \n\t" \
__FT_EVENT_TABLE(id,1b,2f) \
"2: \n\t" \
: : : __FT_CLOBBER_LIST0)
#define ft_event1(id, callback, param) \
do { \
long __ft_tmp1; \
__asm__ __volatile__( \
"1: jmp 2f \n\t" \
" movq $" #id ", %%rdi \n\t" \
" call " #callback " \n\t" \
__FT_EVENT_TABLE(id,1b,2f) \
"2: \n\t" \
: __FT_TMP1(__ft_tmp1) \
: __FT_ARG1(param) \
: __FT_CLOBBER_LIST1); \
} while (0);
#define ft_event2(id, callback, param, param2) \
do { \
long __ft_tmp1, __ft_tmp2; \
__asm__ __volatile__( \
"1: jmp 2f \n\t" \
" movq $" #id ", %%rdi \n\t" \
" call " #callback " \n\t" \
__FT_EVENT_TABLE(id,1b,2f) \
"2: \n\t" \
: __FT_TMP1(__ft_tmp1), __FT_TMP2(__ft_tmp2) \
: __FT_ARG1(param), __FT_ARG2(param2) \
: __FT_CLOBBER_LIST2); \
} while (0);
#define ft_event3(id, callback, param, param2, param3) \
do { \
long __ft_tmp1, __ft_tmp2, __ft_tmp3; \
__asm__ __volatile__( \
"1: jmp 2f \n\t" \
" movq $" #id ", %%rdi \n\t" \
" call " #callback " \n\t" \
__FT_EVENT_TABLE(id,1b,2f) \
"2: \n\t" \
: __FT_TMP1(__ft_tmp1), __FT_TMP2(__ft_tmp2), __FT_TMP3(__ft_tmp3) \
: __FT_ARG1(param), __FT_ARG2(param2), __FT_ARG3(param3) \
: __FT_CLOBBER_LIST3); \
} while (0);
