1/* 2 * Copyright 2017, Data61 3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO) 4 * ABN 41 687 119 230. 5 * 6 * This software may be distributed and modified according to the terms of 7 * the BSD 2-Clause license. Note that NO WARRANTY is provided. 8 * See "LICENSE_BSD2.txt" for details. 9 * 10 * @TAG(DATA61_BSD) 11 */ 12 13#ifndef __LIBSEL4_SEL4_SEL4_ARCH_FUNCTIONS_H_ 14#define __LIBSEL4_SEL4_SEL4_ARCH_FUNCTIONS_H_ 15 16#include <sel4/types.h> 17 18/* the segment loaded into GS points directly to the IPC buffer */ 19#define SEL4_GET_IPCBUF_SCALE(field, i, res) \ 20 do {\ 21 asm volatile ("movq %%gs:%c2(,%1,%c3), %0"\ 22 : [result] "=r" (res) /* outputs */\ 23 : [scale] "r" (i), /* inputs */\ 24 [offset] "i" (SEL4_OFFSETOF(seL4_IPCBuffer, field)),\ 25 [scale_factor] "i" (sizeof(seL4_Word))\ 26 /* no clobber */);\ 27 } while(0) 28 29 30#define SEL4_SET_IPCBUF_SCALE(field, i, val) \ 31 do {\ 32 asm volatile ("movq %0, %%gs:%c2(,%1,%c3)"\ 33 : /* no outputs */\ 34 : [value] "r" (val), /* inputs */\ 35 [scale] "r" (i),\ 36 [offset] "i" (SEL4_OFFSETOF(seL4_IPCBuffer, field)),\ 37 [scale_factor] "i" (sizeof(seL4_Word))\ 38 : "memory"); /* clobber */\ 39 } while(0) 40 41#define SEL4_GET_IPCBUF(field, res) \ 42 do {\ 43 asm volatile ("movq %%gs:%c1, %0"\ 44 : [result] "=r" (res) /* inputs */\ 45 : [offset] "i" (SEL4_OFFSETOF(seL4_IPCBuffer, field)) /* outputs */\ 46 /* no clobber */);\ 47 } while(0) 48 49 50#define SEL4_SET_IPCBUF(field, val) \ 51 do {\ 52 asm volatile ("movq %0, %%gs:%c1"\ 53 : /* no outputs */\ 54 : [value] "r" (val), /* inputs */\ 55 [offset] "i" (SEL4_OFFSETOF(seL4_IPCBuffer, field))\ 56 : "memory"); /* clobber */\ 57 } while(0) 58 59#endif /* __LIBSEL4_SEL4_SEL4_ARCH_FUNCTIONS_H_ */ 60