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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright © 2019 Keith Packard
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <stdint.h>
#include <semihost.h>
#define SYS_CLOCK (0x10)
#define SYS_CLOSE (0x02)
#define SYS_ELAPSED (0x30)
#define SYS_ERRNO (0x13)
#define SYS_EXIT (0x18)
#define SYS_EXIT_EXTENDED (0x20)
#define SYS_FLEN (0x0C)
#define SYS_GET_CMDLINE (0x15)
#define SYS_HEAPINFO (0x16)
#define SYS_ISERROR (0x08)
#define SYS_ISTTY (0x09)
#define SYS_OPEN (0x01)
#define SYS_READ (0x06)
#define SYS_READC (0x07)
#define SYS_REMOVE (0x0E)
#define SYS_RENAME (0x0F)
#define SYS_SEEK (0x0A)
#define SYS_SYSTEM (0x12)
#define SYS_TICKFREQ (0x31)
#define SYS_TIME (0x11)
#define SYS_TMPNAM (0x0D)
#define SYS_WRITE (0x05)
#define SYS_WRITEC (0x03)
#define SYS_WRITE0 (0x04)
#define SHFB_MAGIC_0 0x53
#define SHFB_MAGIC_1 0x48
#define SHFB_MAGIC_2 0x46
#define SHFB_MAGIC_3 0x42
#ifdef __aarch64__
typedef unsigned long long int sh_param_t;
#else
typedef uintptr_t sh_param_t;
#endif
uintptr_t
sys_semihost(uintptr_t op, uintptr_t param);
/* Helper functions to simplify semihosting calls with indirect arguments. */
static inline uintptr_t
sys_semihost1(long op, sh_param_t arg1)
{
struct {
sh_param_t field1;
} indirect_args = {
.field1 = arg1,
};
return sys_semihost(op, (uintptr_t)&indirect_args);
}
static inline uintptr_t
sys_semihost2(long op, sh_param_t arg1, sh_param_t arg2)
{
struct {
sh_param_t field1;
sh_param_t field2;
} indirect_args = {
.field1 = arg1,
.field2 = arg2,
};
return sys_semihost(op, (uintptr_t)&indirect_args);
}
static inline uintptr_t
sys_semihost3(long op, sh_param_t arg1, sh_param_t arg2, sh_param_t arg3)
{
struct {
sh_param_t field1;
sh_param_t field2;
sh_param_t field3;
} indirect_args = {
.field1 = arg1,
.field2 = arg2,
.field3 = arg3,
};
return sys_semihost(op, (uintptr_t)&indirect_args);
}
int
_map_stdio(int fd);
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