1 /*
2  * Target-specific parts of semihosting/arm-compat-semi.c.
3  *
4  * Copyright (c) 2005, 2007 CodeSourcery.
5  * Copyright (c) 2019, 2022 Linaro
6  *
7  * SPDX-License-Identifier: GPL-2.0-or-later
8  */
9 
10 #ifndef TARGET_ARM_COMMON_SEMI_TARGET_H
11 #define TARGET_ARM_COMMON_SEMI_TARGET_H
12 
13 #ifndef CONFIG_USER_ONLY
14 #include "hw/arm/boot.h"
15 #endif
16 
17 static inline target_ulong common_semi_arg(CPUState *cs, int argno)
18 {
19     ARMCPU *cpu = ARM_CPU(cs);
20     CPUARMState *env = &cpu->env;
21     if (is_a64(env)) {
22         return env->xregs[argno];
23     } else {
24         return env->regs[argno];
25     }
26 }
27 
28 static inline void common_semi_set_ret(CPUState *cs, target_ulong ret)
29 {
30     ARMCPU *cpu = ARM_CPU(cs);
31     CPUARMState *env = &cpu->env;
32     if (is_a64(env)) {
33         env->xregs[0] = ret;
34     } else {
35         env->regs[0] = ret;
36     }
37 }
38 
39 static inline bool common_semi_sys_exit_extended(CPUState *cs, int nr)
40 {
41     return (nr == TARGET_SYS_EXIT_EXTENDED || is_a64(cs->env_ptr));
42 }
43 
44 static inline bool is_64bit_semihosting(CPUArchState *env)
45 {
46     return is_a64(env);
47 }
48 
49 static inline target_ulong common_semi_stack_bottom(CPUState *cs)
50 {
51     ARMCPU *cpu = ARM_CPU(cs);
52     CPUARMState *env = &cpu->env;
53     return is_a64(env) ? env->xregs[31] : env->regs[13];
54 }
55 
56 static inline bool common_semi_has_synccache(CPUArchState *env)
57 {
58     /* Ok for A64, invalid for A32/T32 */
59     return is_a64(env);
60 }
61 
62 #endif
63