miraland_bpf_loader_program/syscalls/
sysvar.rs

1use super::*;
2
3fn get_sysvar<T: std::fmt::Debug + Sysvar + SysvarId + Clone>(
4    sysvar: Result<Arc<T>, InstructionError>,
5    var_addr: u64,
6    check_aligned: bool,
7    memory_mapping: &mut MemoryMapping,
8    invoke_context: &mut InvokeContext,
9) -> Result<u64, Error> {
10    consume_compute_meter(
11        invoke_context,
12        invoke_context
13            .get_compute_budget()
14            .sysvar_base_cost
15            .saturating_add(size_of::<T>() as u64),
16    )?;
17    let var = translate_type_mut::<T>(memory_mapping, var_addr, check_aligned)?;
18
19    let sysvar: Arc<T> = sysvar?;
20    *var = T::clone(sysvar.as_ref());
21
22    Ok(SUCCESS)
23}
24
25declare_builtin_function!(
26    /// Get a Clock sysvar
27    SyscallGetClockSysvar,
28    fn rust(
29        invoke_context: &mut InvokeContext,
30        var_addr: u64,
31        _arg2: u64,
32        _arg3: u64,
33        _arg4: u64,
34        _arg5: u64,
35        memory_mapping: &mut MemoryMapping,
36    ) -> Result<u64, Error> {
37        get_sysvar(
38            invoke_context.get_sysvar_cache().get_clock(),
39            var_addr,
40            invoke_context.get_check_aligned(),
41            memory_mapping,
42            invoke_context,
43        )
44    }
45);
46
47declare_builtin_function!(
48    /// Get a EpochSchedule sysvar
49    SyscallGetEpochScheduleSysvar,
50    fn rust(
51        invoke_context: &mut InvokeContext,
52        var_addr: u64,
53        _arg2: u64,
54        _arg3: u64,
55        _arg4: u64,
56        _arg5: u64,
57        memory_mapping: &mut MemoryMapping,
58    ) -> Result<u64, Error> {
59        get_sysvar(
60            invoke_context.get_sysvar_cache().get_epoch_schedule(),
61            var_addr,
62            invoke_context.get_check_aligned(),
63            memory_mapping,
64            invoke_context,
65        )
66    }
67);
68
69declare_builtin_function!(
70    /// Get a EpochRewards sysvar
71    SyscallGetEpochRewardsSysvar,
72    fn rust(
73        invoke_context: &mut InvokeContext,
74        var_addr: u64,
75        _arg2: u64,
76        _arg3: u64,
77        _arg4: u64,
78        _arg5: u64,
79        memory_mapping: &mut MemoryMapping,
80    ) -> Result<u64, Error> {
81        get_sysvar(
82            invoke_context.get_sysvar_cache().get_epoch_rewards(),
83            var_addr,
84            invoke_context.get_check_aligned(),
85            memory_mapping,
86            invoke_context,
87        )
88    }
89);
90
91declare_builtin_function!(
92    /// Get a Fees sysvar
93    SyscallGetFeesSysvar,
94    fn rust(
95        invoke_context: &mut InvokeContext,
96        var_addr: u64,
97        _arg2: u64,
98        _arg3: u64,
99        _arg4: u64,
100        _arg5: u64,
101        memory_mapping: &mut MemoryMapping,
102    ) -> Result<u64, Error> {
103        #[allow(deprecated)]
104        {
105            get_sysvar(
106                invoke_context.get_sysvar_cache().get_fees(),
107                var_addr,
108                invoke_context.get_check_aligned(),
109                memory_mapping,
110                invoke_context,
111            )
112        }
113    }
114);
115
116declare_builtin_function!(
117    /// Get a Rent sysvar
118    SyscallGetRentSysvar,
119    fn rust(
120        invoke_context: &mut InvokeContext,
121        var_addr: u64,
122        _arg2: u64,
123        _arg3: u64,
124        _arg4: u64,
125        _arg5: u64,
126        memory_mapping: &mut MemoryMapping,
127    ) -> Result<u64, Error> {
128        get_sysvar(
129            invoke_context.get_sysvar_cache().get_rent(),
130            var_addr,
131            invoke_context.get_check_aligned(),
132            memory_mapping,
133            invoke_context,
134        )
135    }
136);
137
138declare_builtin_function!(
139    /// Get a Last Restart Slot sysvar
140    SyscallGetLastRestartSlotSysvar,
141    fn rust(
142        invoke_context: &mut InvokeContext,
143        var_addr: u64,
144        _arg2: u64,
145        _arg3: u64,
146        _arg4: u64,
147        _arg5: u64,
148        memory_mapping: &mut MemoryMapping,
149    ) -> Result<u64, Error> {
150        get_sysvar(
151            invoke_context.get_sysvar_cache().get_last_restart_slot(),
152            var_addr,
153            invoke_context.get_check_aligned(),
154            memory_mapping,
155            invoke_context,
156        )
157    }
158);
miraland_bpf_loader_program/syscalls/sysvar.rs

miraland_bpf_loader_program/syscalls/
sysvar.rs
