Line data Source code
1 : #include "fd_vm_syscall.h"
2 : #include "../../runtime/program/fd_vote_program.h"
3 : #include "../../runtime/context/fd_exec_txn_ctx.h"
4 : #include "../../runtime/context/fd_exec_instr_ctx.h"
5 : #include "../../runtime/fd_system_ids.h"
6 : #include "fd_vm_syscall_macros.h"
7 :
8 : /* FIXME: In the original version of this code, there was an FD_TEST
9 : to check if the VM was attached to an instruction context (that
10 : would have crashed anyway because of pointer chasing). If the VM
11 : is being run outside the Solana runtime, it should never invoke
12 : this syscall in the first place. So we treat this as a SIGCALL in
13 : a non-crashing way for the time being. */
14 :
15 : int
16 : fd_vm_syscall_sol_get_clock_sysvar( /**/ void * _vm,
17 : /**/ ulong out_vaddr,
18 : FD_PARAM_UNUSED ulong r2,
19 : FD_PARAM_UNUSED ulong r3,
20 : FD_PARAM_UNUSED ulong r4,
21 : FD_PARAM_UNUSED ulong r5,
22 0 : /**/ ulong * _ret ) {
23 0 : fd_vm_t * vm = _vm;
24 0 : fd_exec_instr_ctx_t const * instr_ctx = vm->instr_ctx;
25 0 : if( FD_UNLIKELY( !instr_ctx ) ) return FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME;
26 :
27 0 : FD_VM_CU_UPDATE( vm, fd_ulong_sat_add( FD_VM_SYSVAR_BASE_COST, sizeof(fd_sol_sysvar_clock_t) ) );
28 :
29 0 : fd_vm_haddr_query_t var_query = {
30 0 : .vaddr = out_vaddr,
31 0 : .align = FD_VM_ALIGN_RUST_SYSVAR_CLOCK,
32 0 : .sz = sizeof(fd_sol_sysvar_clock_t),
33 0 : .is_slice = 0,
34 0 : };
35 :
36 0 : fd_vm_haddr_query_t * queries[] = { &var_query };
37 0 : FD_VM_TRANSLATE_MUT( vm, queries );
38 :
39 0 : fd_sol_sysvar_clock_t clock = fd_sysvar_cache_clock_read_nofail( instr_ctx->sysvar_cache );
40 0 : memcpy( var_query.haddr, &clock, sizeof(fd_sol_sysvar_clock_t) );
41 :
42 0 : *_ret = 0UL;
43 0 : return FD_VM_SUCCESS;
44 0 : }
45 :
46 : int
47 : fd_vm_syscall_sol_get_epoch_schedule_sysvar( /**/ void * _vm,
48 : /**/ ulong out_vaddr,
49 : FD_PARAM_UNUSED ulong r2,
50 : FD_PARAM_UNUSED ulong r3,
51 : FD_PARAM_UNUSED ulong r4,
52 : FD_PARAM_UNUSED ulong r5,
53 0 : /**/ ulong * _ret ) {
54 0 : fd_vm_t * vm = _vm;
55 0 : fd_exec_instr_ctx_t const * instr_ctx = vm->instr_ctx;
56 0 : if( FD_UNLIKELY( !instr_ctx ) ) return FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME;
57 :
58 0 : FD_VM_CU_UPDATE( vm, fd_ulong_sat_add( FD_VM_SYSVAR_BASE_COST, sizeof(fd_epoch_schedule_t) ) );
59 :
60 0 : fd_vm_haddr_query_t var_query = {
61 0 : .vaddr = out_vaddr,
62 0 : .align = FD_VM_ALIGN_RUST_SYSVAR_EPOCH_SCHEDULE,
63 0 : .sz = sizeof(fd_epoch_schedule_t),
64 0 : .is_slice = 0,
65 0 : };
66 :
67 0 : fd_vm_haddr_query_t * queries[] = { &var_query };
68 0 : FD_VM_TRANSLATE_MUT( vm, queries );
69 :
70 0 : fd_epoch_schedule_t schedule;
71 0 : if( FD_UNLIKELY( !fd_sysvar_cache_epoch_schedule_read( instr_ctx->sysvar_cache, &schedule ) ) ) {
72 0 : FD_TXN_ERR_FOR_LOG_INSTR( vm->instr_ctx->txn_ctx, FD_EXECUTOR_INSTR_ERR_UNSUPPORTED_SYSVAR, vm->instr_ctx->txn_ctx->instr_err_idx );
73 0 : return FD_VM_ERR_INVAL;
74 0 : }
75 0 : memcpy( var_query.haddr, &schedule, sizeof(fd_epoch_schedule_t) );
76 :
77 0 : *_ret = 0UL;
78 0 : return FD_VM_SUCCESS;
79 0 : }
80 :
81 : int
82 : fd_vm_syscall_sol_get_rent_sysvar( /**/ void * _vm,
83 : /**/ ulong out_vaddr,
84 : FD_PARAM_UNUSED ulong r2,
85 : FD_PARAM_UNUSED ulong r3,
86 : FD_PARAM_UNUSED ulong r4,
87 : FD_PARAM_UNUSED ulong r5,
88 0 : /**/ ulong * _ret ) {
89 0 : fd_vm_t * vm = _vm;
90 :
91 : /* Unreachable in a real SVM, used for testing */
92 :
93 0 : fd_exec_instr_ctx_t const * instr_ctx = vm->instr_ctx;
94 0 : if( FD_UNLIKELY( !instr_ctx ) ) return FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME;
95 :
96 0 : FD_VM_CU_UPDATE( vm, fd_ulong_sat_add( FD_VM_SYSVAR_BASE_COST, sizeof(fd_rent_t) ) );
97 :
98 0 : fd_vm_haddr_query_t var_query = {
99 0 : .vaddr = out_vaddr,
100 0 : .align = FD_VM_ALIGN_RUST_SYSVAR_RENT,
101 0 : .sz = sizeof(fd_rent_t),
102 0 : .is_slice = 0,
103 0 : };
104 :
105 0 : fd_vm_haddr_query_t * queries[] = { &var_query };
106 0 : FD_VM_TRANSLATE_MUT( vm, queries );
107 :
108 0 : fd_rent_t rent = fd_sysvar_cache_rent_read_nofail( instr_ctx->sysvar_cache );
109 0 : memcpy( var_query.haddr, &rent, sizeof(fd_rent_t) );
110 :
111 0 : *_ret = 0UL;
112 0 : return FD_VM_SUCCESS;
113 0 : }
114 :
115 : /* https://github.com/anza-xyz/agave/blob/v2.3.2/programs/bpf_loader/src/syscalls/sysvar.rs#L149 */
116 : int
117 : fd_vm_syscall_sol_get_last_restart_slot_sysvar( /**/ void * _vm,
118 : /**/ ulong out_vaddr,
119 : FD_PARAM_UNUSED ulong r2,
120 : FD_PARAM_UNUSED ulong r3,
121 : FD_PARAM_UNUSED ulong r4,
122 : FD_PARAM_UNUSED ulong r5,
123 0 : /**/ ulong * _ret ) {
124 0 : fd_vm_t * vm = _vm;
125 0 : fd_exec_instr_ctx_t const * instr_ctx = vm->instr_ctx;
126 0 : if( FD_UNLIKELY( !instr_ctx ) ) return FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME;
127 :
128 0 : FD_VM_CU_UPDATE( vm, fd_ulong_sat_add( FD_VM_SYSVAR_BASE_COST, sizeof(fd_sol_sysvar_last_restart_slot_t) ) );
129 :
130 0 : fd_vm_haddr_query_t var_query = {
131 0 : .vaddr = out_vaddr,
132 0 : .align = FD_VM_ALIGN_RUST_SYSVAR_LAST_RESTART_SLOT,
133 0 : .sz = sizeof(fd_sol_sysvar_last_restart_slot_t),
134 0 : .is_slice = 0,
135 0 : };
136 :
137 0 : fd_vm_haddr_query_t * queries[] = { &var_query };
138 0 : FD_VM_TRANSLATE_MUT( vm, queries );
139 :
140 0 : fd_sol_sysvar_last_restart_slot_t last_restart_slot;
141 0 : if( FD_UNLIKELY( !fd_sysvar_cache_last_restart_slot_read( vm->instr_ctx->sysvar_cache, &last_restart_slot ) ) ) {
142 0 : FD_TXN_ERR_FOR_LOG_INSTR( vm->instr_ctx->txn_ctx, FD_EXECUTOR_INSTR_ERR_UNSUPPORTED_SYSVAR, vm->instr_ctx->txn_ctx->instr_err_idx );
143 0 : return FD_VM_ERR_INVAL;
144 0 : }
145 :
146 0 : memcpy( var_query.haddr, &last_restart_slot, sizeof(fd_sol_sysvar_last_restart_slot_t) );
147 :
148 0 : *_ret = 0UL;
149 0 : return FD_VM_SUCCESS;
150 0 : }
151 :
152 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/sysvar.rs#L167-L232 */
153 : int
154 : fd_vm_syscall_sol_get_sysvar( /**/ void * _vm,
155 : /**/ ulong sysvar_id_vaddr,
156 : /**/ ulong out_vaddr,
157 : /**/ ulong offset,
158 : /**/ ulong sz,
159 : FD_PARAM_UNUSED ulong r5,
160 0 : /**/ ulong * _ret ) {
161 0 : fd_vm_t * vm = _vm;
162 0 : fd_exec_instr_ctx_t const * instr_ctx = vm->instr_ctx;
163 0 : if( FD_UNLIKELY( !instr_ctx ) ) return FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME;
164 :
165 : /* sysvar_id_cost seems to just always be 32 / 250 = 0...
166 : https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/sysvar.rs#L190-L197 */
167 0 : ulong sysvar_buf_cost = sz / FD_VM_CPI_BYTES_PER_UNIT;
168 0 : FD_VM_CU_UPDATE( vm, fd_ulong_sat_add( FD_VM_SYSVAR_BASE_COST, fd_ulong_max( sysvar_buf_cost, FD_VM_MEM_OP_BASE_COST ) ) );
169 :
170 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/sysvar.rs#L207-L211 */
171 0 : fd_vm_haddr_query_t var_query = {
172 0 : .vaddr = out_vaddr,
173 0 : .align = FD_VM_ALIGN_RUST_U8,
174 0 : .sz = sz,
175 0 : .is_slice = 1,
176 0 : };
177 :
178 0 : fd_vm_haddr_query_t * queries[] = { &var_query };
179 0 : FD_VM_TRANSLATE_MUT( vm, queries );
180 :
181 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/sysvar.rs#L199-L200 */
182 0 : const fd_pubkey_t * sysvar_id = FD_VM_MEM_HADDR_LD( vm, sysvar_id_vaddr, FD_VM_ALIGN_RUST_PUBKEY, FD_PUBKEY_FOOTPRINT );
183 :
184 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/sysvar.rs#L205-L208 */
185 0 : ulong offset_length;
186 0 : int err = fd_int_if( __builtin_uaddl_overflow( offset, sz, &offset_length ), FD_EXECUTOR_INSTR_ERR_ARITHMETIC_OVERFLOW, FD_EXECUTOR_INSTR_SUCCESS );
187 0 : if( FD_UNLIKELY( err ) ) {
188 0 : FD_VM_ERR_FOR_LOG_INSTR( vm, err );
189 0 : return FD_VM_SYSCALL_ERR_ABORT;
190 0 : }
191 :
192 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/sysvar.rs#L210-L213
193 : We don't need this, we already checked we can store in out_vaddr with requested sz. */
194 :
195 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/sysvar.rs#L215-L221 */
196 0 : if( FD_UNLIKELY( memcmp( sysvar_id->uc, fd_sysvar_clock_id.uc, FD_PUBKEY_FOOTPRINT ) &&
197 0 : memcmp( sysvar_id->uc, fd_sysvar_epoch_schedule_id.uc, FD_PUBKEY_FOOTPRINT ) &&
198 0 : memcmp( sysvar_id->uc, fd_sysvar_epoch_rewards_id.uc, FD_PUBKEY_FOOTPRINT ) &&
199 0 : memcmp( sysvar_id->uc, fd_sysvar_rent_id.uc, FD_PUBKEY_FOOTPRINT ) &&
200 0 : memcmp( sysvar_id->uc, fd_sysvar_slot_hashes_id.uc, FD_PUBKEY_FOOTPRINT ) &&
201 0 : memcmp( sysvar_id->uc, fd_sysvar_stake_history_id.uc, FD_PUBKEY_FOOTPRINT ) &&
202 0 : memcmp( sysvar_id->uc, fd_sysvar_last_restart_slot_id.uc, FD_PUBKEY_FOOTPRINT ) ) ) {
203 0 : *_ret = 2UL;
204 0 : return FD_VM_SUCCESS;
205 0 : }
206 :
207 0 : ulong sysvar_buf_len;
208 0 : uchar const * sysvar_buf =
209 0 : fd_sysvar_cache_data_query( vm->instr_ctx->sysvar_cache, sysvar_id, &sysvar_buf_len );
210 0 : if( FD_UNLIKELY( !sysvar_buf ) ) {
211 0 : *_ret = 2UL;
212 0 : return FD_VM_SUCCESS;
213 0 : }
214 :
215 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/sysvar.rs#L223-L228
216 : Note the length check is at the very end to fail after performing sufficient checks. */
217 :
218 0 : if( FD_UNLIKELY( offset_length>sysvar_buf_len ) ) {
219 0 : *_ret = 1UL;
220 0 : return FD_VM_SUCCESS;
221 0 : }
222 :
223 0 : if( FD_UNLIKELY( sz==0UL ) ) {
224 0 : *_ret = 0UL;
225 0 : return FD_VM_SUCCESS;
226 0 : }
227 :
228 0 : fd_memcpy( var_query.haddr, sysvar_buf + offset, sz );
229 0 : *_ret = 0;
230 0 : return FD_VM_SUCCESS;
231 0 : }
232 :
233 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/mod.rs#L2043-L2118 */
234 : int
235 : fd_vm_syscall_sol_get_epoch_stake( /**/ void * _vm,
236 : /**/ ulong var_addr,
237 : FD_PARAM_UNUSED ulong r2,
238 : FD_PARAM_UNUSED ulong r3,
239 : FD_PARAM_UNUSED ulong r4,
240 : FD_PARAM_UNUSED ulong r5,
241 0 : /**/ ulong * _ret ) {
242 0 : fd_vm_t * vm = (fd_vm_t *)_vm;
243 :
244 : /* Var addr of 0 returns the total active stake on the cluster.
245 :
246 : https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/mod.rs#L2057-L2075 */
247 0 : if( FD_UNLIKELY( var_addr==0UL ) ) {
248 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/mod.rs#L2065-L2066 */
249 0 : FD_VM_CU_UPDATE( vm, FD_VM_SYSCALL_BASE_COST );
250 :
251 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/mod.rs#L2074 */
252 0 : *_ret = fd_bank_total_epoch_stake_get( vm->instr_ctx->txn_ctx->bank );
253 0 : return FD_VM_SUCCESS;
254 0 : }
255 :
256 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/mod.rs#L2083-L2091
257 : FD_PUBKEY_FOOTPRINT/FD_VM_CPI_BYTES_PER_UNIT is always 32/250 = 0,
258 : so we can omit it */
259 :
260 0 : FD_VM_CU_UPDATE( vm, FD_VM_MEM_OP_BASE_COST + FD_VM_SYSCALL_BASE_COST );
261 :
262 : /* https://github.com/anza-xyz/agave/blob/v2.1.0/programs/bpf_loader/src/syscalls/mod.rs#L2103-L2104 */
263 0 : const fd_pubkey_t * vote_address = FD_VM_MEM_HADDR_LD( vm, var_addr, FD_VM_ALIGN_RUST_PUBKEY, FD_PUBKEY_FOOTPRINT );
264 :
265 : /* https://github.com/anza-xyz/agave/blob/v2.2.14/runtime/src/bank.rs#L6954 */
266 0 : fd_vote_states_t const * vote_states = fd_bank_vote_states_prev_locking_query( vm->instr_ctx->txn_ctx->bank );
267 0 : fd_vote_state_ele_t const * vote_state_ele = fd_vote_states_query_const( vote_states, vote_address );
268 0 : *_ret = vote_state_ele ? vote_state_ele->stake : 0UL;
269 0 : fd_bank_vote_states_prev_end_locking_query( vm->instr_ctx->txn_ctx->bank );
270 :
271 0 : return FD_VM_SUCCESS;
272 0 : }
273 :
274 : int
275 : fd_vm_syscall_sol_get_stack_height( /**/ void * _vm,
276 : FD_PARAM_UNUSED ulong r1,
277 : FD_PARAM_UNUSED ulong r2,
278 : FD_PARAM_UNUSED ulong r3,
279 : FD_PARAM_UNUSED ulong r4,
280 : FD_PARAM_UNUSED ulong r5,
281 0 : /**/ ulong * _ret ) {
282 : /* https://github.com/anza-xyz/agave/blob/v2.0.8/programs/bpf_loader/src/syscalls/mod.rs#L1547 */
283 0 : fd_vm_t * vm = (fd_vm_t *)_vm;
284 :
285 0 : FD_VM_CU_UPDATE( vm, FD_VM_SYSCALL_BASE_COST );
286 :
287 0 : *_ret = vm->instr_ctx->txn_ctx->instr_stack_sz;
288 0 : return FD_VM_SUCCESS;
289 0 : }
290 :
291 : int
292 : fd_vm_syscall_sol_get_return_data( /**/ void * _vm,
293 : /**/ ulong return_data_vaddr,
294 : /**/ ulong sz,
295 : /**/ ulong program_id_vaddr,
296 : FD_PARAM_UNUSED ulong r4,
297 : FD_PARAM_UNUSED ulong r5,
298 0 : /**/ ulong * _ret ) {
299 0 : fd_vm_t * vm = (fd_vm_t *)_vm;
300 :
301 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1465 */
302 0 : FD_VM_CU_UPDATE( vm, FD_VM_SYSCALL_BASE_COST );
303 :
304 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1467 */
305 0 : fd_txn_return_data_t const * return_data = &vm->instr_ctx->txn_ctx->return_data;
306 :
307 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1468 */
308 0 : ulong length = fd_ulong_min( return_data->len, sz );
309 :
310 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1469-L1492 */
311 0 : if( FD_LIKELY( length ) ) {
312 :
313 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1470-L1474 */
314 0 : FD_VM_CU_UPDATE( vm, fd_ulong_sat_add( length, sizeof(fd_pubkey_t) ) / FD_VM_CPI_BYTES_PER_UNIT );
315 :
316 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1476-L1481 */
317 0 : fd_vm_haddr_query_t return_data_query = {
318 0 : .vaddr = return_data_vaddr,
319 0 : .align = FD_VM_ALIGN_RUST_U8,
320 0 : .sz = length,
321 0 : .is_slice = 1
322 0 : };
323 :
324 0 : fd_vm_haddr_query_t program_id_query = {
325 0 : .vaddr = program_id_vaddr,
326 0 : .align = FD_VM_ALIGN_RUST_PUBKEY,
327 0 : .sz = sizeof(fd_pubkey_t),
328 0 : .is_slice = 0
329 0 : };
330 :
331 0 : fd_vm_haddr_query_t * queries[] = { &return_data_query, &program_id_query };
332 0 : FD_VM_TRANSLATE_MUT( vm, queries );
333 :
334 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1490-L1491 */
335 0 : memcpy( return_data_query.haddr, return_data->data, length );
336 0 : memcpy( program_id_query.haddr, &return_data->program_id, sizeof(fd_pubkey_t) );
337 0 : }
338 :
339 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1495 */
340 0 : *_ret = return_data->len;
341 0 : return FD_VM_SUCCESS;
342 0 : }
343 :
344 : int
345 : fd_vm_syscall_sol_set_return_data( /**/ void * _vm,
346 : /**/ ulong src_vaddr,
347 : /**/ ulong src_sz,
348 : FD_PARAM_UNUSED ulong r3,
349 : FD_PARAM_UNUSED ulong r4,
350 : FD_PARAM_UNUSED ulong r5,
351 0 : /**/ ulong * _ret ) {
352 : /* https://github.com/anza-xyz/agave/blob/v2.0.8/programs/bpf_loader/src/syscalls/mod.rs#L1297 */
353 0 : fd_vm_t * vm = (fd_vm_t *)_vm;
354 :
355 : /* In the original version of this code, there was an FD_TEST
356 : to check if the VM was attached to an instruction context (that
357 : would have crashed anyway because of pointer chasing). If the VM
358 : is being run outside the Solana runtime, it should never invoke
359 : this syscall in the first place. So we treat this as a SIGCALL in
360 : a non-crashing way for the time being. */
361 0 : fd_exec_instr_ctx_t const * instr_ctx = vm->instr_ctx;
362 0 : if( FD_UNLIKELY( !instr_ctx ) ) return FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME;
363 :
364 0 : FD_VM_CU_UPDATE( vm, fd_ulong_sat_add( FD_VM_SYSCALL_BASE_COST, src_sz / FD_VM_CPI_BYTES_PER_UNIT ) );
365 :
366 : /* https://github.com/anza-xyz/agave/blob/v2.0.8/programs/bpf_loader/src/syscalls/mod.rs#L1316 */
367 0 : if( FD_UNLIKELY( src_sz>FD_VM_RETURN_DATA_MAX ) ) {
368 : /* TODO: this is a bit annoying, we may want to unify return codes...
369 : - FD_VM_SYSCALL_ERR_RETURN_DATA_TOO_LARGE is Agave's return code,
370 : also used for logging */
371 0 : FD_VM_ERR_FOR_LOG_SYSCALL( vm, FD_VM_SYSCALL_ERR_RETURN_DATA_TOO_LARGE );
372 0 : return FD_VM_SYSCALL_ERR_RETURN_DATA_TOO_LARGE;
373 0 : }
374 :
375 : /* src_sz == 0 is ok */
376 0 : void const * src = FD_VM_MEM_SLICE_HADDR_LD( vm, src_vaddr, FD_VM_ALIGN_RUST_U8, src_sz );
377 :
378 : /* https://github.com/anza-xyz/agave/blob/v2.2.0/programs/bpf_loader/src/syscalls/mod.rs#L1480-L1484 */
379 0 : fd_pubkey_t const * program_id = NULL;
380 0 : int err = fd_exec_instr_ctx_get_last_program_key( vm->instr_ctx, &program_id );
381 0 : if( FD_UNLIKELY( err ) ) {
382 0 : FD_VM_ERR_FOR_LOG_INSTR( vm, err );
383 0 : return err;
384 0 : }
385 :
386 0 : fd_txn_return_data_t * return_data = &instr_ctx->txn_ctx->return_data;
387 :
388 0 : return_data->len = src_sz;
389 0 : if( FD_LIKELY( src_sz!=0UL ) ) {
390 0 : fd_memcpy( return_data->data, src, src_sz );
391 0 : }
392 0 : return_data->program_id = *program_id;
393 :
394 0 : *_ret = 0;
395 0 : return FD_VM_SUCCESS;
396 0 : }
397 :
398 : /* Used to query and convey information about the sibling instruction
399 : https://github.com/anza-xyz/agave/blob/70089cce5119c9afaeb2986e2ecaa6d4505ec15d/sdk/program/src/instruction.rs#L676
400 :
401 : */
402 : struct fd_vm_syscall_processed_sibling_instruction {
403 : /* Length of the instruction data */
404 : ulong data_len;
405 : /* Number of accounts */
406 : ulong accounts_len;
407 : };
408 : typedef struct fd_vm_syscall_processed_sibling_instruction fd_vm_syscall_processed_sibling_instruction_t;
409 :
410 0 : #define FD_VM_SYSCALL_PROCESSED_SIBLING_INSTRUCTION_SIZE (16UL)
411 0 : #define FD_VM_SYSCALL_PROCESSED_SIBLING_INSTRUCTION_ALIGN (8UL )
412 :
413 : /* https://github.com/anza-xyz/agave/blob/70089cce5119c9afaeb2986e2ecaa6d4505ec15d/programs/bpf_loader/src/syscalls/mod.rs#L1402 */
414 : int
415 : fd_vm_syscall_sol_get_processed_sibling_instruction(
416 : void * _vm,
417 : ulong index,
418 : ulong result_meta_vaddr,
419 : ulong result_program_id_vaddr,
420 : ulong result_data_vaddr,
421 : ulong result_accounts_vaddr,
422 : ulong * _ret
423 0 : ) {
424 0 : fd_vm_t * vm = (fd_vm_t *)_vm;
425 :
426 : /* Consume base compute cost
427 : https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1513 */
428 0 : FD_VM_CU_UPDATE( vm, FD_VM_SYSCALL_BASE_COST );
429 :
430 : /* Get the current instruction stack height. This value is 1-indexed
431 : (top level instruction has a stack height of 1).
432 : https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1517 */
433 0 : ulong stack_height = vm->instr_ctx->txn_ctx->instr_stack_sz;
434 :
435 : /* Reverse iterate through the instruction trace, ignoring anything except instructions on the same level.
436 : https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1518-L1522 */
437 0 : ulong instruction_trace_length = vm->instr_ctx->txn_ctx->instr_trace_length;
438 0 : ulong reverse_index_at_stack_height = 0UL;
439 0 : fd_exec_instr_trace_entry_t * found_instruction_context = NULL;
440 0 : for( ulong index_in_trace=instruction_trace_length; index_in_trace>0UL; index_in_trace-- ) {
441 :
442 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1524-L1526
443 : This error can never happen */
444 :
445 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1527-L1529 */
446 0 : fd_exec_instr_trace_entry_t * instruction_context = &vm->instr_ctx->txn_ctx->instr_trace[ index_in_trace-1UL ];
447 0 : if( FD_LIKELY( instruction_context->stack_height<stack_height ) ) {
448 0 : break;
449 0 : }
450 :
451 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1530-L1536 */
452 0 : if( FD_UNLIKELY( instruction_context->stack_height==stack_height ) ) {
453 0 : if( FD_UNLIKELY( fd_ulong_sat_add( index, 1UL )==reverse_index_at_stack_height ) ) {
454 0 : found_instruction_context = instruction_context;
455 0 : break;
456 0 : }
457 0 : reverse_index_at_stack_height = fd_ulong_sat_add( reverse_index_at_stack_height, 1UL );
458 0 : }
459 0 : }
460 :
461 : /* If we have found an entry, then copy the instruction into the
462 : result addresses.
463 : https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1539-L1588
464 : */
465 0 : if( FD_LIKELY( found_instruction_context != NULL ) ) {
466 0 : fd_instr_info_t * instr_info = found_instruction_context->instr_info;
467 :
468 0 : fd_vm_haddr_query_t result_header_query = {
469 0 : .vaddr = result_meta_vaddr,
470 0 : .align = FD_VM_SYSCALL_PROCESSED_SIBLING_INSTRUCTION_ALIGN,
471 0 : .sz = FD_VM_SYSCALL_PROCESSED_SIBLING_INSTRUCTION_SIZE,
472 0 : .is_slice = 0,
473 0 : };
474 :
475 0 : fd_vm_haddr_query_t * queries[] = { &result_header_query };
476 0 : FD_VM_TRANSLATE_MUT( vm, queries );
477 :
478 0 : fd_vm_syscall_processed_sibling_instruction_t * result_header = result_header_query.haddr;
479 :
480 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1546-L1583 */
481 0 : if( result_header->data_len==instr_info->data_sz && result_header->accounts_len==instr_info->acct_cnt ) {
482 0 : fd_vm_haddr_query_t program_id_query = {
483 0 : .vaddr = result_program_id_vaddr,
484 0 : .align = FD_VM_ALIGN_RUST_PUBKEY,
485 0 : .sz = sizeof(fd_pubkey_t),
486 0 : .is_slice = 0,
487 0 : };
488 :
489 0 : fd_vm_haddr_query_t data_query = {
490 0 : .vaddr = result_data_vaddr,
491 0 : .align = FD_VM_ALIGN_RUST_U8,
492 0 : .sz = result_header->data_len,
493 0 : .is_slice = 1,
494 0 : };
495 :
496 0 : fd_vm_haddr_query_t accounts_query = {
497 0 : .vaddr = result_accounts_vaddr,
498 0 : .align = FD_VM_RUST_ACCOUNT_META_ALIGN,
499 0 : .sz = fd_ulong_sat_mul( result_header->accounts_len, FD_VM_RUST_ACCOUNT_META_SIZE ),
500 0 : .is_slice = 1,
501 0 : };
502 :
503 0 : fd_vm_haddr_query_t * queries[] = { &program_id_query, &data_query, &accounts_query, &result_header_query };
504 0 : FD_VM_TRANSLATE_MUT( vm, queries );
505 :
506 0 : fd_pubkey_t * program_id = program_id_query.haddr;
507 0 : uchar * data = data_query.haddr;
508 0 : fd_vm_rust_account_meta_t * accounts = accounts_query.haddr;
509 :
510 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1561-L1562 */
511 0 : fd_pubkey_t const * instr_ctx_program_id = NULL;
512 0 : int err = fd_exec_txn_ctx_get_key_of_account_at_index( vm->instr_ctx->txn_ctx,
513 0 : instr_info->program_id,
514 0 : &instr_ctx_program_id );
515 0 : if( FD_UNLIKELY( err ) ) {
516 0 : FD_VM_ERR_FOR_LOG_INSTR( vm, err );
517 0 : return err;
518 0 : }
519 0 : fd_memcpy( program_id, instr_ctx_program_id, sizeof(fd_pubkey_t) );
520 :
521 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1563 */
522 0 : fd_memcpy( data, instr_info->data, instr_info->data_sz );
523 :
524 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1564-L1581 */
525 0 : for( ushort i=0; i<instr_info->acct_cnt; i++ ) {
526 0 : fd_pubkey_t const * account_key;
527 0 : ushort txn_idx = instr_info->accounts[ i ].index_in_transaction;
528 0 : err = fd_exec_txn_ctx_get_key_of_account_at_index( vm->instr_ctx->txn_ctx, txn_idx, &account_key );
529 0 : if( FD_UNLIKELY( err ) ) {
530 0 : FD_VM_ERR_FOR_LOG_INSTR( vm, err );
531 0 : return err;
532 0 : }
533 :
534 0 : fd_memcpy( accounts[ i ].pubkey, account_key, sizeof(fd_pubkey_t) );
535 0 : accounts[ i ].is_signer = !!(instr_info->accounts[ i ].is_signer );
536 0 : accounts[ i ].is_writable = !!(instr_info->accounts[ i ].is_writable );
537 0 : }
538 0 : } else {
539 : /* Copy the actual metadata into the result meta struct
540 : https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1584-L1586 */
541 0 : result_header->data_len = instr_info->data_sz;
542 0 : result_header->accounts_len = instr_info->acct_cnt;
543 0 : }
544 :
545 : /* Return true as we found a sibling instruction
546 : https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1588 */
547 0 : *_ret = 1UL;
548 0 : return FD_VM_SUCCESS;
549 0 : }
550 :
551 : /* Return false if we didn't find a sibling instruction
552 : https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/mod.rs#L1590 */
553 0 : *_ret = 0UL;
554 0 : return FD_VM_SUCCESS;
555 0 : }
556 :
557 : /* https://github.com/anza-xyz/agave/blob/v2.3.1/programs/bpf_loader/src/syscalls/sysvar.rs#L80 */
558 : int
559 : fd_vm_syscall_sol_get_epoch_rewards_sysvar( /**/ void * _vm,
560 : /**/ ulong out_vaddr,
561 : FD_PARAM_UNUSED ulong r2,
562 : FD_PARAM_UNUSED ulong r3,
563 : FD_PARAM_UNUSED ulong r4,
564 : FD_PARAM_UNUSED ulong r5,
565 0 : /**/ ulong * _ret ) {
566 0 : fd_vm_t * vm = _vm;
567 0 : fd_exec_instr_ctx_t const * instr_ctx = vm->instr_ctx;
568 0 : if( FD_UNLIKELY( !instr_ctx ) ) return FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME;
569 :
570 0 : FD_VM_CU_UPDATE( vm, fd_ulong_sat_add( FD_VM_SYSVAR_BASE_COST, sizeof(fd_sysvar_epoch_rewards_t) ) );
571 :
572 0 : uchar * out = FD_VM_MEM_HADDR_ST( vm, out_vaddr, FD_VM_ALIGN_RUST_SYSVAR_EPOCH_REWARDS, sizeof(fd_sysvar_epoch_rewards_t) );
573 :
574 0 : fd_sysvar_epoch_rewards_t epoch_rewards;
575 0 : if( FD_UNLIKELY( !fd_sysvar_cache_epoch_rewards_read( instr_ctx->sysvar_cache, &epoch_rewards ) ) ) {
576 0 : FD_TXN_ERR_FOR_LOG_INSTR( vm->instr_ctx->txn_ctx, FD_EXECUTOR_INSTR_ERR_UNSUPPORTED_SYSVAR, vm->instr_ctx->txn_ctx->instr_err_idx );
577 0 : return FD_VM_ERR_INVAL;
578 0 : }
579 0 : memcpy( out, &epoch_rewards, sizeof(fd_sysvar_epoch_rewards_t) );
580 0 : memset( out+81, 0, 7 ); /* padding */
581 :
582 0 : *_ret = 0UL;
583 0 : return FD_VM_SUCCESS;
584 0 : }
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