Line data Source code
1 : #include "fd_vm_private.h"
2 : #include "../runtime/context/fd_exec_epoch_ctx.h"
3 : #include "../runtime/context/fd_exec_slot_ctx.h"
4 : #include "../features/fd_features.h"
5 :
6 : /* fd_vm_syscall_strerror() returns the error message corresponding to err,
7 : intended to be logged by log_collector, or an empty string if the error code
8 : should be omitted in logs for whatever reason. Omitted examples are success,
9 : panic (logged in place)...
10 : See also fd_log_collector_program_failure(). */
11 : char const *
12 237 : fd_vm_syscall_strerror( int err ) {
13 :
14 237 : switch( err ) {
15 :
16 6 : case FD_VM_SYSCALL_ERR_INVALID_STRING: return "invalid utf-8 sequence"; // truncated
17 9 : case FD_VM_SYSCALL_ERR_ABORT: return "SBF program panicked";
18 24 : case FD_VM_SYSCALL_ERR_PANIC: return "SBF program Panicked in..."; // truncated
19 0 : case FD_VM_SYSCALL_ERR_INVOKE_CONTEXT_BORROW_FAILED: return "Cannot borrow invoke context";
20 0 : case FD_VM_SYSCALL_ERR_MALFORMED_SIGNER_SEED: return "Malformed signer seed"; // truncated
21 6 : case FD_VM_SYSCALL_ERR_BAD_SEEDS: return "Could not create program address with signer seeds"; // truncated
22 0 : case FD_VM_SYSCALL_ERR_PROGRAM_NOT_SUPPORTED: return "Program not supported by inner instructions"; // truncated
23 24 : case FD_VM_SYSCALL_ERR_UNALIGNED_POINTER: return "Unaligned pointer";
24 0 : case FD_VM_SYSCALL_ERR_TOO_MANY_SIGNERS: return "Too many signers";
25 0 : case FD_VM_SYSCALL_ERR_INSTRUCTION_TOO_LARGE: return "Instruction passed to inner instruction is too large"; // truncated
26 0 : case FD_VM_SYSCALL_ERR_TOO_MANY_ACCOUNTS: return "Too many accounts passed to inner instruction";
27 111 : case FD_VM_SYSCALL_ERR_COPY_OVERLAPPING: return "Overlapping copy";
28 0 : case FD_VM_SYSCALL_ERR_RETURN_DATA_TOO_LARGE: return "Return data too large"; // truncated
29 9 : case FD_VM_SYSCALL_ERR_TOO_MANY_SLICES: return "Hashing too many sequences";
30 18 : case FD_VM_SYSCALL_ERR_INVALID_LENGTH: return "InvalidLength";
31 0 : case FD_VM_SYSCALL_ERR_MAX_INSTRUCTION_DATA_LEN_EXCEEDED: return "Invoked an instruction with data that is too large"; // truncated
32 0 : case FD_VM_SYSCALL_ERR_MAX_INSTRUCTION_ACCOUNTS_EXCEEDED: return "Invoked an instruction with too many accounts"; // truncated
33 0 : case FD_VM_SYSCALL_ERR_MAX_INSTRUCTION_ACCOUNT_INFOS_EXCEEDED: return "Invoked an instruction with too many account info's"; // truncated
34 24 : case FD_VM_SYSCALL_ERR_INVALID_ATTRIBUTE: return "InvalidAttribute";
35 0 : case FD_VM_SYSCALL_ERR_INVALID_POINTER: return "Invalid pointer";
36 0 : case FD_VM_SYSCALL_ERR_ARITHMETIC_OVERFLOW: return "Arithmetic overflow";
37 :
38 0 : case FD_VM_SYSCALL_ERR_INSTR_ERR: return "Instruction error";
39 0 : case FD_VM_SYSCALL_ERR_INVALID_PDA: return "Invalid PDA";
40 0 : case FD_VM_SYSCALL_ERR_COMPUTE_BUDGET_EXCEEDED: return "Compute budget exceeded";
41 0 : case FD_VM_SYSCALL_ERR_SEGFAULT: return "Segmentation fault";
42 0 : case FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME: return "Syscall executed outside runtime";
43 :
44 :
45 3 : case FD_VM_SYSCALL_ERR_POSEIDON_INVALID_PARAMS: return "Syscall error: Invalid parameters.";
46 3 : case FD_VM_SYSCALL_ERR_POSEIDON_INVALID_ENDIANNESS: return "Syscall error: Invalid endianness.";
47 :
48 0 : default: break;
49 237 : }
50 :
51 0 : return "";
52 237 : }
53 :
54 : /* fd_vm_ebpf_strerror() returns the error message corresponding to err,
55 : intended to be logged by log_collector, or an empty string if the error code
56 : should be omitted in logs for whatever reason.
57 : See also fd_log_collector_program_failure(). */
58 : char const *
59 1206 : fd_vm_ebpf_strerror( int err ) {
60 :
61 1206 : switch( err ) {
62 :
63 0 : case FD_VM_ERR_EBPF_ELF_ERROR: return "ELF error"; // truncated
64 0 : case FD_VM_ERR_EBPF_FUNCTION_ALREADY_REGISTERED: return "function was already registered"; // truncated
65 0 : case FD_VM_ERR_EBPF_CALL_DEPTH_EXCEEDED: return "exceeded max BPF to BPF call depth";
66 0 : case FD_VM_ERR_EBPF_EXIT_ROOT_CALL_FRAME: return "attempted to exit root call frame";
67 0 : case FD_VM_ERR_EBPF_DIVIDE_BY_ZERO: return "divide by zero at BPF instruction";
68 0 : case FD_VM_ERR_EBPF_DIVIDE_OVERFLOW: return "division overflow at BPF instruction";
69 0 : case FD_VM_ERR_EBPF_EXECUTION_OVERRUN: return "attempted to execute past the end of the text segment at BPF instruction";
70 0 : case FD_VM_ERR_EBPF_CALL_OUTSIDE_TEXT_SEGMENT: return "callx attempted to call outside of the text segment";
71 0 : case FD_VM_ERR_EBPF_EXCEEDED_MAX_INSTRUCTIONS: return "exceeded CUs meter at BPF instruction";
72 0 : case FD_VM_ERR_EBPF_JIT_NOT_COMPILED: return "program has not been JIT-compiled";
73 0 : case FD_VM_ERR_EBPF_INVALID_VIRTUAL_ADDRESS: return "invalid virtual address"; // truncated
74 0 : case FD_VM_ERR_EBPF_INVALID_MEMORY_REGION: return "Invalid memory region at index"; // truncated
75 1206 : case FD_VM_ERR_EBPF_ACCESS_VIOLATION: return "Access violation"; // truncated
76 0 : case FD_VM_ERR_EBPF_STACK_ACCESS_VIOLATION: return "Access violation in stack frame"; // truncated
77 0 : case FD_VM_ERR_EBPF_INVALID_INSTRUCTION: return "invalid BPF instruction";
78 0 : case FD_VM_ERR_EBPF_UNSUPPORTED_INSTRUCTION: return "unsupported BPF instruction";
79 0 : case FD_VM_ERR_EBPF_EXHAUSTED_TEXT_SEGMENT: return "Compilation exhausted text segment at BPF instruction"; // truncated
80 0 : case FD_VM_ERR_EBPF_LIBC_INVOCATION_FAILED: return "Libc calling returned error code"; // truncated
81 0 : case FD_VM_ERR_EBPF_VERIFIER_ERROR: return "Verifier error"; // truncated
82 0 : case FD_VM_ERR_EBPF_SYSCALL_ERROR: return ""; // handled explicitly via fd_vm_syscall_strerror()
83 :
84 0 : default: break;
85 1206 : }
86 :
87 0 : return "";
88 1206 : }
89 :
90 : /* fd_vm_strerror() returns the error message corresponding to err, used internally
91 : for system logs, NOT for log_collector / transaction logs. */
92 : char const *
93 81 : fd_vm_strerror( int err ) {
94 :
95 81 : switch( err ) {
96 :
97 : /* "Standard" Firedancer error codes */
98 :
99 3 : case FD_VM_SUCCESS: return "SUCCESS success";
100 3 : case FD_VM_ERR_INVAL: return "INVAL invalid request";
101 3 : case FD_VM_ERR_UNSUP: return "UNSUP unsupported request";
102 3 : case FD_VM_ERR_PERM: return "PERM unauthorized request";
103 3 : case FD_VM_ERR_FULL: return "FULL storage full";
104 3 : case FD_VM_ERR_EMPTY: return "EMPTY nothing to do";
105 3 : case FD_VM_ERR_IO: return "IO input-output error";
106 3 : case FD_VM_ERR_AGAIN: return "AGAIN try again later";
107 :
108 : /* VM exec error codes */
109 :
110 3 : case FD_VM_ERR_SIGTEXT: return "SIGTEXT illegal program counter";
111 3 : case FD_VM_ERR_SIGSPLIT: return "SIGSPLIT split multiword instruction";
112 3 : case FD_VM_ERR_SIGCALL: return "unsupported BPF instruction";
113 3 : case FD_VM_ERR_SIGSTACK: return "SIGSTACK call depth limit exceeded";
114 3 : case FD_VM_ERR_SIGILL: return "SIGILL illegal instruction";
115 3 : case FD_VM_ERR_SIGSEGV: return "SIGSEGV illegal memory address";
116 3 : case FD_VM_ERR_SIGBUS: return "SIGBUS misaligned memory address";
117 3 : case FD_VM_ERR_SIGRDONLY: return "SIGRDONLY illegal write";
118 3 : case FD_VM_ERR_SIGCOST: return "SIGCOST compute unit limit exceeded";
119 0 : case FD_VM_ERR_SIGFPE: return "SIGFPE division by zero";
120 0 : case FD_VM_ERR_SIGFPE_OF: return "SIGFPE division overflow";
121 0 : case FD_VM_ERR_SIGSYSCALL: return "SIGSYSCALL syscall error";
122 0 : case FD_VM_ERR_SIGABORT: return "SIGABORT abort error";
123 :
124 : /* VM validate error codes */
125 :
126 3 : case FD_VM_ERR_INVALID_OPCODE: return "INVALID_OPCODE detected an invalid opcode";
127 3 : case FD_VM_ERR_INVALID_SRC_REG: return "INVALID_SRC_REG detected an invalid source register";
128 3 : case FD_VM_ERR_INVALID_DST_REG: return "INVALID_DST_REG detected an invalid destination register";
129 3 : case FD_VM_ERR_INF_LOOP: return "INF_LOOP detected an infinite loop";
130 3 : case FD_VM_ERR_JMP_OUT_OF_BOUNDS: return "JMP_OUT_OF_BOUNDS detected an out of bounds jump";
131 3 : case FD_VM_ERR_JMP_TO_ADDL_IMM: return "JMP_TO_ADDL_IMM detected a jump to an addl imm";
132 3 : case FD_VM_ERR_INVALID_END_IMM: return "INVALID_END_IMM detected an invalid immediate for an endianness conversion instruction";
133 3 : case FD_VM_ERR_INCOMPLETE_LDQ: return "INCOMPLETE_LDQ detected an incomplete ldq at program end";
134 3 : case FD_VM_ERR_LDQ_NO_ADDL_IMM: return "LDQ_NO_ADDL_IMM detected a ldq without an addl imm following it";
135 3 : case FD_VM_ERR_NO_SUCH_EXT_CALL: return "NO_SUCH_EXT_CALL detected a call imm with no function was registered for that immediate";
136 0 : case FD_VM_ERR_INVALID_REG: return "INVALID_REG detected an invalid register number in a callx instruction";
137 0 : case FD_VM_ERR_BAD_TEXT: return "BAD_TEXT detected a bad text section";
138 0 : case FD_VM_SH_OVERFLOW: return "SH_OVERFLOW detected a shift overflow in an instruction";
139 0 : case FD_VM_TEXT_SZ_UNALIGNED: return "TEXT_SZ_UNALIGNED detected an unaligned text section size (not a multiple of 8)";
140 :
141 0 : default: break;
142 81 : }
143 :
144 0 : return "UNKNOWN probably not a FD_VM_ERR code";
145 81 : }
146 :
147 : /* FIXME: add a pedantic version of this validation that does things
148 : like:
149 : - only 0 imms when the instruction does not use an imm
150 : - same as above but for src/dst reg, offset */
151 : /* FIXME: HANDLING OF LDQ ON NEWER SBPF VERSUS OLDER SBPF (AND WITH CALL
152 : REG) */
153 : /* FIXME: LINK TO SOLANA CODE VALIDATE AND DOUBLE CHECK THIS BEHAVES
154 : IDENTICALLY! */
155 :
156 : int
157 330351 : fd_vm_validate( fd_vm_t const * vm ) {
158 :
159 330351 : ulong sbpf_version = vm->sbpf_version;
160 :
161 : /* A mapping of all the possible 1-byte sBPF opcodes to their
162 : validation criteria. */
163 :
164 697874592 : # define FD_VALID ((uchar)0) /* Valid opcode */
165 330351 : # define FD_CHECK_JMP_V3 ((uchar)1) /* Validation should check that the instruction is a valid jump (v3+) */
166 554790 : # define FD_CHECK_END ((uchar)2) /* Validation should check that the instruction is a valid endianness conversion */
167 13773540 : # define FD_CHECK_ST ((uchar)3) /* Validation should check that the instruction is a valid store */
168 1401681 : # define FD_CHECK_LDQ ((uchar)4) /* Validation should check that the instruction is a valid load-quad */
169 70184115 : # define FD_CHECK_DIV ((uchar)5) /* Validation should check that the instruction is a valid division by immediate */
170 49307367 : # define FD_CHECK_SH32 ((uchar)6) /* Validation should check that the immediate is a valid 32-bit shift exponent */
171 50251998 : # define FD_CHECK_SH64 ((uchar)7) /* Validation should check that the immediate is a valid 64-bit shift exponent */
172 69437406 : # define FD_INVALID ((uchar)8) /* The opcode is invalid */
173 442191 : # define FD_CHECK_CALL_REG ((uchar)9) /* Validation should check that callx has valid register number */
174 658620 : # define FD_CHECK_CALL_REG_DEPR ((uchar)10) /* Older / deprecated FD_CHECK_CALLX */
175 330351 : # define FD_CHECK_CALL_IMM ((uchar)11) /* Check call against functions registry */
176 330351 : # define FD_CHECK_SYSCALL ((uchar)12) /* Check call against syscalls registry */
177 5218818 : # define FD_CHECK_JMP_V0 ((uchar)13) /* Validation should check that the instruction is a valid jump (v0..v2) */
178 :
179 330351 : uchar FD_CHECK_JMP = FD_VM_SBPF_STATIC_SYSCALLS (sbpf_version) ? FD_CHECK_JMP_V3 : FD_CHECK_JMP_V0;
180 :
181 330351 : uchar validation_map[ 256 ] = {
182 : /* 0x00 */ FD_INVALID, /* 0x01 */ FD_INVALID, /* 0x02 */ FD_INVALID, /* 0x03 */ FD_INVALID,
183 : /* 0x04 */ FD_VALID, /* 0x05 */ FD_CHECK_JMP, /* 0x06 */ FD_INVALID, /* 0x07 */ FD_VALID,
184 : /* 0x08 */ FD_INVALID, /* 0x09 */ FD_INVALID, /* 0x0a */ FD_INVALID, /* 0x0b */ FD_INVALID,
185 : /* 0x0c */ FD_VALID, /* 0x0d */ FD_INVALID, /* 0x0e */ FD_INVALID, /* 0x0f */ FD_VALID,
186 : /* 0x10 */ FD_INVALID, /* 0x11 */ FD_INVALID, /* 0x12 */ FD_INVALID, /* 0x13 */ FD_INVALID,
187 : /* 0x14 */ FD_VALID, /* 0x15 */ FD_CHECK_JMP, /* 0x16 */ FD_INVALID, /* 0x17 */ FD_VALID,
188 : /* 0x18 */ FD_INVALID, /* 0x19 */ FD_INVALID, /* 0x1a */ FD_INVALID, /* 0x1b */ FD_INVALID,
189 : /* 0x1c */ FD_VALID, /* 0x1d */ FD_CHECK_JMP, /* 0x1e */ FD_INVALID, /* 0x1f */ FD_VALID,
190 : /* 0x20 */ FD_INVALID, /* 0x21 */ FD_INVALID, /* 0x22 */ FD_INVALID, /* 0x23 */ FD_INVALID,
191 : /* 0x24 */ FD_INVALID, /* 0x25 */ FD_CHECK_JMP, /* 0x26 */ FD_INVALID, /* 0x27 */ FD_CHECK_ST,
192 : /* 0x28 */ FD_INVALID, /* 0x29 */ FD_INVALID, /* 0x2a */ FD_INVALID, /* 0x2b */ FD_INVALID,
193 : /* 0x2c */ FD_VALID, /* 0x2d */ FD_CHECK_JMP, /* 0x2e */ FD_INVALID, /* 0x2f */ FD_CHECK_ST,
194 : /* 0x30 */ FD_INVALID, /* 0x31 */ FD_INVALID, /* 0x32 */ FD_INVALID, /* 0x33 */ FD_INVALID,
195 : /* 0x34 */ FD_INVALID, /* 0x35 */ FD_CHECK_JMP, /* 0x36 */ FD_VALID, /* 0x37 */ FD_CHECK_ST,
196 : /* 0x38 */ FD_INVALID, /* 0x39 */ FD_INVALID, /* 0x3a */ FD_INVALID, /* 0x3b */ FD_INVALID,
197 : /* 0x3c */ FD_VALID, /* 0x3d */ FD_CHECK_JMP, /* 0x3e */ FD_VALID, /* 0x3f */ FD_CHECK_ST,
198 : /* 0x40 */ FD_INVALID, /* 0x41 */ FD_INVALID, /* 0x42 */ FD_INVALID, /* 0x43 */ FD_INVALID,
199 : /* 0x44 */ FD_VALID, /* 0x45 */ FD_CHECK_JMP, /* 0x46 */ FD_CHECK_DIV, /* 0x47 */ FD_VALID,
200 : /* 0x48 */ FD_INVALID, /* 0x49 */ FD_INVALID, /* 0x4a */ FD_INVALID, /* 0x4b */ FD_INVALID,
201 : /* 0x4c */ FD_VALID, /* 0x4d */ FD_CHECK_JMP, /* 0x4e */ FD_VALID, /* 0x4f */ FD_VALID,
202 : /* 0x50 */ FD_INVALID, /* 0x51 */ FD_INVALID, /* 0x52 */ FD_INVALID, /* 0x53 */ FD_INVALID,
203 : /* 0x54 */ FD_VALID, /* 0x55 */ FD_CHECK_JMP, /* 0x56 */ FD_CHECK_DIV, /* 0x57 */ FD_VALID,
204 : /* 0x58 */ FD_INVALID, /* 0x59 */ FD_INVALID, /* 0x5a */ FD_INVALID, /* 0x5b */ FD_INVALID,
205 : /* 0x5c */ FD_VALID, /* 0x5d */ FD_CHECK_JMP, /* 0x5e */ FD_VALID, /* 0x5f */ FD_VALID,
206 : /* 0x60 */ FD_INVALID, /* 0x61 */ FD_INVALID, /* 0x62 */ FD_INVALID, /* 0x63 */ FD_INVALID,
207 : /* 0x64 */ FD_CHECK_SH32, /* 0x65 */ FD_CHECK_JMP, /* 0x66 */ FD_CHECK_DIV, /* 0x67 */ FD_CHECK_SH64,
208 : /* 0x68 */ FD_INVALID, /* 0x69 */ FD_INVALID, /* 0x6a */ FD_INVALID, /* 0x6b */ FD_INVALID,
209 : /* 0x6c */ FD_VALID, /* 0x6d */ FD_CHECK_JMP, /* 0x6e */ FD_VALID, /* 0x6f */ FD_VALID,
210 : /* 0x70 */ FD_INVALID, /* 0x71 */ FD_INVALID, /* 0x72 */ FD_INVALID, /* 0x73 */ FD_INVALID,
211 : /* 0x74 */ FD_CHECK_SH32, /* 0x75 */ FD_CHECK_JMP, /* 0x76 */ FD_CHECK_DIV, /* 0x77 */ FD_CHECK_SH64,
212 : /* 0x78 */ FD_INVALID, /* 0x79 */ FD_INVALID, /* 0x7a */ FD_INVALID, /* 0x7b */ FD_INVALID,
213 : /* 0x7c */ FD_VALID, /* 0x7d */ FD_CHECK_JMP, /* 0x7e */ FD_VALID, /* 0x7f */ FD_VALID,
214 : /* 0x80 */ FD_INVALID, /* 0x81 */ FD_INVALID, /* 0x82 */ FD_INVALID, /* 0x83 */ FD_INVALID,
215 : /* 0x84 */ FD_INVALID, /* 0x85 */ FD_CHECK_CALL_IMM,/*0x86*/FD_VALID, /* 0x87 */ FD_CHECK_ST,
216 : /* 0x88 */ FD_INVALID, /* 0x89 */ FD_INVALID, /* 0x8a */ FD_INVALID, /* 0x8b */ FD_INVALID,
217 : /* 0x8c */ FD_VALID, /* 0x8d */ FD_CHECK_CALL_REG,/*0x8e*/FD_VALID, /* 0x8f */ FD_CHECK_ST,
218 : /* 0x90 */ FD_INVALID, /* 0x91 */ FD_INVALID, /* 0x92 */ FD_INVALID, /* 0x93 */ FD_INVALID,
219 : /* 0x94 */ FD_INVALID, /* 0x95 */ FD_CHECK_SYSCALL,/*0x96*/ FD_VALID, /* 0x97 */ FD_CHECK_ST,
220 : /* 0x98 */ FD_INVALID, /* 0x99 */ FD_INVALID, /* 0x9a */ FD_INVALID, /* 0x9b */ FD_INVALID,
221 : /* 0x9c */ FD_VALID, /* 0x9d */ FD_VALID, /* 0x9e */ FD_VALID, /* 0x9f */ FD_CHECK_ST,
222 : /* 0xa0 */ FD_INVALID, /* 0xa1 */ FD_INVALID, /* 0xa2 */ FD_INVALID, /* 0xa3 */ FD_INVALID,
223 : /* 0xa4 */ FD_VALID, /* 0xa5 */ FD_CHECK_JMP, /* 0xa6 */ FD_INVALID, /* 0xa7 */ FD_VALID,
224 : /* 0xa8 */ FD_INVALID, /* 0xa9 */ FD_INVALID, /* 0xaa */ FD_INVALID, /* 0xab */ FD_INVALID,
225 : /* 0xac */ FD_VALID, /* 0xad */ FD_CHECK_JMP, /* 0xae */ FD_INVALID, /* 0xaf */ FD_VALID,
226 : /* 0xb0 */ FD_INVALID, /* 0xb1 */ FD_INVALID, /* 0xb2 */ FD_INVALID, /* 0xb3 */ FD_INVALID,
227 : /* 0xb4 */ FD_VALID, /* 0xb5 */ FD_CHECK_JMP, /* 0xb6 */ FD_VALID, /* 0xb7 */ FD_VALID,
228 : /* 0xb8 */ FD_INVALID, /* 0xb9 */ FD_INVALID, /* 0xba */ FD_INVALID, /* 0xbb */ FD_INVALID,
229 : /* 0xbc */ FD_VALID, /* 0xbd */ FD_CHECK_JMP, /* 0xbe */ FD_VALID, /* 0xbf */ FD_VALID,
230 : /* 0xc0 */ FD_INVALID, /* 0xc1 */ FD_INVALID, /* 0xc2 */ FD_INVALID, /* 0xc3 */ FD_INVALID,
231 : /* 0xc4 */ FD_CHECK_SH32, /* 0xc5 */ FD_CHECK_JMP, /* 0xc6 */ FD_CHECK_DIV, /* 0xc7 */ FD_CHECK_SH64,
232 : /* 0xc8 */ FD_INVALID, /* 0xc9 */ FD_INVALID, /* 0xca */ FD_INVALID, /* 0xcb */ FD_INVALID,
233 : /* 0xcc */ FD_VALID, /* 0xcd */ FD_CHECK_JMP, /* 0xce */ FD_VALID, /* 0xcf */ FD_VALID,
234 : /* 0xd0 */ FD_INVALID, /* 0xd1 */ FD_INVALID, /* 0xd2 */ FD_INVALID, /* 0xd3 */ FD_INVALID,
235 : /* 0xd4 */ FD_INVALID, /* 0xd5 */ FD_CHECK_JMP, /* 0xd6 */ FD_CHECK_DIV, /* 0xd7 */ FD_INVALID,
236 : /* 0xd8 */ FD_INVALID, /* 0xd9 */ FD_INVALID, /* 0xda */ FD_INVALID, /* 0xdb */ FD_INVALID,
237 : /* 0xdc */ FD_CHECK_END, /* 0xdd */ FD_CHECK_JMP, /* 0xde */ FD_VALID, /* 0xdf */ FD_INVALID,
238 : /* 0xe0 */ FD_INVALID, /* 0xe1 */ FD_INVALID, /* 0xe2 */ FD_INVALID, /* 0xe3 */ FD_INVALID,
239 : /* 0xe4 */ FD_INVALID, /* 0xe5 */ FD_INVALID, /* 0xe6 */ FD_CHECK_DIV, /* 0xe7 */ FD_INVALID,
240 : /* 0xe8 */ FD_INVALID, /* 0xe9 */ FD_INVALID, /* 0xea */ FD_INVALID, /* 0xeb */ FD_INVALID,
241 : /* 0xec */ FD_INVALID, /* 0xed */ FD_INVALID, /* 0xee */ FD_VALID, /* 0xef */ FD_INVALID,
242 : /* 0xf0 */ FD_INVALID, /* 0xf1 */ FD_INVALID, /* 0xf2 */ FD_INVALID, /* 0xf3 */ FD_INVALID,
243 : /* 0xf4 */ FD_INVALID, /* 0xf5 */ FD_INVALID, /* 0xf6 */ FD_CHECK_DIV, /* 0xf7 */ FD_VALID,
244 : /* 0xf8 */ FD_INVALID, /* 0xf9 */ FD_INVALID, /* 0xfa */ FD_INVALID, /* 0xfb */ FD_INVALID,
245 : /* 0xfc */ FD_INVALID, /* 0xfd */ FD_INVALID, /* 0xfe */ FD_VALID, /* 0xff */ FD_INVALID,
246 330351 : };
247 :
248 : /* SIMD-0173: LDDW */
249 330351 : validation_map[ 0x18 ] = FD_VM_SBPF_ENABLE_LDDW(sbpf_version) ? FD_CHECK_LDQ : FD_INVALID;
250 330351 : validation_map[ 0xf7 ] = FD_VM_SBPF_ENABLE_LDDW(sbpf_version) ? FD_INVALID : FD_VALID; /* HOR64 */
251 :
252 : /* SIMD-0173: LE */
253 330351 : validation_map[ 0xd4 ] = FD_VM_SBPF_ENABLE_LE (sbpf_version) ? FD_CHECK_END : FD_INVALID;
254 :
255 : /* SIMD-0173: LDXW, STW, STXW */
256 330351 : validation_map[ 0x61 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_VALID;
257 330351 : validation_map[ 0x62 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
258 330351 : validation_map[ 0x63 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
259 330351 : validation_map[ 0x8c ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_VALID : FD_INVALID;
260 330351 : validation_map[ 0x87 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID; /* VALID because it's NEG64 */
261 330351 : validation_map[ 0x8f ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_INVALID;
262 :
263 : /* SIMD-0173: LDXH, STH, STXH */
264 330351 : validation_map[ 0x69 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_VALID;
265 330351 : validation_map[ 0x6a ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
266 330351 : validation_map[ 0x6b ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
267 330351 : validation_map[ 0x3c ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_VALID : FD_VALID;
268 330351 : validation_map[ 0x37 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_CHECK_DIV;
269 330351 : validation_map[ 0x3f ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID;
270 :
271 : /* SIMD-0173: LDXB, STB, STXB */
272 330351 : validation_map[ 0x71 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_VALID;
273 330351 : validation_map[ 0x72 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
274 330351 : validation_map[ 0x73 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
275 330351 : validation_map[ 0x2c ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_VALID : FD_VALID;
276 330351 : validation_map[ 0x27 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID;
277 330351 : validation_map[ 0x2f ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID;
278 :
279 : /* SIMD-0173: LDXDW, STDW, STXDW */
280 330351 : validation_map[ 0x79 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_VALID;
281 330351 : validation_map[ 0x7a ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
282 330351 : validation_map[ 0x7b ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
283 330351 : validation_map[ 0x9c ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_VALID : FD_VALID;
284 330351 : validation_map[ 0x97 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_CHECK_DIV;
285 330351 : validation_map[ 0x9f ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID;
286 :
287 : /* SIMD-0173: CALLX */
288 330351 : validation_map[ 0x8d ] = FD_VM_SBPF_CALLX_USES_SRC_REG(sbpf_version) ? FD_CHECK_CALL_REG : FD_CHECK_CALL_REG_DEPR;
289 :
290 : /* SIMD-0174: MUL, DIV, MOD */
291 330351 : validation_map[ 0x24 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_INVALID : FD_VALID;
292 330351 : validation_map[ 0x34 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_INVALID : FD_CHECK_DIV;
293 330351 : validation_map[ 0x94 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_INVALID : FD_CHECK_DIV;
294 : /* note: 0x?c, 0x?7, 0x?f should not be overwritten because they're now load/store ix */
295 :
296 : /* SIMD-0174: NEG */
297 330351 : validation_map[ 0x84 ] = FD_VM_SBPF_ENABLE_NEG (sbpf_version) ? FD_VALID : FD_INVALID;
298 : /* note: 0x87 should not be overwritten because it was NEG64 and it becomes STW */
299 :
300 : /* SIMD-0174: MUL, DIV, MOD */
301 330351 : validation_map[ 0x36 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID; /* UHMUL64 */
302 330351 : validation_map[ 0x3e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
303 330351 : validation_map[ 0x46 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* UDIV32 */
304 330351 : validation_map[ 0x4e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
305 330351 : validation_map[ 0x56 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* UDIV64 */
306 330351 : validation_map[ 0x5e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
307 330351 : validation_map[ 0x66 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* UREM32 */
308 330351 : validation_map[ 0x6e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
309 330351 : validation_map[ 0x76 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* UREM64 */
310 330351 : validation_map[ 0x7e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
311 330351 : validation_map[ 0x86 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID; /* LMUL32 */
312 330351 : validation_map[ 0x8e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
313 330351 : validation_map[ 0x96 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID; /* LMUL64 */
314 330351 : validation_map[ 0x9e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
315 330351 : validation_map[ 0xb6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID; /* SHMUL64 */
316 330351 : validation_map[ 0xbe ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
317 330351 : validation_map[ 0xc6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* SDIV32 */
318 330351 : validation_map[ 0xce ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
319 330351 : validation_map[ 0xd6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* SDIV64 */
320 330351 : validation_map[ 0xde ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
321 330351 : validation_map[ 0xe6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* SREM32 */
322 330351 : validation_map[ 0xee ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
323 330351 : validation_map[ 0xf6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* SREM64 */
324 330351 : validation_map[ 0xfe ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
325 :
326 : /* SIMD-0178: static syscalls */
327 330351 : validation_map[ 0x85 ] = FD_VM_SBPF_STATIC_SYSCALLS (sbpf_version) ? FD_CHECK_CALL_IMM : FD_VALID;
328 330351 : validation_map[ 0x95 ] = FD_VM_SBPF_STATIC_SYSCALLS (sbpf_version) ? FD_CHECK_SYSCALL : FD_VALID;
329 330351 : validation_map[ 0x9d ] = FD_VM_SBPF_STATIC_SYSCALLS (sbpf_version) ? FD_VALID : FD_INVALID;
330 :
331 : /* FIXME: These checks are not necessary assuming fd_vm_t is populated by metadata
332 : generated in fd_sbpf_elf_peek (which performs these checks). But there is no guarantee, and
333 : this non-guarantee is (rightfully) exploited by the fuzz harnesses.
334 : Agave doesn't perform these checks explicitly due to Rust's guarantees */
335 330351 : if( FD_UNLIKELY( vm->text_sz / 8UL != vm->text_cnt ||
336 330351 : (const uchar *)vm->text < vm->rodata ||
337 330351 : (ulong)vm->text > (ulong)vm->text + vm->text_sz || /* Overflow chk */
338 330351 : (const uchar *)vm->text + vm->text_sz > vm->rodata + vm->rodata_sz ) )
339 0 : return FD_VM_ERR_BAD_TEXT;
340 :
341 330351 : if( FD_UNLIKELY( !fd_ulong_is_aligned( vm->text_sz, 8UL ) ) ) /* https://github.com/solana-labs/rbpf/blob/v0.8.0/src/verifier.rs#L109 */
342 126 : return FD_VM_TEXT_SZ_UNALIGNED;
343 :
344 330225 : if ( FD_UNLIKELY( vm->text_cnt == 0UL ) ) /* https://github.com/solana-labs/rbpf/blob/v0.8.0/src/verifier.rs#L112 */
345 0 : return FD_VM_ERR_EMPTY;
346 :
347 : /* FIXME: CLEAN UP LONG / ULONG TYPE CONVERSION */
348 330225 : ulong const * text = vm->text;
349 330225 : ulong text_cnt = vm->text_cnt;
350 843265989 : for( ulong i=0UL; i<text_cnt; i++ ) {
351 843151917 : fd_sbpf_instr_t instr = fd_sbpf_instr( text[i] );
352 :
353 843151917 : uchar validation_code = validation_map[ instr.opcode.raw ];
354 843151917 : switch( validation_code ) {
355 :
356 669348696 : case FD_VALID: break;
357 :
358 : /* Store ops are special because they allow dreg==r10.
359 : We use a special validation_code, used later in the
360 : "Check registers" section.
361 : But there's nothing to do at this time. */
362 5845116 : case FD_CHECK_ST: break;
363 :
364 4558116 : case FD_CHECK_JMP_V0: {
365 4558116 : long jmp_dst = (long)i + (long)instr.offset + 1L;
366 4558116 : if( FD_UNLIKELY( (jmp_dst<0) | (jmp_dst>=(long)text_cnt) ) ) return FD_VM_ERR_JMP_OUT_OF_BOUNDS;
367 : //FIXME: this shouldn't be here?
368 4557975 : if( FD_UNLIKELY( fd_sbpf_instr( text[ jmp_dst ] ).opcode.raw==FD_SBPF_OP_ADDL_IMM ) ) return FD_VM_ERR_JMP_TO_ADDL_IMM;
369 4557894 : break;
370 4557975 : }
371 :
372 4557894 : case FD_CHECK_JMP_V3: {
373 0 : long jmp_dst = (long)i + (long)instr.offset + 1L;
374 0 : if( FD_UNLIKELY( (jmp_dst<0) | (jmp_dst>=(long)text_cnt) ) ) return FD_VM_ERR_JMP_OUT_OF_BOUNDS;
375 0 : break;
376 0 : }
377 :
378 5004 : case FD_CHECK_END: {
379 5004 : if( FD_UNLIKELY( !((instr.imm==16) | (instr.imm==32) | (instr.imm==64)) ) ) return FD_VM_ERR_INVALID_END_IMM;
380 1746 : break;
381 5004 : }
382 :
383 : /* https://github.com/solana-labs/rbpf/blob/b503a1867a9cfa13f93b4d99679a17fe219831de/src/verifier.rs#L244 */
384 1182246 : case FD_CHECK_LDQ: {
385 : /* https://github.com/solana-labs/rbpf/blob/b503a1867a9cfa13f93b4d99679a17fe219831de/src/verifier.rs#L131 */
386 1182246 : if( FD_UNLIKELY( (i+1UL)>=text_cnt ) ) return FD_VM_ERR_INCOMPLETE_LDQ;
387 :
388 : /* https://github.com/solana-labs/rbpf/blob/b503a1867a9cfa13f93b4d99679a17fe219831de/src/verifier.rs#L137-L139 */
389 1182240 : fd_sbpf_instr_t addl_imm = fd_sbpf_instr( text[ i+1UL ] );
390 1182240 : if( FD_UNLIKELY( addl_imm.opcode.raw!=FD_SBPF_OP_ADDL_IMM ) ) return FD_VM_ERR_LDQ_NO_ADDL_IMM;
391 :
392 : /* FIXME: SET A BIT MAP HERE OF ADDL_IMM TO DENOTE * AS FORBIDDEN
393 : BRANCH TARGETS OF CALL_REG?? */
394 :
395 1182234 : i++; /* Skip the addl imm */
396 1182234 : break;
397 1182240 : }
398 :
399 64454835 : case FD_CHECK_DIV: {
400 64454835 : if( FD_UNLIKELY( instr.imm==0 ) ) return FD_VM_ERR_SIGFPE;
401 64453587 : break;
402 64454835 : }
403 :
404 64453587 : case FD_CHECK_SH32: {
405 48316314 : if( FD_UNLIKELY( instr.imm>=32 ) ) return FD_VM_SH_OVERFLOW;
406 48311100 : break;
407 48316314 : }
408 :
409 49260945 : case FD_CHECK_SH64: {
410 49260945 : if( FD_UNLIKELY( instr.imm>=64 ) ) return FD_VM_SH_OVERFLOW;
411 49257015 : break;
412 49260945 : }
413 :
414 : /* https://github.com/solana-labs/rbpf/blob/v0.8.5/src/verifier.rs#L207 */
415 49257015 : case FD_CHECK_CALL_REG: {
416 924 : if( FD_UNLIKELY( instr.src_reg > 9 ) ) {
417 297 : return FD_VM_ERR_INVALID_REG;
418 297 : }
419 627 : break;
420 924 : }
421 108834 : case FD_CHECK_CALL_REG_DEPR: {
422 108834 : if( FD_UNLIKELY( instr.imm > 9 ) ) {
423 1449 : return FD_VM_ERR_INVALID_REG;
424 1449 : }
425 107385 : break;
426 108834 : }
427 :
428 : /* https://github.com/solana-labs/rbpf/blob/4ad935be/src/verifier.rs#L411-L418 */
429 107385 : case FD_CHECK_CALL_IMM: {
430 0 : ulong target_pc = (ulong)( fd_long_sat_add( (long)i, fd_long_sat_add( (long)(int)instr.imm, 1 ) ) );
431 0 : if( FD_UNLIKELY( target_pc>text_cnt || !fd_sbpf_calldests_test( vm->calldests, target_pc ) ) ) {
432 0 : return FD_VM_INVALID_FUNCTION;
433 0 : }
434 0 : break;
435 0 : }
436 :
437 : /* https://github.com/solana-labs/rbpf/blob/4ad935be/src/verifier.rs#L423-L428 */
438 0 : case FD_CHECK_SYSCALL: {
439 0 : uint imm = instr.imm;
440 : /* check out of bound */
441 0 : if( FD_UNLIKELY( imm==0 || imm >= FD_VM_SBPF_STATIC_SYSCALLS_LIST_SZ ) ) {
442 0 : return FD_VM_INVALID_SYSCALL;
443 0 : }
444 0 : uint syscall_key = FD_VM_SBPF_STATIC_SYSCALLS_LIST[ imm ];
445 : /* check active syscall */
446 0 : fd_sbpf_syscalls_t const * syscall = fd_sbpf_syscalls_query_const( vm->syscalls, syscall_key, NULL );
447 0 : if( FD_UNLIKELY( !syscall ) ) {
448 0 : return FD_VM_INVALID_SYSCALL;
449 0 : }
450 0 : break;
451 0 : }
452 :
453 70887 : case FD_INVALID: default: return FD_VM_ERR_INVALID_OPCODE;
454 843151917 : }
455 :
456 : /* Check registers
457 : https://github.com/solana-labs/rbpf/blob/v0.8.5/src/verifier.rs#L177 */
458 :
459 : /* Source register */
460 843065400 : if( FD_UNLIKELY( instr.src_reg>10 ) ) return FD_VM_ERR_INVALID_SRC_REG;
461 :
462 : /* Special R10 register allowed for ADD64_IMM */
463 843027318 : if( instr.dst_reg==10U
464 843027318 : && FD_VM_SBPF_DYNAMIC_STACK_FRAMES( sbpf_version )
465 843027318 : && instr.opcode.raw == 0x07
466 843027318 : && ( instr.imm % FD_VM_SBPF_DYNAMIC_STACK_FRAMES_ALIGN )==0 )
467 99 : continue;
468 :
469 : /* Destination register. */
470 843027219 : if( FD_UNLIKELY( instr.dst_reg==10U && validation_code != FD_CHECK_ST ) ) return FD_VM_ERR_INVALID_DST_REG;
471 842983125 : if( FD_UNLIKELY( instr.dst_reg > 10U ) ) return FD_VM_ERR_INVALID_DST_REG;
472 842983125 : }
473 :
474 114072 : return FD_VM_SUCCESS;
475 330225 : }
476 :
477 : FD_FN_CONST ulong
478 333126 : fd_vm_align( void ) {
479 333126 : return FD_VM_ALIGN;
480 333126 : }
481 :
482 : FD_FN_CONST ulong
483 333126 : fd_vm_footprint( void ) {
484 333126 : return FD_VM_FOOTPRINT;
485 333126 : }
486 :
487 : void *
488 336444 : fd_vm_new( void * shmem ) {
489 :
490 336444 : if( FD_UNLIKELY( !shmem ) ) {
491 0 : FD_LOG_WARNING(( "NULL shmem" ));
492 0 : return NULL;
493 0 : }
494 :
495 336444 : if( FD_UNLIKELY( !fd_ulong_is_aligned( (ulong)shmem, fd_vm_align() ) ) ) {
496 0 : FD_LOG_WARNING(( "misaligned shmem" ));
497 0 : return NULL;
498 0 : }
499 :
500 336444 : fd_vm_t * vm = (fd_vm_t *)shmem;
501 336444 : fd_memset( vm, 0, fd_vm_footprint() );
502 :
503 336444 : FD_COMPILER_MFENCE();
504 336444 : FD_VOLATILE( vm->magic ) = FD_VM_MAGIC;
505 336444 : FD_COMPILER_MFENCE();
506 :
507 336444 : return shmem;
508 336444 : }
509 :
510 : fd_vm_t *
511 336444 : fd_vm_join( void * shmem ) {
512 :
513 336444 : if( FD_UNLIKELY( !shmem ) ) {
514 0 : FD_LOG_WARNING(( "NULL shmem" ));
515 0 : return NULL;
516 0 : }
517 :
518 336444 : if( FD_UNLIKELY( !fd_ulong_is_aligned( (ulong)shmem, fd_vm_align() ) ) ) {
519 0 : FD_LOG_WARNING(( "misaligned shmem" ));
520 0 : return NULL;
521 0 : }
522 :
523 336444 : fd_vm_t * vm = (fd_vm_t *)shmem;
524 :
525 336444 : if( FD_UNLIKELY( vm->magic!=FD_VM_MAGIC ) ) {
526 0 : FD_LOG_WARNING(( "bad magic" ));
527 0 : return NULL;
528 0 : }
529 :
530 336444 : return vm;
531 336444 : }
532 :
533 : void *
534 9 : fd_vm_leave( fd_vm_t * vm ) {
535 :
536 9 : if( FD_UNLIKELY( !vm ) ) {
537 0 : FD_LOG_WARNING(( "NULL vm" ));
538 0 : return NULL;
539 0 : }
540 :
541 9 : return (void *)vm;
542 9 : }
543 :
544 : void *
545 9 : fd_vm_delete( void * shmem ) {
546 :
547 9 : if( FD_UNLIKELY( !shmem ) ) {
548 0 : FD_LOG_WARNING(( "NULL shmem" ));
549 0 : return NULL;
550 0 : }
551 :
552 9 : if( FD_UNLIKELY( !fd_ulong_is_aligned( (ulong)shmem, fd_vm_align() ) ) ) {
553 0 : FD_LOG_WARNING(( "misaligned shmem" ));
554 0 : return NULL;
555 0 : }
556 :
557 9 : fd_vm_t * vm = (fd_vm_t *)shmem;
558 :
559 9 : if( FD_UNLIKELY( vm->magic!=FD_VM_MAGIC ) ) {
560 0 : FD_LOG_WARNING(( "bad magic" ));
561 0 : return NULL;
562 0 : }
563 :
564 9 : FD_COMPILER_MFENCE();
565 9 : FD_VOLATILE( vm->magic ) = 0UL;
566 9 : FD_COMPILER_MFENCE();
567 :
568 9 : return (void *)vm;
569 9 : }
570 :
571 : fd_vm_t *
572 : fd_vm_init(
573 : fd_vm_t * vm,
574 : fd_exec_instr_ctx_t *instr_ctx,
575 : ulong heap_max,
576 : ulong entry_cu,
577 : uchar const * rodata,
578 : ulong rodata_sz,
579 : ulong const * text,
580 : ulong text_cnt,
581 : ulong text_off,
582 : ulong text_sz,
583 : ulong entry_pc,
584 : ulong * calldests,
585 : ulong sbpf_version,
586 : fd_sbpf_syscalls_t * syscalls,
587 : fd_vm_trace_t * trace,
588 : fd_sha256_t * sha,
589 : fd_vm_input_region_t * mem_regions,
590 : uint mem_regions_cnt,
591 : fd_vm_acc_region_meta_t * acc_region_metas,
592 : uchar is_deprecated,
593 344097 : int direct_mapping ) {
594 :
595 344097 : if ( FD_UNLIKELY( vm == NULL ) ) {
596 0 : FD_LOG_WARNING(( "NULL vm" ));
597 0 : return NULL;
598 0 : }
599 :
600 344097 : if ( FD_UNLIKELY( vm->magic != FD_VM_MAGIC ) ) {
601 0 : FD_LOG_WARNING(( "bad magic" ));
602 0 : return NULL;
603 0 : }
604 :
605 344097 : if ( FD_UNLIKELY( instr_ctx == NULL ) ) {
606 0 : FD_LOG_WARNING(( "NULL instr_ctx" ));
607 0 : return NULL;
608 0 : }
609 :
610 344097 : if ( FD_UNLIKELY( heap_max > FD_VM_HEAP_MAX ) ) {
611 0 : FD_LOG_WARNING(( "heap_max > FD_VM_HEAP_MAX" ));
612 0 : return NULL;
613 0 : }
614 :
615 : // Set the vm fields
616 344097 : vm->instr_ctx = instr_ctx;
617 344097 : vm->heap_max = heap_max;
618 344097 : vm->entry_cu = entry_cu;
619 344097 : vm->rodata = rodata;
620 344097 : vm->rodata_sz = rodata_sz;
621 344097 : vm->text = text;
622 344097 : vm->text_cnt = text_cnt;
623 344097 : vm->text_off = text_off;
624 344097 : vm->text_sz = text_sz;
625 344097 : vm->entry_pc = entry_pc;
626 344097 : vm->calldests = calldests;
627 344097 : vm->sbpf_version = sbpf_version;
628 344097 : vm->syscalls = syscalls;
629 344097 : vm->trace = trace;
630 344097 : vm->sha = sha;
631 344097 : vm->input_mem_regions = mem_regions;
632 344097 : vm->input_mem_regions_cnt = mem_regions_cnt;
633 344097 : vm->acc_region_metas = acc_region_metas;
634 344097 : vm->is_deprecated = is_deprecated;
635 344097 : vm->direct_mapping = direct_mapping;
636 344097 : vm->stack_frame_size = FD_VM_STACK_FRAME_SZ + ( direct_mapping ? 0UL : FD_VM_STACK_GUARD_SZ );
637 344097 : vm->segv_store_vaddr = ULONG_MAX;
638 :
639 : /* Unpack the configuration */
640 344097 : int err = fd_vm_setup_state_for_execution( vm );
641 344097 : if( FD_UNLIKELY( err != FD_VM_SUCCESS ) ) {
642 0 : return NULL;
643 0 : }
644 :
645 344097 : return vm;
646 344097 : }
647 :
648 : int
649 344097 : fd_vm_setup_state_for_execution( fd_vm_t * vm ) {
650 :
651 344097 : if ( FD_UNLIKELY( !vm ) ) {
652 0 : FD_LOG_WARNING(( "NULL vm" ));
653 0 : return FD_VM_ERR_INVAL;
654 0 : }
655 :
656 : /* Unpack input and rodata */
657 344097 : fd_vm_mem_cfg( vm );
658 :
659 : /* Initialize registers */
660 : /* FIXME: Zero out shadow, stack and heap here? */
661 344097 : fd_memset( vm->reg, 0, FD_VM_REG_MAX * sizeof(ulong) );
662 344097 : vm->reg[ 1] = FD_VM_MEM_MAP_INPUT_REGION_START;
663 : /* https://github.com/solana-labs/rbpf/blob/4ad935be45e5663be23b30cfc750b1ae1ad03c44/src/vm.rs#L326-L333 */
664 344097 : vm->reg[10] = FD_VM_MEM_MAP_STACK_REGION_START +
665 344097 : ( FD_VM_SBPF_DYNAMIC_STACK_FRAMES( vm->sbpf_version ) ? FD_VM_STACK_MAX : FD_VM_STACK_FRAME_SZ );
666 : /* Note: Agave uses r11 as pc, we don't */
667 :
668 : /* Set execution state */
669 344097 : vm->pc = vm->entry_pc;
670 344097 : vm->ic = 0UL;
671 344097 : vm->cu = vm->entry_cu;
672 344097 : vm->frame_cnt = 0UL;
673 :
674 344097 : vm->heap_sz = 0UL;
675 :
676 : /* Do NOT reset logs */
677 :
678 344097 : return FD_VM_SUCCESS;
679 344097 : }
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