Line data Source code
1 : #include "fd_vm_private.h"
2 : #include "../../ballet/sbpf/fd_sbpf_instr.h"
3 : #include "../../ballet/sbpf/fd_sbpf_opcodes.h"
4 :
5 : /* fd_vm_syscall_strerror() returns the error message corresponding to err,
6 : intended to be logged by log_collector, or an empty string if the error code
7 : should be omitted in logs for whatever reason. Omitted examples are success,
8 : panic (logged in place)...
9 : See also fd_log_collector_program_failure(). */
10 : char const *
11 0 : fd_vm_syscall_strerror( int err ) {
12 :
13 0 : switch( err ) {
14 :
15 0 : case FD_VM_SYSCALL_ERR_INVALID_STRING: return "invalid utf-8 sequence"; // truncated
16 0 : case FD_VM_SYSCALL_ERR_ABORT: return "SBF program panicked";
17 0 : case FD_VM_SYSCALL_ERR_PANIC: return "SBF program Panicked in..."; // truncated
18 0 : case FD_VM_SYSCALL_ERR_INVOKE_CONTEXT_BORROW_FAILED: return "Cannot borrow invoke context";
19 0 : case FD_VM_SYSCALL_ERR_MALFORMED_SIGNER_SEED: return "Malformed signer seed"; // truncated
20 0 : case FD_VM_SYSCALL_ERR_BAD_SEEDS: return "Could not create program address with signer seeds"; // truncated
21 0 : case FD_VM_SYSCALL_ERR_PROGRAM_NOT_SUPPORTED: return "Program not supported by inner instructions"; // truncated
22 0 : case FD_VM_SYSCALL_ERR_UNALIGNED_POINTER: return "Unaligned pointer";
23 0 : case FD_VM_SYSCALL_ERR_TOO_MANY_SIGNERS: return "Too many signers";
24 0 : case FD_VM_SYSCALL_ERR_INSTRUCTION_TOO_LARGE: return "Instruction passed to inner instruction is too large"; // truncated
25 0 : case FD_VM_SYSCALL_ERR_TOO_MANY_ACCOUNTS: return "Too many accounts passed to inner instruction";
26 0 : case FD_VM_SYSCALL_ERR_COPY_OVERLAPPING: return "Overlapping copy";
27 0 : case FD_VM_SYSCALL_ERR_RETURN_DATA_TOO_LARGE: return "Return data too large"; // truncated
28 0 : case FD_VM_SYSCALL_ERR_TOO_MANY_SLICES: return "Hashing too many sequences";
29 0 : case FD_VM_SYSCALL_ERR_INVALID_LENGTH: return "InvalidLength";
30 0 : case FD_VM_SYSCALL_ERR_MAX_INSTRUCTION_DATA_LEN_EXCEEDED: return "Invoked an instruction with data that is too large"; // truncated
31 0 : case FD_VM_SYSCALL_ERR_MAX_INSTRUCTION_ACCOUNTS_EXCEEDED: return "Invoked an instruction with too many accounts"; // truncated
32 0 : case FD_VM_SYSCALL_ERR_MAX_INSTRUCTION_ACCOUNT_INFOS_EXCEEDED: return "Invoked an instruction with too many account info's"; // truncated
33 0 : case FD_VM_SYSCALL_ERR_INVALID_ATTRIBUTE: return "InvalidAttribute";
34 0 : case FD_VM_SYSCALL_ERR_INVALID_POINTER: return "Invalid pointer";
35 0 : case FD_VM_SYSCALL_ERR_ARITHMETIC_OVERFLOW: return "Arithmetic overflow";
36 :
37 0 : case FD_VM_SYSCALL_ERR_INSTR_ERR: return "Instruction error";
38 0 : case FD_VM_SYSCALL_ERR_INVALID_PDA: return "Invalid PDA";
39 0 : case FD_VM_SYSCALL_ERR_COMPUTE_BUDGET_EXCEEDED: return "Compute budget exceeded";
40 0 : case FD_VM_SYSCALL_ERR_SEGFAULT: return "Segmentation fault";
41 0 : case FD_VM_SYSCALL_ERR_OUTSIDE_RUNTIME: return "Syscall executed outside runtime";
42 :
43 :
44 0 : case FD_VM_SYSCALL_ERR_POSEIDON_INVALID_PARAMS: return "Invalid parameters.";
45 0 : case FD_VM_SYSCALL_ERR_POSEIDON_INVALID_ENDIANNESS: return "Invalid endianness.";
46 :
47 0 : default: break;
48 0 : }
49 :
50 0 : return "";
51 0 : }
52 :
53 : /* fd_vm_ebpf_strerror() returns the error message corresponding to err,
54 : intended to be logged by log_collector, or an empty string if the error code
55 : should be omitted in logs for whatever reason.
56 : See also fd_log_collector_program_failure(). */
57 : char const *
58 0 : fd_vm_ebpf_strerror( int err ) {
59 :
60 0 : switch( err ) {
61 :
62 0 : case FD_VM_ERR_EBPF_ELF_ERROR: return "ELF error"; // truncated
63 0 : case FD_VM_ERR_EBPF_FUNCTION_ALREADY_REGISTERED: return "function was already registered"; // truncated
64 0 : case FD_VM_ERR_EBPF_CALL_DEPTH_EXCEEDED: return "exceeded max BPF to BPF call depth";
65 0 : case FD_VM_ERR_EBPF_EXIT_ROOT_CALL_FRAME: return "attempted to exit root call frame";
66 0 : case FD_VM_ERR_EBPF_DIVIDE_BY_ZERO: return "divide by zero at BPF instruction";
67 0 : case FD_VM_ERR_EBPF_DIVIDE_OVERFLOW: return "division overflow at BPF instruction";
68 0 : case FD_VM_ERR_EBPF_EXECUTION_OVERRUN: return "attempted to execute past the end of the text segment at BPF instruction";
69 0 : case FD_VM_ERR_EBPF_CALL_OUTSIDE_TEXT_SEGMENT: return "callx attempted to call outside of the text segment";
70 0 : case FD_VM_ERR_EBPF_EXCEEDED_MAX_INSTRUCTIONS: return "exceeded CUs meter at BPF instruction";
71 0 : case FD_VM_ERR_EBPF_JIT_NOT_COMPILED: return "program has not been JIT-compiled";
72 0 : case FD_VM_ERR_EBPF_INVALID_VIRTUAL_ADDRESS: return "invalid virtual address"; // truncated
73 0 : case FD_VM_ERR_EBPF_INVALID_MEMORY_REGION: return "Invalid memory region at index"; // truncated
74 0 : case FD_VM_ERR_EBPF_ACCESS_VIOLATION: return "Access violation"; // truncated
75 0 : case FD_VM_ERR_EBPF_STACK_ACCESS_VIOLATION: return "Access violation in stack frame"; // truncated
76 0 : case FD_VM_ERR_EBPF_INVALID_INSTRUCTION: return "invalid BPF instruction";
77 0 : case FD_VM_ERR_EBPF_UNSUPPORTED_INSTRUCTION: return "unsupported BPF instruction";
78 0 : case FD_VM_ERR_EBPF_EXHAUSTED_TEXT_SEGMENT: return "Compilation exhausted text segment at BPF instruction"; // truncated
79 0 : case FD_VM_ERR_EBPF_LIBC_INVOCATION_FAILED: return "Libc calling returned error code"; // truncated
80 0 : case FD_VM_ERR_EBPF_VERIFIER_ERROR: return "Verifier error"; // truncated
81 0 : case FD_VM_ERR_EBPF_SYSCALL_ERROR: return ""; // handled explicitly via fd_vm_syscall_strerror()
82 :
83 0 : default: break;
84 0 : }
85 :
86 0 : return "";
87 0 : }
88 :
89 : /* fd_vm_strerror() returns the error message corresponding to err, used internally
90 : for system logs, NOT for log_collector / transaction logs. */
91 : char const *
92 42 : fd_vm_strerror( int err ) {
93 :
94 42 : switch( err ) {
95 :
96 : /* "Standard" Firedancer error codes */
97 :
98 3 : case FD_VM_SUCCESS: return "SUCCESS success";
99 3 : case FD_VM_ERR_INVAL: return "INVAL invalid request";
100 3 : case FD_VM_ERR_UNSUP: return "UNSUP unsupported request";
101 3 : case FD_VM_ERR_FULL: return "FULL storage full";
102 3 : case FD_VM_ERR_EMPTY: return "EMPTY nothing to do";
103 3 : case FD_VM_ERR_IO: return "IO input-output error";
104 :
105 : /* VM exec error codes */
106 :
107 0 : case FD_VM_ERR_SIGFPE: return "SIGFPE division by zero";
108 :
109 : /* VM validate error codes */
110 :
111 3 : case FD_VM_ERR_INVALID_OPCODE: return "INVALID_OPCODE detected an invalid opcode";
112 3 : case FD_VM_ERR_INVALID_SRC_REG: return "INVALID_SRC_REG detected an invalid source register";
113 3 : case FD_VM_ERR_INVALID_DST_REG: return "INVALID_DST_REG detected an invalid destination register";
114 3 : case FD_VM_ERR_JMP_OUT_OF_BOUNDS: return "JMP_OUT_OF_BOUNDS detected an out of bounds jump";
115 3 : case FD_VM_ERR_JMP_TO_ADDL_IMM: return "JMP_TO_ADDL_IMM detected a jump to an addl imm";
116 3 : case FD_VM_ERR_INVALID_END_IMM: return "INVALID_END_IMM detected an invalid immediate for an endianness conversion instruction";
117 3 : case FD_VM_ERR_INCOMPLETE_LDQ: return "INCOMPLETE_LDQ detected an incomplete ldq at program end";
118 3 : case FD_VM_ERR_LDQ_NO_ADDL_IMM: return "LDQ_NO_ADDL_IMM detected a ldq without an addl imm following it";
119 0 : case FD_VM_ERR_INVALID_REG: return "INVALID_REG detected an invalid register number in a callx instruction";
120 0 : case FD_VM_ERR_BAD_TEXT: return "BAD_TEXT detected a bad text section";
121 0 : case FD_VM_SH_OVERFLOW: return "SH_OVERFLOW detected a shift overflow in an instruction";
122 0 : case FD_VM_TEXT_SZ_UNALIGNED: return "TEXT_SZ_UNALIGNED detected an unaligned text section size (not a multiple of 8)";
123 :
124 0 : default: break;
125 42 : }
126 :
127 0 : return "UNKNOWN probably not a FD_VM_ERR code";
128 42 : }
129 :
130 : /* FIXME: add a pedantic version of this validation that does things
131 : like:
132 : - only 0 imms when the instruction does not use an imm
133 : - same as above but for src/dst reg, offset */
134 : /* FIXME: HANDLING OF LDQ ON NEWER SBPF VERSUS OLDER SBPF (AND WITH CALL
135 : REG) */
136 : /* FIXME: LINK TO SOLANA CODE VALIDATE AND DOUBLE CHECK THIS BEHAVES
137 : IDENTICALLY! */
138 :
139 : int
140 8994 : fd_vm_validate( fd_vm_t const * vm ) {
141 :
142 8994 : ulong sbpf_version = vm->sbpf_version;
143 :
144 : /* A mapping of all the possible 1-byte sBPF opcodes to their
145 : validation criteria. */
146 :
147 645194469 : # define FD_VALID ((uchar)0) /* Valid opcode */
148 261861 : # define FD_CHECK_JMP ((uchar)1) /* Validation should check that the instruction is a valid jump */
149 13749 : # define FD_CHECK_END ((uchar)2) /* Validation should check that the instruction is a valid endianness conversion */
150 246078 : # define FD_CHECK_ST ((uchar)3) /* Validation should check that the instruction is a valid store */
151 15000 : # define FD_CHECK_LDQ ((uchar)4) /* Validation should check that the instruction is a valid load-quad */
152 64568454 : # define FD_CHECK_DIV ((uchar)5) /* Validation should check that the instruction is a valid division by immediate */
153 48335400 : # define FD_CHECK_SH32 ((uchar)6) /* Validation should check that the immediate is a valid 32-bit shift exponent */
154 48365871 : # define FD_CHECK_SH64 ((uchar)7) /* Validation should check that the immediate is a valid 64-bit shift exponent */
155 1877889 : # define FD_INVALID ((uchar)8) /* The opcode is invalid */
156 13350 : # define FD_CHECK_CALL_REG_SRC ((uchar)9) /* Validation should check that callx has valid register number in src */
157 8994 : # define FD_CHECK_CALL_REG_DST ((uchar)13) /* Validation should check that callx has a valid register number in dst */
158 17088 : # define FD_CHECK_CALL_REG_IMM ((uchar)10) /* Validation should check that callx has a valid register number in imm */
159 :
160 8994 : uchar validation_map[ 256 ] = {
161 8994 : /* 0x00 */ FD_INVALID, /* 0x01 */ FD_INVALID, /* 0x02 */ FD_INVALID, /* 0x03 */ FD_INVALID,
162 8994 : /* 0x04 */ FD_VALID, /* 0x05 */ FD_CHECK_JMP, /* 0x06 */ FD_INVALID, /* 0x07 */ FD_VALID,
163 8994 : /* 0x08 */ FD_INVALID, /* 0x09 */ FD_INVALID, /* 0x0a */ FD_INVALID, /* 0x0b */ FD_INVALID,
164 8994 : /* 0x0c */ FD_VALID, /* 0x0d */ FD_INVALID, /* 0x0e */ FD_INVALID, /* 0x0f */ FD_VALID,
165 8994 : /* 0x10 */ FD_INVALID, /* 0x11 */ FD_INVALID, /* 0x12 */ FD_INVALID, /* 0x13 */ FD_INVALID,
166 8994 : /* 0x14 */ FD_VALID, /* 0x15 */ FD_CHECK_JMP, /* 0x16 */ FD_INVALID, /* 0x17 */ FD_VALID,
167 8994 : /* 0x18 */ FD_INVALID, /* 0x19 */ FD_INVALID, /* 0x1a */ FD_INVALID, /* 0x1b */ FD_INVALID,
168 8994 : /* 0x1c */ FD_VALID, /* 0x1d */ FD_CHECK_JMP, /* 0x1e */ FD_INVALID, /* 0x1f */ FD_VALID,
169 8994 : /* 0x20 */ FD_INVALID, /* 0x21 */ FD_INVALID, /* 0x22 */ FD_INVALID, /* 0x23 */ FD_INVALID,
170 8994 : /* 0x24 */ FD_INVALID, /* 0x25 */ FD_CHECK_JMP, /* 0x26 */ FD_INVALID, /* 0x27 */ FD_CHECK_ST,
171 8994 : /* 0x28 */ FD_INVALID, /* 0x29 */ FD_INVALID, /* 0x2a */ FD_INVALID, /* 0x2b */ FD_INVALID,
172 8994 : /* 0x2c */ FD_VALID, /* 0x2d */ FD_CHECK_JMP, /* 0x2e */ FD_INVALID, /* 0x2f */ FD_CHECK_ST,
173 8994 : /* 0x30 */ FD_INVALID, /* 0x31 */ FD_INVALID, /* 0x32 */ FD_INVALID, /* 0x33 */ FD_INVALID,
174 8994 : /* 0x34 */ FD_INVALID, /* 0x35 */ FD_CHECK_JMP, /* 0x36 */ FD_VALID, /* 0x37 */ FD_CHECK_ST,
175 8994 : /* 0x38 */ FD_INVALID, /* 0x39 */ FD_INVALID, /* 0x3a */ FD_INVALID, /* 0x3b */ FD_INVALID,
176 8994 : /* 0x3c */ FD_VALID, /* 0x3d */ FD_CHECK_JMP, /* 0x3e */ FD_VALID, /* 0x3f */ FD_CHECK_ST,
177 8994 : /* 0x40 */ FD_INVALID, /* 0x41 */ FD_INVALID, /* 0x42 */ FD_INVALID, /* 0x43 */ FD_INVALID,
178 8994 : /* 0x44 */ FD_VALID, /* 0x45 */ FD_CHECK_JMP, /* 0x46 */ FD_CHECK_DIV, /* 0x47 */ FD_VALID,
179 8994 : /* 0x48 */ FD_INVALID, /* 0x49 */ FD_INVALID, /* 0x4a */ FD_INVALID, /* 0x4b */ FD_INVALID,
180 8994 : /* 0x4c */ FD_VALID, /* 0x4d */ FD_CHECK_JMP, /* 0x4e */ FD_VALID, /* 0x4f */ FD_VALID,
181 8994 : /* 0x50 */ FD_INVALID, /* 0x51 */ FD_INVALID, /* 0x52 */ FD_INVALID, /* 0x53 */ FD_INVALID,
182 8994 : /* 0x54 */ FD_VALID, /* 0x55 */ FD_CHECK_JMP, /* 0x56 */ FD_CHECK_DIV, /* 0x57 */ FD_VALID,
183 8994 : /* 0x58 */ FD_INVALID, /* 0x59 */ FD_INVALID, /* 0x5a */ FD_INVALID, /* 0x5b */ FD_INVALID,
184 8994 : /* 0x5c */ FD_VALID, /* 0x5d */ FD_CHECK_JMP, /* 0x5e */ FD_VALID, /* 0x5f */ FD_VALID,
185 8994 : /* 0x60 */ FD_INVALID, /* 0x61 */ FD_INVALID, /* 0x62 */ FD_INVALID, /* 0x63 */ FD_INVALID,
186 8994 : /* 0x64 */ FD_CHECK_SH32, /* 0x65 */ FD_CHECK_JMP, /* 0x66 */ FD_CHECK_DIV, /* 0x67 */ FD_CHECK_SH64,
187 8994 : /* 0x68 */ FD_INVALID, /* 0x69 */ FD_INVALID, /* 0x6a */ FD_INVALID, /* 0x6b */ FD_INVALID,
188 8994 : /* 0x6c */ FD_VALID, /* 0x6d */ FD_CHECK_JMP, /* 0x6e */ FD_VALID, /* 0x6f */ FD_VALID,
189 8994 : /* 0x70 */ FD_INVALID, /* 0x71 */ FD_INVALID, /* 0x72 */ FD_INVALID, /* 0x73 */ FD_INVALID,
190 8994 : /* 0x74 */ FD_CHECK_SH32, /* 0x75 */ FD_CHECK_JMP, /* 0x76 */ FD_CHECK_DIV, /* 0x77 */ FD_CHECK_SH64,
191 8994 : /* 0x78 */ FD_INVALID, /* 0x79 */ FD_INVALID, /* 0x7a */ FD_INVALID, /* 0x7b */ FD_INVALID,
192 8994 : /* 0x7c */ FD_VALID, /* 0x7d */ FD_CHECK_JMP, /* 0x7e */ FD_VALID, /* 0x7f */ FD_VALID,
193 8994 : /* 0x80 */ FD_INVALID, /* 0x81 */ FD_INVALID, /* 0x82 */ FD_INVALID, /* 0x83 */ FD_INVALID,
194 8994 : /* 0x84 */ FD_INVALID, /* 0x85 */ FD_VALID, /* 0x86 */ FD_VALID, /* 0x87 */ FD_CHECK_ST,
195 8994 : /* 0x88 */ FD_INVALID, /* 0x89 */ FD_INVALID, /* 0x8a */ FD_INVALID, /* 0x8b */ FD_INVALID,
196 8994 : /* 0x8c */ FD_VALID, /* 0x8d */ FD_CHECK_CALL_REG_SRC,/*0x8e*/FD_VALID, /* 0x8f */ FD_CHECK_ST,
197 8994 : /* 0x90 */ FD_INVALID, /* 0x91 */ FD_INVALID, /* 0x92 */ FD_INVALID, /* 0x93 */ FD_INVALID,
198 8994 : /* 0x94 */ FD_INVALID, /* 0x95 */ FD_VALID, /* 0x96 */ FD_VALID, /* 0x97 */ FD_CHECK_ST,
199 8994 : /* 0x98 */ FD_INVALID, /* 0x99 */ FD_INVALID, /* 0x9a */ FD_INVALID, /* 0x9b */ FD_INVALID,
200 8994 : /* 0x9c */ FD_VALID, /* 0x9d */ FD_INVALID, /* 0x9e */ FD_VALID, /* 0x9f */ FD_CHECK_ST,
201 8994 : /* 0xa0 */ FD_INVALID, /* 0xa1 */ FD_INVALID, /* 0xa2 */ FD_INVALID, /* 0xa3 */ FD_INVALID,
202 8994 : /* 0xa4 */ FD_VALID, /* 0xa5 */ FD_CHECK_JMP, /* 0xa6 */ FD_INVALID, /* 0xa7 */ FD_VALID,
203 8994 : /* 0xa8 */ FD_INVALID, /* 0xa9 */ FD_INVALID, /* 0xaa */ FD_INVALID, /* 0xab */ FD_INVALID,
204 8994 : /* 0xac */ FD_VALID, /* 0xad */ FD_CHECK_JMP, /* 0xae */ FD_INVALID, /* 0xaf */ FD_VALID,
205 8994 : /* 0xb0 */ FD_INVALID, /* 0xb1 */ FD_INVALID, /* 0xb2 */ FD_INVALID, /* 0xb3 */ FD_INVALID,
206 8994 : /* 0xb4 */ FD_VALID, /* 0xb5 */ FD_CHECK_JMP, /* 0xb6 */ FD_VALID, /* 0xb7 */ FD_VALID,
207 8994 : /* 0xb8 */ FD_INVALID, /* 0xb9 */ FD_INVALID, /* 0xba */ FD_INVALID, /* 0xbb */ FD_INVALID,
208 8994 : /* 0xbc */ FD_VALID, /* 0xbd */ FD_CHECK_JMP, /* 0xbe */ FD_VALID, /* 0xbf */ FD_VALID,
209 8994 : /* 0xc0 */ FD_INVALID, /* 0xc1 */ FD_INVALID, /* 0xc2 */ FD_INVALID, /* 0xc3 */ FD_INVALID,
210 8994 : /* 0xc4 */ FD_CHECK_SH32, /* 0xc5 */ FD_CHECK_JMP, /* 0xc6 */ FD_CHECK_DIV, /* 0xc7 */ FD_CHECK_SH64,
211 8994 : /* 0xc8 */ FD_INVALID, /* 0xc9 */ FD_INVALID, /* 0xca */ FD_INVALID, /* 0xcb */ FD_INVALID,
212 8994 : /* 0xcc */ FD_VALID, /* 0xcd */ FD_CHECK_JMP, /* 0xce */ FD_VALID, /* 0xcf */ FD_VALID,
213 8994 : /* 0xd0 */ FD_INVALID, /* 0xd1 */ FD_INVALID, /* 0xd2 */ FD_INVALID, /* 0xd3 */ FD_INVALID,
214 8994 : /* 0xd4 */ FD_INVALID, /* 0xd5 */ FD_CHECK_JMP, /* 0xd6 */ FD_CHECK_DIV, /* 0xd7 */ FD_INVALID,
215 8994 : /* 0xd8 */ FD_INVALID, /* 0xd9 */ FD_INVALID, /* 0xda */ FD_INVALID, /* 0xdb */ FD_INVALID,
216 8994 : /* 0xdc */ FD_CHECK_END, /* 0xdd */ FD_CHECK_JMP, /* 0xde */ FD_VALID, /* 0xdf */ FD_INVALID,
217 8994 : /* 0xe0 */ FD_INVALID, /* 0xe1 */ FD_INVALID, /* 0xe2 */ FD_INVALID, /* 0xe3 */ FD_INVALID,
218 8994 : /* 0xe4 */ FD_INVALID, /* 0xe5 */ FD_INVALID, /* 0xe6 */ FD_CHECK_DIV, /* 0xe7 */ FD_INVALID,
219 8994 : /* 0xe8 */ FD_INVALID, /* 0xe9 */ FD_INVALID, /* 0xea */ FD_INVALID, /* 0xeb */ FD_INVALID,
220 8994 : /* 0xec */ FD_INVALID, /* 0xed */ FD_INVALID, /* 0xee */ FD_VALID, /* 0xef */ FD_INVALID,
221 8994 : /* 0xf0 */ FD_INVALID, /* 0xf1 */ FD_INVALID, /* 0xf2 */ FD_INVALID, /* 0xf3 */ FD_INVALID,
222 8994 : /* 0xf4 */ FD_INVALID, /* 0xf5 */ FD_INVALID, /* 0xf6 */ FD_CHECK_DIV, /* 0xf7 */ FD_VALID,
223 8994 : /* 0xf8 */ FD_INVALID, /* 0xf9 */ FD_INVALID, /* 0xfa */ FD_INVALID, /* 0xfb */ FD_INVALID,
224 8994 : /* 0xfc */ FD_INVALID, /* 0xfd */ FD_INVALID, /* 0xfe */ FD_VALID, /* 0xff */ FD_INVALID,
225 8994 : };
226 :
227 : /* SIMD-0173: LDDW
228 : https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/verifier.rs#L232-L235 */
229 8994 : validation_map[ 0x18 ] = !FD_VM_SBPF_DISABLE_LDDW(sbpf_version) ? FD_CHECK_LDQ : FD_INVALID;
230 : /* HOR64 https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/verifier.rs#L325 */
231 8994 : validation_map[ 0xf7 ] = FD_VM_SBPF_DISABLE_LDDW(sbpf_version) ? FD_VALID : FD_INVALID;
232 :
233 : /* SIMD-0173: LE
234 : https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/verifier.rs#L285 */
235 8994 : validation_map[ 0xd4 ] = !FD_VM_SBPF_DISABLE_LE(sbpf_version) ? FD_CHECK_END : FD_INVALID;
236 :
237 : /* SIMD-0173: LDXW, STW, STXW */
238 8994 : validation_map[ 0x61 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_VALID;
239 8994 : validation_map[ 0x62 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
240 8994 : validation_map[ 0x63 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
241 8994 : validation_map[ 0x8c ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_VALID : FD_INVALID;
242 8994 : validation_map[ 0x87 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID; /* VALID because it's NEG64 */
243 8994 : validation_map[ 0x8f ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_INVALID;
244 :
245 : /* SIMD-0173: LDXH, STH, STXH */
246 8994 : validation_map[ 0x69 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_VALID;
247 8994 : validation_map[ 0x6a ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
248 8994 : validation_map[ 0x6b ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
249 8994 : validation_map[ 0x3c ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_VALID : FD_VALID;
250 8994 : validation_map[ 0x37 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_CHECK_DIV;
251 8994 : validation_map[ 0x3f ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID;
252 :
253 : /* SIMD-0173: LDXB, STB, STXB */
254 8994 : validation_map[ 0x71 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_VALID;
255 8994 : validation_map[ 0x72 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
256 8994 : validation_map[ 0x73 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
257 8994 : validation_map[ 0x2c ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_VALID : FD_VALID;
258 8994 : validation_map[ 0x27 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID;
259 8994 : validation_map[ 0x2f ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID;
260 :
261 : /* SIMD-0173: LDXDW, STDW, STXDW */
262 8994 : validation_map[ 0x79 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_VALID;
263 8994 : validation_map[ 0x7a ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
264 8994 : validation_map[ 0x7b ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_INVALID : FD_CHECK_ST;
265 8994 : validation_map[ 0x9c ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_VALID : FD_VALID;
266 8994 : validation_map[ 0x97 ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_CHECK_DIV;
267 8994 : validation_map[ 0x9f ] = FD_VM_SBPF_MOVE_MEMORY_IX_CLASSES(sbpf_version) ? FD_CHECK_ST : FD_VALID;
268 :
269 : /* SIMD-0173 / SIMD-0377: CALLX references valid register numbers
270 : https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/verifier.rs#L198-L214 */
271 8994 : validation_map[ 0x8d ] = FD_VM_SBPF_CALLX_USES_SRC_REG(sbpf_version) ? FD_CHECK_CALL_REG_SRC
272 8994 : : FD_VM_SBPF_CALLX_USES_DST_REG(sbpf_version) ? FD_CHECK_CALL_REG_DST
273 4659 : : FD_CHECK_CALL_REG_IMM;
274 :
275 : /* SIMD-0174: MUL, DIV, MOD */
276 8994 : validation_map[ 0x24 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_INVALID : FD_VALID;
277 8994 : validation_map[ 0x34 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_INVALID : FD_CHECK_DIV;
278 8994 : validation_map[ 0x94 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_INVALID : FD_CHECK_DIV;
279 : /* note: 0x?c, 0x?7, 0x?f should not be overwritten because they're now load/store ix */
280 :
281 : /* SIMD-0174: NEG
282 : https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/verifier.rs#L274 */
283 8994 : validation_map[ 0x84 ] = !FD_VM_SBPF_DISABLE_NEG(sbpf_version) ? FD_VALID : FD_INVALID;
284 : /* note: 0x87 should not be overwritten because it was NEG64 and it becomes STW */
285 :
286 : /* SIMD-0174: MUL, DIV, MOD */
287 8994 : validation_map[ 0x36 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID; /* UHMUL64 */
288 8994 : validation_map[ 0x3e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
289 8994 : validation_map[ 0x46 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* UDIV32 */
290 8994 : validation_map[ 0x4e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
291 8994 : validation_map[ 0x56 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* UDIV64 */
292 8994 : validation_map[ 0x5e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
293 8994 : validation_map[ 0x66 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* UREM32 */
294 8994 : validation_map[ 0x6e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
295 8994 : validation_map[ 0x76 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* UREM64 */
296 8994 : validation_map[ 0x7e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
297 8994 : validation_map[ 0x86 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID; /* LMUL32 */
298 8994 : validation_map[ 0x8e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
299 8994 : validation_map[ 0x96 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID; /* LMUL64 */
300 8994 : validation_map[ 0x9e ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
301 8994 : validation_map[ 0xb6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID; /* SHMUL64 */
302 8994 : validation_map[ 0xbe ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
303 8994 : validation_map[ 0xc6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* SDIV32 */
304 8994 : validation_map[ 0xce ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
305 8994 : validation_map[ 0xd6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* SDIV64 */
306 8994 : validation_map[ 0xde ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
307 8994 : validation_map[ 0xe6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* SREM32 */
308 8994 : validation_map[ 0xee ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
309 8994 : validation_map[ 0xf6 ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_CHECK_DIV : FD_INVALID; /* SREM64 */
310 8994 : validation_map[ 0xfe ] = FD_VM_SBPF_ENABLE_PQR (sbpf_version) ? FD_VALID : FD_INVALID;
311 :
312 : /* SIMD-0377: JMP32
313 : https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/verifier.rs#L354-L375
314 :
315 : Note that these override some opcodes that conflict with PQR, so
316 : these must come AFTER PQR. */
317 8994 : if( FD_VM_SBPF_ENABLE_JMP32( sbpf_version ) ) {
318 633 : validation_map[ 0x16 ] = FD_CHECK_JMP; /* JEQ32_IMM */
319 633 : validation_map[ 0x1e ] = FD_CHECK_JMP; /* JEQ32_REG */
320 633 : validation_map[ 0x26 ] = FD_CHECK_JMP; /* JGT32_IMM */
321 633 : validation_map[ 0x2e ] = FD_CHECK_JMP; /* JGT32_REG */
322 633 : validation_map[ 0x36 ] = FD_CHECK_JMP; /* JGE32_IMM */
323 633 : validation_map[ 0x3e ] = FD_CHECK_JMP; /* JGE32_REG */
324 633 : validation_map[ 0x46 ] = FD_CHECK_JMP; /* JSET32_IMM */
325 633 : validation_map[ 0x4e ] = FD_CHECK_JMP; /* JSET32_REG */
326 633 : validation_map[ 0x56 ] = FD_CHECK_JMP; /* JNE32_IMM */
327 633 : validation_map[ 0x5e ] = FD_CHECK_JMP; /* JNE32_REG */
328 633 : validation_map[ 0x66 ] = FD_CHECK_JMP; /* JSGT32_IMM */
329 633 : validation_map[ 0x6e ] = FD_CHECK_JMP; /* JSGT32_REG */
330 633 : validation_map[ 0x76 ] = FD_CHECK_JMP; /* JSGE32_IMM */
331 633 : validation_map[ 0x7e ] = FD_CHECK_JMP; /* JSGE32_REG */
332 633 : validation_map[ 0xa6 ] = FD_CHECK_JMP; /* JLT32_IMM */
333 633 : validation_map[ 0xae ] = FD_CHECK_JMP; /* JLT32_REG */
334 633 : validation_map[ 0xb6 ] = FD_CHECK_JMP; /* JLE32_IMM */
335 633 : validation_map[ 0xbe ] = FD_CHECK_JMP; /* JLE32_REG */
336 633 : validation_map[ 0xc6 ] = FD_CHECK_JMP; /* JSLT32_IMM */
337 633 : validation_map[ 0xce ] = FD_CHECK_JMP; /* JSLT32_REG */
338 633 : validation_map[ 0xd6 ] = FD_CHECK_JMP; /* JSLE32_IMM */
339 633 : validation_map[ 0xde ] = FD_CHECK_JMP; /* JSLE32_REG */
340 633 : }
341 :
342 : /* FIXME: These checks are not necessary assuming fd_vm_t is populated by metadata
343 : generated in fd_sbpf_elf_peek (which performs these checks). But there is no guarantee, and
344 : this non-guarantee is (rightfully) exploited by the fuzz harnesses.
345 : Agave doesn't perform these checks explicitly due to Rust's guarantees */
346 8994 : if( FD_UNLIKELY( vm->text_sz / 8UL != vm->text_cnt ||
347 8994 : (const uchar *)vm->text < vm->rodata ||
348 8994 : (ulong)vm->text > (ulong)vm->text + vm->text_sz || /* Overflow chk */
349 8994 : (const uchar *)vm->text + vm->text_sz > vm->rodata + vm->rodata_sz +
350 8994 : ( FD_VM_SBPF_ENABLE_STRICTER_ELF_HEADERS( sbpf_version ) ? vm->text_sz : 0UL ) ) )
351 0 : return FD_VM_ERR_BAD_TEXT;
352 :
353 8994 : 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 */
354 0 : return FD_VM_TEXT_SZ_UNALIGNED;
355 :
356 8994 : if ( FD_UNLIKELY( vm->text_cnt == 0UL ) ) /* https://github.com/solana-labs/rbpf/blob/v0.8.0/src/verifier.rs#L112 */
357 0 : return FD_VM_ERR_EMPTY;
358 :
359 8994 : ulong const * text = vm->text;
360 8994 : ulong text_cnt = vm->text_cnt;
361 :
362 805592361 : for( ulong i=0UL; i<text_cnt; i++ ) {
363 805586133 : fd_sbpf_instr_t instr = fd_sbpf_instr( text[i] );
364 :
365 805586133 : uchar validation_code = validation_map[ instr.opcode.raw ];
366 805586133 : switch( validation_code ) {
367 :
368 644444604 : case FD_VALID: break;
369 :
370 : /* Store ops are special because they allow dreg==r10.
371 : We use a special validation_code, used later in the
372 : "Check registers" section.
373 : But there's nothing to do at this time. */
374 30222 : case FD_CHECK_ST: break;
375 :
376 41073 : case FD_CHECK_JMP: {
377 41073 : long jmp_dst = (long)i + (long)instr.offset + 1L;
378 41073 : if( FD_UNLIKELY( (jmp_dst<0) | (jmp_dst>=(long)text_cnt) ) ) return FD_VM_ERR_JMP_OUT_OF_BOUNDS;
379 : //FIXME: this shouldn't be here?
380 40926 : if( FD_UNLIKELY( fd_sbpf_instr( text[ jmp_dst ] ).opcode.raw==FD_SBPF_OP_ADDL_IMM ) ) return FD_VM_ERR_JMP_TO_ADDL_IMM;
381 40926 : break;
382 40926 : }
383 :
384 40926 : case FD_CHECK_END: {
385 96 : if( FD_UNLIKELY( !((instr.imm==16) | (instr.imm==32) | (instr.imm==64)) ) ) return FD_VM_ERR_INVALID_END_IMM;
386 78 : break;
387 96 : }
388 :
389 : /* https://github.com/solana-labs/rbpf/blob/b503a1867a9cfa13f93b4d99679a17fe219831de/src/verifier.rs#L244 */
390 10341 : case FD_CHECK_LDQ: {
391 : /* https://github.com/solana-labs/rbpf/blob/b503a1867a9cfa13f93b4d99679a17fe219831de/src/verifier.rs#L131 */
392 10341 : if( FD_UNLIKELY( (i+1UL)>=text_cnt ) ) return FD_VM_ERR_INCOMPLETE_LDQ;
393 :
394 : /* https://github.com/solana-labs/rbpf/blob/b503a1867a9cfa13f93b4d99679a17fe219831de/src/verifier.rs#L137-L139 */
395 10341 : fd_sbpf_instr_t addl_imm = fd_sbpf_instr( text[ i+1UL ] );
396 10341 : if( FD_UNLIKELY( addl_imm.opcode.raw!=FD_SBPF_OP_ADDL_IMM ) ) return FD_VM_ERR_LDQ_NO_ADDL_IMM;
397 :
398 : /* FIXME: SET A BIT MAP HERE OF ADDL_IMM TO DENOTE * AS FORBIDDEN
399 : BRANCH TARGETS OF CALL_REG?? */
400 :
401 10341 : i++; /* Skip the addl imm */
402 10341 : break;
403 10341 : }
404 :
405 64407210 : case FD_CHECK_DIV: {
406 64407210 : if( FD_UNLIKELY( instr.imm==0 ) ) return FD_VM_ERR_SIGFPE;
407 64407150 : break;
408 64407210 : }
409 :
410 64407150 : case FD_CHECK_SH32: {
411 48308418 : if( FD_UNLIKELY( instr.imm>=32 ) ) return FD_VM_SH_OVERFLOW;
412 48308328 : break;
413 48308418 : }
414 :
415 48338889 : case FD_CHECK_SH64: {
416 48338889 : if( FD_UNLIKELY( instr.imm>=64 ) ) return FD_VM_SH_OVERFLOW;
417 48338781 : break;
418 48338889 : }
419 :
420 : /* https://github.com/anza-xyz/sbpf/blob/v0.11.1/src/verifier.rs#L220 */
421 48338781 : case FD_CHECK_CALL_REG_SRC: {
422 21 : if( FD_UNLIKELY( instr.src_reg > 9 ) ) {
423 9 : return FD_VM_ERR_INVALID_REG;
424 9 : }
425 12 : break;
426 21 : }
427 4068 : case FD_CHECK_CALL_REG_IMM: {
428 4068 : if( FD_UNLIKELY( instr.imm > 9 ) ) {
429 9 : return FD_VM_ERR_INVALID_REG;
430 9 : }
431 4059 : break;
432 4068 : }
433 : /* https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/verifier.rs#L205-L206 */
434 4059 : case FD_CHECK_CALL_REG_DST: {
435 9 : if( FD_UNLIKELY( instr.dst_reg > 9 ) ) {
436 3 : return FD_VM_ERR_INVALID_REG;
437 3 : }
438 6 : break;
439 9 : }
440 :
441 1182 : case FD_INVALID: default: return FD_VM_ERR_INVALID_OPCODE;
442 805586133 : }
443 :
444 : /* Check registers
445 : https://github.com/solana-labs/rbpf/blob/v0.8.5/src/verifier.rs#L177 */
446 :
447 : /* Source register */
448 805584507 : if( FD_UNLIKELY( instr.src_reg>10 ) ) return FD_VM_ERR_INVALID_SRC_REG;
449 :
450 : /* Special R10 register allowed for ADD64_IMM */
451 805584039 : if( instr.dst_reg==10U
452 805584039 : && FD_VM_SBPF_MANUAL_STACK_FRAME_BUMP( sbpf_version )
453 805584039 : && instr.opcode.raw == 0x07
454 805584039 : && ( instr.imm % FD_VM_SBPF_DYNAMIC_STACK_FRAMES_ALIGN )==0 )
455 9 : continue;
456 :
457 : /* Destination register. */
458 805584030 : if( FD_UNLIKELY( instr.dst_reg==10U && validation_code != FD_CHECK_ST ) ) return FD_VM_ERR_INVALID_DST_REG;
459 805583571 : if( FD_UNLIKELY( instr.dst_reg > 10U ) ) return FD_VM_ERR_INVALID_DST_REG;
460 805583571 : }
461 :
462 6228 : return FD_VM_SUCCESS;
463 8994 : }
464 :
465 : FD_FN_CONST ulong
466 1317 : fd_vm_align( void ) {
467 1317 : return FD_VM_ALIGN;
468 1317 : }
469 :
470 : FD_FN_CONST ulong
471 648 : fd_vm_footprint( void ) {
472 648 : return FD_VM_FOOTPRINT;
473 648 : }
474 :
475 : void *
476 600 : fd_vm_new( void * shmem ) {
477 :
478 600 : if( FD_UNLIKELY( !shmem ) ) {
479 0 : FD_LOG_WARNING(( "NULL shmem" ));
480 0 : return NULL;
481 0 : }
482 :
483 600 : if( FD_UNLIKELY( !fd_ulong_is_aligned( (ulong)shmem, fd_vm_align() ) ) ) {
484 0 : FD_LOG_WARNING(( "misaligned shmem" ));
485 0 : return NULL;
486 0 : }
487 :
488 600 : fd_vm_t * vm = (fd_vm_t *)shmem;
489 600 : fd_memset( vm, 0, fd_vm_footprint() );
490 :
491 600 : FD_COMPILER_MFENCE();
492 600 : FD_VOLATILE( vm->magic ) = FD_VM_MAGIC;
493 600 : FD_COMPILER_MFENCE();
494 :
495 600 : return shmem;
496 600 : }
497 :
498 : fd_vm_t *
499 600 : fd_vm_join( void * shmem ) {
500 :
501 600 : if( FD_UNLIKELY( !shmem ) ) {
502 0 : FD_LOG_WARNING(( "NULL shmem" ));
503 0 : return NULL;
504 0 : }
505 :
506 600 : if( FD_UNLIKELY( !fd_ulong_is_aligned( (ulong)shmem, fd_vm_align() ) ) ) {
507 0 : FD_LOG_WARNING(( "misaligned shmem" ));
508 0 : return NULL;
509 0 : }
510 :
511 600 : fd_vm_t * vm = (fd_vm_t *)shmem;
512 :
513 600 : if( FD_UNLIKELY( vm->magic!=FD_VM_MAGIC ) ) {
514 0 : FD_LOG_WARNING(( "bad magic" ));
515 0 : return NULL;
516 0 : }
517 :
518 600 : return vm;
519 600 : }
520 :
521 : void *
522 69 : fd_vm_leave( fd_vm_t * vm ) {
523 :
524 69 : if( FD_UNLIKELY( !vm ) ) {
525 0 : FD_LOG_WARNING(( "NULL vm" ));
526 0 : return NULL;
527 0 : }
528 :
529 69 : return (void *)vm;
530 69 : }
531 :
532 : void *
533 69 : fd_vm_delete( void * shmem ) {
534 :
535 69 : if( FD_UNLIKELY( !shmem ) ) {
536 0 : FD_LOG_WARNING(( "NULL shmem" ));
537 0 : return NULL;
538 0 : }
539 :
540 69 : if( FD_UNLIKELY( !fd_ulong_is_aligned( (ulong)shmem, fd_vm_align() ) ) ) {
541 0 : FD_LOG_WARNING(( "misaligned shmem" ));
542 0 : return NULL;
543 0 : }
544 :
545 69 : fd_vm_t * vm = (fd_vm_t *)shmem;
546 :
547 69 : if( FD_UNLIKELY( vm->magic!=FD_VM_MAGIC ) ) {
548 0 : FD_LOG_WARNING(( "bad magic" ));
549 0 : return NULL;
550 0 : }
551 :
552 69 : FD_COMPILER_MFENCE();
553 69 : FD_VOLATILE( vm->magic ) = 0UL;
554 69 : FD_COMPILER_MFENCE();
555 :
556 69 : return (void *)vm;
557 69 : }
558 :
559 : fd_vm_t *
560 : fd_vm_init(
561 : fd_vm_t * vm,
562 : fd_exec_instr_ctx_t * instr_ctx,
563 : ulong heap_max,
564 : ulong entry_cu,
565 : uchar const * rodata,
566 : ulong rodata_sz,
567 : ulong const * text,
568 : ulong text_cnt,
569 : ulong text_off,
570 : ulong text_sz,
571 : ulong entry_pc,
572 : ulong const * calldests,
573 : ulong sbpf_version,
574 : fd_sbpf_syscalls_t * syscalls,
575 : fd_vm_trace_t * trace,
576 : fd_sha256_t * sha,
577 : fd_vm_input_region_t * mem_regions,
578 : uint mem_regions_cnt,
579 : fd_vm_acc_region_meta_t * acc_region_metas,
580 : uchar is_deprecated,
581 : int direct_mapping,
582 : int syscall_parameter_address_restrictions,
583 : int virtual_address_space_adjustments,
584 : int dump_syscall_to_pb,
585 9060 : ulong r2_initial_value ) {
586 :
587 9060 : if ( FD_UNLIKELY( vm == NULL ) ) {
588 0 : FD_LOG_WARNING(( "NULL vm" ));
589 0 : return NULL;
590 0 : }
591 :
592 9060 : if ( FD_UNLIKELY( vm->magic != FD_VM_MAGIC ) ) {
593 0 : FD_LOG_WARNING(( "bad magic" ));
594 0 : return NULL;
595 0 : }
596 :
597 9060 : if ( FD_UNLIKELY( heap_max > FD_VM_HEAP_MAX ) ) {
598 0 : FD_LOG_WARNING(( "heap_max > FD_VM_HEAP_MAX" ));
599 0 : return NULL;
600 0 : }
601 :
602 : /* We do support calldests==NULL for tests that do not require
603 : program execution, e.g. just testing some interpreter functionality
604 : or syscalls.
605 : SBPF v3+ no longer needs calldests, so we enforce it to be NULL. */
606 9060 : if( FD_UNLIKELY( calldests && FD_VM_SBPF_ENABLE_STRICTER_ELF_HEADERS( sbpf_version ) ) ) {
607 0 : return NULL;
608 0 : }
609 :
610 : // Set the vm fields
611 9060 : vm->instr_ctx = instr_ctx;
612 9060 : vm->heap_max = heap_max;
613 9060 : vm->entry_cu = entry_cu;
614 9060 : vm->rodata = rodata;
615 9060 : vm->rodata_sz = rodata_sz;
616 9060 : vm->text = text;
617 9060 : vm->text_cnt = text_cnt;
618 : /* In SBPF V3, bytecode starts at vaddr 0x100000000 exactly, so
619 : text_off from the POV of the VM is 0.
620 : https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/interpreter.rs#L539 */
621 9060 : vm->text_off = FD_VM_SBPF_ENABLE_LOWER_RODATA_VADDR( sbpf_version ) ? 0UL : text_off;
622 9060 : vm->text_sz = text_sz;
623 9060 : vm->entry_pc = entry_pc;
624 9060 : vm->calldests = calldests;
625 9060 : vm->sbpf_version = sbpf_version;
626 9060 : vm->syscalls = syscalls;
627 9060 : vm->trace = trace;
628 9060 : vm->sha = sha;
629 9060 : vm->input_mem_regions = mem_regions;
630 9060 : vm->input_mem_regions_cnt = mem_regions_cnt;
631 9060 : vm->acc_region_metas = acc_region_metas;
632 9060 : vm->is_deprecated = is_deprecated;
633 9060 : vm->direct_mapping = direct_mapping;
634 9060 : vm->syscall_parameter_address_restrictions = syscall_parameter_address_restrictions;
635 9060 : vm->virtual_address_space_adjustments = virtual_address_space_adjustments;
636 : /* https://github.com/anza-xyz/agave/blob/v4.0.0-beta.3/program-runtime/src/vm.rs#L99-L103 */
637 9060 : if( FD_UNLIKELY( FD_VM_SBPF_STACK_FRAME_GAPS( sbpf_version ) && !virtual_address_space_adjustments ) ) {
638 4005 : vm->stack_frame_sz = FD_VM_STACK_FRAME_SZ;
639 4005 : vm->stack_push_frame_count = 2UL;
640 5055 : } else if ( FD_VM_SBPF_MANUAL_STACK_FRAME_BUMP( sbpf_version ) ) {
641 4341 : vm->stack_frame_sz = 0UL;
642 4341 : vm->stack_push_frame_count = 0UL;
643 4341 : } else {
644 714 : vm->stack_frame_sz = FD_VM_STACK_FRAME_SZ;
645 714 : vm->stack_push_frame_count = 1UL;
646 714 : }
647 :
648 9060 : vm->segv_vaddr = ULONG_MAX;
649 9060 : vm->segv_access_len = 0UL;
650 9060 : vm->segv_access_type = 0;
651 9060 : vm->dump_syscall_to_pb = dump_syscall_to_pb;
652 :
653 : /* Unpack input and rodata */
654 9060 : fd_vm_mem_cfg( vm );
655 :
656 : /* Initialize registers */
657 : /* FIXME: Zero out shadow, stack and heap here? */
658 9060 : fd_memset( vm->reg, 0, FD_VM_REG_MAX * sizeof(ulong) );
659 9060 : vm->reg[1] = FD_VM_MEM_MAP_INPUT_REGION_START;
660 9060 : vm->reg[2] = r2_initial_value;
661 : /* https://github.com/anza-xyz/sbpf/blob/v0.14.4/src/vm.rs#L325-L330 */
662 9060 : vm->reg[10] = FD_VM_MEM_MAP_STACK_REGION_START +
663 9060 : ( FD_VM_SBPF_MANUAL_STACK_FRAME_BUMP( vm->sbpf_version ) ? FD_VM_STACK_MAX : vm->stack_frame_sz );
664 : /* Note: Agave uses r11 as pc, we don't */
665 :
666 : /* Set execution state */
667 9060 : vm->pc = vm->entry_pc;
668 9060 : vm->ic = 0UL;
669 9060 : vm->cu = vm->entry_cu;
670 9060 : vm->frame_cnt = 0UL;
671 :
672 9060 : vm->heap_sz = 0UL;
673 :
674 : /* Do NOT reset logs */
675 :
676 9060 : return vm;
677 9060 : }
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