1 /** 2 * Functions for generating pseudo-random CPER generic processor sections. 3 * 4 * Author: Lawrence.Tang@arm.com 5 **/ 6 7 #include <stdlib.h> 8 #include <libcper/BaseTypes.h> 9 #include <libcper/generator/gen-utils.h> 10 #include <libcper/generator/sections/gen-section.h> 11 12 //Generates a single pseudo-random generic processor section, saving the resulting address to the given 13 //location. Returns the size of the newly created section. generate_section_generic(void ** location,GEN_VALID_BITS_TEST_TYPE validBitsType)14size_t generate_section_generic(void **location, 15 GEN_VALID_BITS_TEST_TYPE validBitsType) 16 { 17 //Create random bytes. 18 size_t size = generate_random_section(location, 192); 19 20 //Set reserved locations to zero. 21 UINT8 *start_byte = (UINT8 *)*location; 22 UINT64 *validation = (UINT64 *)*location; 23 *validation &= 0x1FFF; 24 if (validBitsType == ALL_VALID) { 25 *validation = 0x1FFF; 26 } else if (validBitsType == SOME_VALID) { 27 *validation = 0x1555; 28 } 29 *(start_byte + 12) &= 0x7; 30 *((UINT16 *)(start_byte + 14)) = 0x0; 31 32 //Ensure CPU brand string does not terminate early. 33 for (int i = 0; i < 128; i++) { 34 UINT8 *byte = start_byte + 24 + i; 35 //Ensure only ascii is used 36 *byte = cper_rand() % 127 + 1; 37 38 //Null terminate last byte. 39 if (i == 127) { 40 *byte = 0x0; 41 } 42 } 43 44 return size; 45 } 46