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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | /* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2019 ARM Limited */ #ifndef __TESTCASES_H__ #define __TESTCASES_H__ #include <stddef.h> #include <stdio.h> #include <stdbool.h> #include <stdint.h> #include <stdlib.h> #include <ucontext.h> #include <signal.h> /* Architecture specific sigframe definitions */ #include <asm/sigcontext.h> #define FPSIMD_CTX (1 << 0) #define SVE_CTX (1 << 1) #define ZA_CTX (1 << 2) #define EXTRA_CTX (1 << 3) #define ZT_CTX (1 << 4) #define FPMR_CTX (1 << 5) #define KSFT_BAD_MAGIC 0xdeadbeef #define HDR_SZ \ sizeof(struct _aarch64_ctx) #define GET_SF_RESV_HEAD(sf) \ (struct _aarch64_ctx *)(&(sf).uc.uc_mcontext.__reserved) #define GET_SF_RESV_SIZE(sf) \ sizeof((sf).uc.uc_mcontext.__reserved) #define GET_BUF_RESV_HEAD(buf) \ (struct _aarch64_ctx *)(&(buf).uc.uc_mcontext.__reserved) #define GET_BUF_RESV_SIZE(buf) \ (sizeof(buf) - sizeof(buf.uc) + \ sizeof((buf).uc.uc_mcontext.__reserved)) #define GET_UCP_RESV_SIZE(ucp) \ sizeof((ucp)->uc_mcontext.__reserved) #define ASSERT_BAD_CONTEXT(uc) do { \ char *err = NULL; \ if (!validate_reserved((uc), GET_UCP_RESV_SIZE((uc)), &err)) { \ if (err) \ fprintf(stderr, \ "Using badly built context - ERR: %s\n",\ err); \ } else { \ abort(); \ } \ } while (0) #define ASSERT_GOOD_CONTEXT(uc) do { \ char *err = NULL; \ if (!validate_reserved((uc), GET_UCP_RESV_SIZE((uc)), &err)) { \ if (err) \ fprintf(stderr, \ "Detected BAD context - ERR: %s\n", err);\ abort(); \ } else { \ fprintf(stderr, "uc context validated.\n"); \ } \ } while (0) /* * A simple record-walker for __reserved area: it walks through assuming * only to find a proper struct __aarch64_ctx header descriptor. * * Instead it makes no assumptions on the content and ordering of the * records, any needed bounds checking must be enforced by the caller * if wanted: this way can be used by caller on any maliciously built bad * contexts. * * head->size accounts both for payload and header _aarch64_ctx size ! */ #define GET_RESV_NEXT_HEAD(h) \ (struct _aarch64_ctx *)((char *)(h) + (h)->size) struct fake_sigframe { siginfo_t info; ucontext_t uc; }; bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err); struct _aarch64_ctx *get_header(struct _aarch64_ctx *head, uint32_t magic, size_t resv_sz, size_t *offset); static inline struct _aarch64_ctx *get_terminator(struct _aarch64_ctx *head, size_t resv_sz, size_t *offset) { return get_header(head, 0, resv_sz, offset); } static inline void write_terminator_record(struct _aarch64_ctx *tail) { if (tail) { tail->magic = 0; tail->size = 0; } } struct _aarch64_ctx *get_starting_head(struct _aarch64_ctx *shead, size_t need_sz, size_t resv_sz, size_t *offset); #endif |