git.m6w6.name Git - m6w6/ext-psi/blob - src/libjit.c

   1 #ifdef HAVE_CONFIG_H
   2 # include "config.h"
   3 #endif
   4
   5 #include "php.h"
   6
   7 #ifdef HAVE_LIBJIT
   8
   9 #include "php_psi.h"
  10 #include "libjit.h"
  11
  12 #include <jit/jit.h>
  13
  14 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data);
  15
  16 static inline jit_abi_t psi_jit_abi(const char *convention) {
  17         return jit_abi_cdecl;
  18 }
  19 static inline jit_type_t psi_jit_token_type(token_t t) {
  20         switch (t) {
  21         case PSI_T_VOID:
  22                 return jit_type_void;
  23         case PSI_T_INT8:
  24                 return jit_type_sbyte;
  25         case PSI_T_UINT8:
  26                 return jit_type_ubyte;
  27         case PSI_T_INT16:
  28                 return jit_type_short;
  29         case PSI_T_UINT16:
  30                 return jit_type_ushort;
  31         case PSI_T_INT32:
  32                 return jit_type_int;
  33         case PSI_T_UINT32:
  34                 return jit_type_uint;
  35         case PSI_T_INT64:
  36                 return jit_type_long;
  37         case PSI_T_UINT64:
  38                 return jit_type_ulong;
  39         case PSI_T_BOOL:
  40                 return jit_type_sys_bool;
  41         case PSI_T_FLOAT:
  42                 return jit_type_sys_float;
  43         case PSI_T_DOUBLE:
  44                 return jit_type_sys_double;
  45         EMPTY_SWITCH_DEFAULT_CASE();
  46         }
  47 }
  48 static inline jit_type_t psi_jit_decl_type(decl_type *type) {
  49         return psi_jit_token_type(real_decl_type(type)->type);
  50 }
  51 static inline jit_type_t psi_jit_decl_arg_type(decl_arg *darg) {
  52         if (darg->var->pointer_level) {
  53                 return jit_type_void_ptr;
  54         } else {
  55                 return psi_jit_decl_type(darg->type);
  56         }
  57 }
  58
  59 typedef struct PSI_LibjitContext {
  60         jit_context_t jit;
  61         jit_type_t signature;
  62         struct {
  63                 struct PSI_LibjitData **list;
  64                 size_t count;
  65         } data;
  66 } PSI_LibjitContext;
  67
  68 typedef struct PSI_LibjitCall {
  69         void *closure;
  70         jit_type_t signature;
  71         jit_type_t params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
  72 } PSI_LibjitCall;
  73
  74 typedef struct PSI_LibjitData {
  75         PSI_LibjitContext *context;
  76         impl *impl;
  77         zend_internal_arg_info *arginfo;
  78 } PSI_LibjitData;
  79
  80 static inline PSI_LibjitCall *PSI_LibjitCallAlloc(PSI_Context *C, decl *decl) {
  81         size_t i, c = decl->args ? decl->args->count : 0;
  82         PSI_LibjitCall *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
  83
  84         for (i = 0; i < c; ++i) {
  85                 call->params[i] = psi_jit_decl_arg_type(decl->args->args[i]);
  86         }
  87         call->params[c] = NULL;
  88
  89         decl->call.info = call;
  90         decl->call.args = (void **) &call->params[c+1];
  91
  92         call->signature = jit_type_create_signature(
  93                         psi_jit_abi(decl->abi->convention),
  94                         psi_jit_decl_arg_type(decl->func),
  95                         call->params, c, 1);
  96         return call;
  97 }
  98
  99 static inline void PSI_LibjitCallInitClosure(PSI_Context *C, PSI_LibjitCall *call, impl *impl) {
 100         PSI_LibjitContext *context = C->context;
 101         call->closure = jit_closure_create(context->jit, context->signature,
 102                         &psi_jit_handler, impl);
 103 }
 104
 105 static inline void PSI_LibjitCallFree(PSI_LibjitCall *call) {
 106         jit_type_free(call->signature);
 107 }
 108
 109 static inline PSI_LibjitContext *PSI_LibjitContextInit(PSI_LibjitContext *L) {
 110         jit_type_t params[] = {
 111                 jit_type_void_ptr,
 112                 jit_type_void_ptr
 113         };
 114
 115         if (!L) {
 116                 L = malloc(sizeof(*L));
 117         }
 118         memset(L, 0, sizeof(*L));
 119
 120         L->jit = jit_context_create();
 121         L->signature = jit_type_create_signature(jit_abi_cdecl, jit_type_void,
 122                         params, 2, 1);
 123
 124         return L;
 125 }
 126
 127 static inline void PSI_LibjitContextDtor(PSI_LibjitContext *L) {
 128         jit_type_free(L->signature);
 129         jit_context_destroy(L->jit);
 130 }
 131
 132 static inline void PSI_LibjitContextFree(PSI_LibjitContext **L) {
 133         if (*L) {
 134                 PSI_LibjitContextDtor(*L);
 135                 free(*L);
 136                 *L = NULL;
 137         }
 138 }
 139
 140 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data)
 141 {
 142         psi_call(*(zend_execute_data **)_args[0], *(zval **)_args[1], _data);
 143 }
 144
 145 static void psi_jit_init(PSI_Context *C)
 146 {
 147         C->context = PSI_LibjitContextInit(NULL);
 148 }
 149
 150 static void psi_jit_dtor(PSI_Context *C)
 151 {
 152         if (C->decls) {
 153                 size_t i;
 154
 155                 for (i = 0; i < C->decls->count; ++i) {
 156                         decl *decl = C->decls->list[i];
 157
 158                         PSI_LibjitCallFree(decl->call.info);
 159                 }
 160         }
 161         PSI_LibjitContextFree((void *) &C->context);
 162 }
 163
 164 static zend_function_entry *psi_jit_compile(PSI_Context *C)
 165 {
 166         size_t i, j = 0;
 167         zend_function_entry *zfe;
 168         PSI_LibjitContext *ctx = C->context;
 169
 170         if (!C->impls) {
 171                 return NULL;
 172         }
 173
 174         zfe = calloc(C->impls->count + 1, sizeof(*zfe));
 175         jit_context_build_start(ctx->jit);
 176
 177         for (i = 0; i < C->impls->count; ++i) {
 178                 zend_function_entry *zf = &zfe[j];
 179                 PSI_LibjitCall *call;
 180                 impl *impl = C->impls->list[i];
 181
 182                 if (!impl->decl) {
 183                         continue;
 184                 }
 185
 186                 call = PSI_LibjitCallAlloc(C, impl->decl);
 187                 PSI_LibjitCallInitClosure(C, call, impl);
 188
 189                 zf->fname = impl->func->name + (impl->func->name[0] == '\\');
 190                 zf->num_args = impl->func->args->count;
 191                 zf->handler = call->closure;
 192                 zf->arg_info = psi_internal_arginfo(impl);
 193                 ++j;
 194         }
 195
 196         for (i = 0; i < C->decls->count; ++i) {
 197                 decl *decl = C->decls->list[i];
 198
 199                 if (decl->impl) {
 200                         continue;
 201                 }
 202
 203                 PSI_LibjitCallAlloc(C, decl);
 204         }
 205
 206         jit_context_build_end(ctx->jit);
 207
 208         return zfe;
 209 }
 210
 211 static void psi_jit_call(PSI_Context *C, impl_val *ret_val, decl *decl) {
 212         PSI_LibjitCall *call = decl->call.info;
 213
 214         jit_apply(call->signature, decl->call.sym, decl->call.args,
 215                         decl->args->count, ret_val);
 216 }
 217
 218 static PSI_ContextOps ops = {
 219         psi_jit_init,
 220         psi_jit_dtor,
 221         psi_jit_compile,
 222         psi_jit_call,
 223 };
 224
 225 PSI_ContextOps *PSI_Libjit(void)
 226 {
 227         return &ops;
 228 }
 229
 230 #endif /* HAVE_LIBJIT */