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

   1 #include "php.h"
   2 #include "php_psi.h"
   3 #include "libjit.h"
   4
   5 #include <jit/jit.h>
   6
   7 static void handler(jit_type_t _sig, void *result, void **_args, void *_data);
   8
   9 static inline jit_abi_t psi_jit_abi(const char *convention) {
  10         return jit_abi_cdecl;
  11 }
  12 static inline jit_type_t psi_jit_type(token_t t) {
  13         switch (t) {
  14         default:
  15                 ZEND_ASSERT(0);
  16                 /* no break */
  17         case PSI_T_VOID:
  18                 return jit_type_void;
  19         case PSI_T_SINT8:
  20                 return jit_type_sbyte;
  21         case PSI_T_UINT8:
  22                 return jit_type_ubyte;
  23         case PSI_T_SINT16:
  24                 return jit_type_short;
  25         case PSI_T_UINT16:
  26                 return jit_type_ushort;
  27         case PSI_T_SINT32:
  28                 return jit_type_int;
  29         case PSI_T_UINT32:
  30                 return jit_type_uint;
  31         case PSI_T_SINT64:
  32                 return jit_type_long;
  33         case PSI_T_UINT64:
  34                 return jit_type_ulong;
  35         case PSI_T_BOOL:
  36                 return jit_type_sys_bool;
  37         case PSI_T_CHAR:
  38                 return jit_type_sys_char;
  39         case PSI_T_SHORT:
  40                 return jit_type_sys_short;
  41         case PSI_T_INT:
  42                 return jit_type_sys_int;
  43         case PSI_T_LONG:
  44                 return jit_type_sys_long;
  45         case PSI_T_FLOAT:
  46                 return jit_type_sys_float;
  47         case PSI_T_DOUBLE:
  48                 return jit_type_sys_double;
  49         }
  50 }
  51 static inline jit_type_t psi_jit_decl_type(decl_type *type) {
  52         return psi_jit_type(real_decl_type(type)->type);
  53 }
  54 static inline jit_type_t psi_jit_decl_arg_type(decl_arg *darg) {
  55         if (darg->var->pointer_level) {
  56                 return jit_type_void_ptr;
  57         } else {
  58                 return psi_jit_decl_type(darg->type);
  59         }
  60 }
  61
  62 typedef struct PSI_LibjitContext {
  63         jit_context_t jit;
  64         jit_type_t signature;
  65         struct {
  66                 struct PSI_LibjitData **list;
  67                 size_t count;
  68         } data;
  69 } PSI_LibjitContext;
  70
  71 typedef struct PSI_LibjitData {
  72         PSI_LibjitContext *context;
  73         impl *impl;
  74         zend_internal_arg_info *arginfo;
  75         void *closure;
  76         jit_type_t signature;
  77         jit_type_t params[1];
  78 } PSI_LibjitData;
  79
  80 static inline PSI_LibjitData *PSI_LibjitDataAlloc(PSI_LibjitContext *context, impl *impl) {
  81         size_t i, c = impl->decl->args->count;
  82         PSI_LibjitData *data = malloc(sizeof(*data) + (c ? c-1 : c) * sizeof(jit_type_t));
  83
  84         data->context = context;
  85         data->impl = impl;
  86         data->arginfo = psi_internal_arginfo(impl);
  87         for (i = 0; i < c; ++i) {
  88                 data->params[i] = psi_jit_decl_arg_type(impl->decl->args->args[i]);
  89         }
  90
  91         data->signature = jit_type_create_signature(
  92                 psi_jit_abi(data->impl->decl->abi->convention),
  93                 psi_jit_decl_arg_type(data->impl->decl->func),
  94                 data->params,
  95                 data->impl->decl->args->count,
  96                 1);
  97         data->closure = jit_closure_create(context->jit, context->signature, &handler, data);
  98
  99         context->data.list = realloc(context->data.list, ++context->data.count * sizeof(*context->data.list));
 100         context->data.list[context->data.count-1] = data;
 101
 102         return data;
 103 }
 104
 105 static inline void PSI_LibjitDataFree(PSI_LibjitData *data) {
 106         free(data->arginfo);
 107         jit_type_free(data->signature);
 108         free(data);
 109 }
 110
 111 static inline PSI_LibjitContext *PSI_LibjitContextInit(PSI_LibjitContext *L) {
 112         jit_type_t params[] = {
 113                 jit_type_void_ptr,
 114                 jit_type_void_ptr
 115         };
 116
 117         if (!L) {
 118                 L = malloc(sizeof(*L));
 119         }
 120         memset(L, 0, sizeof(*L));
 121
 122         L->jit = jit_context_create();
 123         L->signature = jit_type_create_signature(jit_abi_cdecl, jit_type_void, params, 2, 1);
 124
 125         return L;
 126 }
 127
 128 static inline void PSI_LibjitContextDtor(PSI_LibjitContext *L) {
 129         size_t i;
 130
 131         for (i = 0; i < L->data.count; ++i) {
 132                 PSI_LibjitDataFree(L->data.list[i]);
 133         }
 134         if (L->data.list) {
 135                 free(L->data.list);
 136         }
 137         jit_type_free(L->signature);
 138         jit_context_destroy(L->jit);
 139 }
 140
 141 static inline void PSI_LibjitContextFree(PSI_LibjitContext **L) {
 142         if (*L) {
 143                 PSI_LibjitContextDtor(*L);
 144                 free(*L);
 145                 *L = NULL;
 146         }
 147 }
 148
 149 static void handler(jit_type_t _sig, void *result, void **_args, void *_data)
 150 {
 151         PSI_LibjitData *data = _data;
 152         size_t i;
 153         void **arg_ptr = NULL, **arg_prm = NULL;
 154         impl_val ret_val;
 155
 156         if (SUCCESS != psi_parse_args(*(zend_execute_data **)_args[0], data->impl)) {
 157                 return;
 158         }
 159
 160         if (data->impl->decl->args->count) {
 161                 arg_ptr = malloc(data->impl->decl->args->count * sizeof(*arg_ptr));
 162                 arg_prm = malloc(data->impl->decl->args->count * sizeof(*arg_prm));
 163
 164                 for (i = 0; i < data->impl->decl->args->count; ++i) {
 165                         decl_arg *darg = data->impl->decl->args->args[i];
 166
 167                         arg_ptr[i] = psi_do_let(darg);
 168                         arg_prm[i] = darg->let->val->is_reference ? &arg_ptr[i] : arg_ptr[i];
 169
 170                         darg->let->ptr = arg_ptr[i];
 171                 }
 172         }
 173
 174         jit_apply(data->signature, data->impl->decl->dlptr, arg_prm, data->impl->decl->args->count, &ret_val);
 175
 176         psi_do_return(data->impl, &ret_val, *(zval **)_args[1]);
 177
 178         for (i = 0; i < data->impl->stmts->set.count; ++i) {
 179                 set_stmt *set = data->impl->stmts->set.list[i];
 180
 181                 psi_do_set(set->arg->_zv, set->val->func, set->val->vars);
 182         }
 183
 184         for (i = 0; i < data->impl->stmts->fre.count; ++i) {
 185                 free_stmt *fre = data->impl->stmts->fre.list[i];
 186
 187                 psi_do_free(fre);
 188         }
 189
 190         psi_do_clean(data->impl);
 191
 192         if (arg_ptr) {
 193                 free(arg_ptr);
 194         }
 195         if (arg_prm) {
 196                 free(arg_prm);
 197         }
 198 }
 199
 200 static void init(PSI_Context *C)
 201 {
 202         C->context = PSI_LibjitContextInit(NULL);
 203 }
 204
 205 static void dtor(PSI_Context *C)
 206 {
 207         PSI_LibjitContextFree((void *) &C->context);
 208 }
 209
 210 static zend_function_entry *compile(PSI_Context *C, PSI_Data *D)
 211 {
 212         size_t i, j = 0;
 213         zend_function_entry *zfe = calloc(D->impls->count + 1, sizeof(*zfe));
 214         PSI_LibjitContext *ctx = C->context;
 215
 216         jit_context_build_start(ctx->jit);
 217
 218         for (i = 0; i < D->impls->count; ++i) {
 219                 zend_function_entry *zf = &zfe[j];
 220                 PSI_LibjitData *data;
 221
 222                 if (!D->impls->list[i]->decl) {
 223                         continue;
 224                 }
 225
 226                 data = PSI_LibjitDataAlloc(ctx, D->impls->list[i]);
 227                 zf->fname = D->impls->list[i]->func->name + (D->impls->list[i]->func->name[0] == '\\');
 228                 zf->num_args = D->impls->list[i]->func->args->count;
 229                 zf->handler = data->closure;
 230                 zf->arg_info = data->arginfo;
 231                 ++j;
 232         }
 233
 234         jit_context_build_end(ctx->jit);
 235
 236         return zfe;
 237 }
 238
 239 static PSI_ContextOps ops = {
 240         init,
 241         dtor,
 242         compile,
 243 };
 244
 245 PSI_ContextOps *PSI_Libjit(void)
 246 {
 247         return &ops;
 248 }