DrSocalkwe3n/luajit
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Increase range of GG_State loads via IR_FLOAD with REF_NIL.

Browse Source 
Require 32 bit alignment and store offset/4 instead.
Otherwise this can overflow the 10 bit limit for the FOLD op2 key.
This commit is contained in:
Mike Pall
2016-11-19 19:53:46 +01:00
parent 5400c1e424
commit e577db52c5
4 changed files with 8 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/lj_ir.c
View File

@@ -145,10 +145,12 @@ TRef lj_ir_call(jit_State *J, IRCallID id, ...)
return emitir(CCI_OPTYPE(ci), tr, id);
}
/* Load field of type t from GG_State + offset. */
/* Load field of type t from GG_State + offset. Must be 32 bit aligned. */
LJ_FUNC TRef lj_ir_ggfload(jit_State *J, IRType t, uintptr_t ofs)
{
lua_assert(ofs >= IRFL__MAX && ofs < REF_BIAS);
lua_assert((ofs & 3) == 0);
ofs >>= 2;
lua_assert(ofs >= IRFL__MAX && ofs <= 0x3ff); /* 10 bit FOLD key limit. */
lj_ir_set(J, IRT(IR_FLOAD, t), REF_NIL, ofs);
return lj_opt_fold(J);
}