mirror of
https://github.com/LuaJIT/LuaJIT.git
synced 2025-02-08 15:34:09 +00:00
dbf789536c
f8-f15 are callee-saved (not f0,f2,f4 and f6). There isn't space for them in the caller's stack frame so we need to increase the size of the interpreter's stack frame.
307 lines
9.1 KiB
C
307 lines
9.1 KiB
C
/*
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** Stack frames.
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** Copyright (C) 2005-2016 Mike Pall. See Copyright Notice in luajit.h
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*/
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#ifndef _LJ_FRAME_H
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#define _LJ_FRAME_H
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#include "lj_obj.h"
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#include "lj_bc.h"
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/* -- Lua stack frame ----------------------------------------------------- */
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/* Frame type markers in LSB of PC (4-byte aligned) or delta (8-byte aligned:
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**
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** PC 00 Lua frame
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** delta 001 C frame
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** delta 010 Continuation frame
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** delta 011 Lua vararg frame
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** delta 101 cpcall() frame
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** delta 110 ff pcall() frame
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** delta 111 ff pcall() frame with active hook
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*/
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enum {
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FRAME_LUA, FRAME_C, FRAME_CONT, FRAME_VARG,
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FRAME_LUAP, FRAME_CP, FRAME_PCALL, FRAME_PCALLH
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};
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#define FRAME_TYPE 3
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#define FRAME_P 4
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#define FRAME_TYPEP (FRAME_TYPE|FRAME_P)
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/* Macros to access and modify Lua frames. */
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#if LJ_FR2
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/* Two-slot frame info, required for 64 bit PC/GCRef:
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**
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** base-2 base-1 | base base+1 ...
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** [func PC/delta/ft] | [slots ...]
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** ^-- frame | ^-- base ^-- top
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**
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** Continuation frames:
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**
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** base-4 base-3 base-2 base-1 | base base+1 ...
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** [cont PC ] [func PC/delta/ft] | [slots ...]
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** ^-- frame | ^-- base ^-- top
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*/
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#define frame_gc(f) (gcval((f)-1))
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#define frame_ftsz(f) ((ptrdiff_t)(f)->ftsz)
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#define frame_pc(f) ((const BCIns *)frame_ftsz(f))
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#define setframe_gc(f, p, tp) (setgcVraw((f)-1, (p), (tp)))
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#define setframe_ftsz(f, sz) ((f)->ftsz = (sz))
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#define setframe_pc(f, pc) ((f)->ftsz = (int64_t)(intptr_t)(pc))
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#else
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/* One-slot frame info, sufficient for 32 bit PC/GCRef:
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**
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** base-1 | base base+1 ...
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** lo hi |
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** [func | PC/delta/ft] | [slots ...]
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** ^-- frame | ^-- base ^-- top
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**
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** Continuation frames:
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**
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** base-2 base-1 | base base+1 ...
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** lo hi lo hi |
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** [cont | PC] [func | PC/delta/ft] | [slots ...]
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** ^-- frame | ^-- base ^-- top
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*/
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#define frame_gc(f) (gcref((f)->fr.func))
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#define frame_ftsz(f) ((ptrdiff_t)(f)->fr.tp.ftsz)
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#define frame_pc(f) (mref((f)->fr.tp.pcr, const BCIns))
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#define setframe_gc(f, p, tp) (setgcref((f)->fr.func, (p)), UNUSED(tp))
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#define setframe_ftsz(f, sz) ((f)->fr.tp.ftsz = (int32_t)(sz))
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#define setframe_pc(f, pc) (setmref((f)->fr.tp.pcr, (pc)))
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#endif
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#define frame_type(f) (frame_ftsz(f) & FRAME_TYPE)
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#define frame_typep(f) (frame_ftsz(f) & FRAME_TYPEP)
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#define frame_islua(f) (frame_type(f) == FRAME_LUA)
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#define frame_isc(f) (frame_type(f) == FRAME_C)
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#define frame_iscont(f) (frame_typep(f) == FRAME_CONT)
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#define frame_isvarg(f) (frame_typep(f) == FRAME_VARG)
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#define frame_ispcall(f) ((frame_ftsz(f) & 6) == FRAME_PCALL)
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#define frame_func(f) (&frame_gc(f)->fn)
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#define frame_delta(f) (frame_ftsz(f) >> 3)
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#define frame_sized(f) (frame_ftsz(f) & ~FRAME_TYPEP)
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enum { LJ_CONT_TAILCALL, LJ_CONT_FFI_CALLBACK }; /* Special continuations. */
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#if LJ_FR2
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#define frame_contpc(f) (frame_pc((f)-2))
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#define frame_contv(f) (((f)-3)->u64)
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#else
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#define frame_contpc(f) (frame_pc((f)-1))
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#define frame_contv(f) (((f)-1)->u32.lo)
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#endif
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#if LJ_FR2
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#define frame_contf(f) ((ASMFunction)(uintptr_t)((f)-3)->u64)
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#elif LJ_64
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#define frame_contf(f) \
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((ASMFunction)(void *)((intptr_t)lj_vm_asm_begin + \
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(intptr_t)(int32_t)((f)-1)->u32.lo))
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#else
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#define frame_contf(f) ((ASMFunction)gcrefp(((f)-1)->gcr, void))
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#endif
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#define frame_iscont_fficb(f) \
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(LJ_HASFFI && frame_contv(f) == LJ_CONT_FFI_CALLBACK)
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#define frame_prevl(f) ((f) - (1+LJ_FR2+bc_a(frame_pc(f)[-1])))
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#define frame_prevd(f) ((TValue *)((char *)(f) - frame_sized(f)))
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#define frame_prev(f) (frame_islua(f)?frame_prevl(f):frame_prevd(f))
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/* Note: this macro does not skip over FRAME_VARG. */
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/* -- C stack frame ------------------------------------------------------- */
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/* Macros to access and modify the C stack frame chain. */
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/* These definitions must match with the arch-specific *.dasc files. */
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#if LJ_TARGET_X86
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#if LJ_ABI_WIN
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#define CFRAME_OFS_ERRF (19*4)
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#define CFRAME_OFS_NRES (18*4)
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#define CFRAME_OFS_PREV (17*4)
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#define CFRAME_OFS_L (16*4)
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#define CFRAME_OFS_SEH (9*4)
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#define CFRAME_OFS_PC (6*4)
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#define CFRAME_OFS_MULTRES (5*4)
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#define CFRAME_SIZE (16*4)
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#define CFRAME_SHIFT_MULTRES 0
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#else
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#define CFRAME_OFS_ERRF (15*4)
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#define CFRAME_OFS_NRES (14*4)
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#define CFRAME_OFS_PREV (13*4)
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#define CFRAME_OFS_L (12*4)
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#define CFRAME_OFS_PC (6*4)
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#define CFRAME_OFS_MULTRES (5*4)
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#define CFRAME_SIZE (12*4)
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#define CFRAME_SHIFT_MULTRES 0
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#endif
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#elif LJ_TARGET_X64
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#if LJ_ABI_WIN
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#define CFRAME_OFS_PREV (13*8)
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#if LJ_GC64
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#define CFRAME_OFS_PC (12*8)
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#define CFRAME_OFS_L (11*8)
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#define CFRAME_OFS_ERRF (21*4)
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#define CFRAME_OFS_NRES (20*4)
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#define CFRAME_OFS_MULTRES (8*4)
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#else
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#define CFRAME_OFS_PC (25*4)
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#define CFRAME_OFS_L (24*4)
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#define CFRAME_OFS_ERRF (23*4)
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#define CFRAME_OFS_NRES (22*4)
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#define CFRAME_OFS_MULTRES (21*4)
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#endif
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#define CFRAME_SIZE (10*8)
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#define CFRAME_SIZE_JIT (CFRAME_SIZE + 9*16 + 4*8)
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#define CFRAME_SHIFT_MULTRES 0
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#else
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#define CFRAME_OFS_PREV (4*8)
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#if LJ_GC64
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#define CFRAME_OFS_PC (3*8)
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#define CFRAME_OFS_L (2*8)
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#define CFRAME_OFS_ERRF (3*4)
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#define CFRAME_OFS_NRES (2*4)
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#define CFRAME_OFS_MULTRES (0*4)
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#else
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#define CFRAME_OFS_PC (7*4)
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#define CFRAME_OFS_L (6*4)
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#define CFRAME_OFS_ERRF (5*4)
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#define CFRAME_OFS_NRES (4*4)
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#define CFRAME_OFS_MULTRES (1*4)
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#endif
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#if LJ_NO_UNWIND
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#define CFRAME_SIZE (12*8)
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#else
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#define CFRAME_SIZE (10*8)
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#endif
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#define CFRAME_SIZE_JIT (CFRAME_SIZE + 16)
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#define CFRAME_SHIFT_MULTRES 0
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#endif
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#elif LJ_TARGET_ARM
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#define CFRAME_OFS_ERRF 24
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#define CFRAME_OFS_NRES 20
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#define CFRAME_OFS_PREV 16
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#define CFRAME_OFS_L 12
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#define CFRAME_OFS_PC 8
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#define CFRAME_OFS_MULTRES 4
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#if LJ_ARCH_HASFPU
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#define CFRAME_SIZE 128
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#else
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#define CFRAME_SIZE 64
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#endif
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#define CFRAME_SHIFT_MULTRES 3
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#elif LJ_TARGET_ARM64
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#define CFRAME_OFS_ERRF 196
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#define CFRAME_OFS_NRES 200
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#define CFRAME_OFS_PREV 160
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#define CFRAME_OFS_L 176
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#define CFRAME_OFS_PC 168
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#define CFRAME_OFS_MULTRES 192
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#define CFRAME_SIZE 208
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#define CFRAME_SHIFT_MULTRES 3
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#elif LJ_TARGET_PPC
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#if LJ_TARGET_XBOX360
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#define CFRAME_OFS_ERRF 424
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#define CFRAME_OFS_NRES 420
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#define CFRAME_OFS_PREV 400
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#define CFRAME_OFS_L 416
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#define CFRAME_OFS_PC 412
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#define CFRAME_OFS_MULTRES 408
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#define CFRAME_SIZE 384
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#define CFRAME_SHIFT_MULTRES 3
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#elif LJ_ARCH_PPC32ON64
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#define CFRAME_OFS_ERRF 472
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#define CFRAME_OFS_NRES 468
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#define CFRAME_OFS_PREV 448
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#define CFRAME_OFS_L 464
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#define CFRAME_OFS_PC 460
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#define CFRAME_OFS_MULTRES 456
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#define CFRAME_SIZE 400
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#define CFRAME_SHIFT_MULTRES 3
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#else
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#define CFRAME_OFS_ERRF 48
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#define CFRAME_OFS_NRES 44
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#define CFRAME_OFS_PREV 40
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#define CFRAME_OFS_L 36
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#define CFRAME_OFS_PC 32
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#define CFRAME_OFS_MULTRES 28
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#define CFRAME_SIZE 272
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#define CFRAME_SHIFT_MULTRES 3
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#endif
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#elif LJ_TARGET_MIPS32
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#if LJ_ARCH_HASFPU
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#define CFRAME_OFS_ERRF 124
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#define CFRAME_OFS_NRES 120
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#define CFRAME_OFS_PREV 116
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#define CFRAME_OFS_L 112
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#define CFRAME_SIZE 112
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#else
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#define CFRAME_OFS_ERRF 76
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#define CFRAME_OFS_NRES 72
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#define CFRAME_OFS_PREV 68
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#define CFRAME_OFS_L 64
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#define CFRAME_SIZE 64
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#endif
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#define CFRAME_OFS_PC 20
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#define CFRAME_OFS_MULTRES 16
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#define CFRAME_SHIFT_MULTRES 3
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#elif LJ_TARGET_MIPS64
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#if LJ_ARCH_HASFPU
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#define CFRAME_OFS_ERRF 188
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#define CFRAME_OFS_NRES 184
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#define CFRAME_OFS_PREV 176
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#define CFRAME_OFS_L 168
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#define CFRAME_OFS_PC 160
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#define CFRAME_SIZE 192
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#else
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#define CFRAME_OFS_ERRF 124
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#define CFRAME_OFS_NRES 120
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#define CFRAME_OFS_PREV 112
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#define CFRAME_OFS_L 104
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#define CFRAME_OFS_PC 96
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#define CFRAME_SIZE 128
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#endif
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#define CFRAME_OFS_MULTRES 0
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#define CFRAME_SHIFT_MULTRES 3
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#elif LJ_TARGET_S390X
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#define CFRAME_OFS_ERRF 280
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#define CFRAME_OFS_NRES 272
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#define CFRAME_OFS_PREV 264
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#define CFRAME_OFS_L 256
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#define CFRAME_OFS_PC 168
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#define CFRAME_OFS_MULTRES 160
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#define CFRAME_SIZE 240
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#define CFRAME_SHIFT_MULTRES 3
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#else
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#error "Missing CFRAME_* definitions for this architecture"
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#endif
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#ifndef CFRAME_SIZE_JIT
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#define CFRAME_SIZE_JIT CFRAME_SIZE
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#endif
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#define CFRAME_RESUME 1
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#define CFRAME_UNWIND_FF 2 /* Only used in unwinder. */
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#define CFRAME_RAWMASK (~(intptr_t)(CFRAME_RESUME|CFRAME_UNWIND_FF))
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#define cframe_errfunc(cf) (*(int32_t *)(((char *)(cf))+CFRAME_OFS_ERRF))
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#define cframe_nres(cf) (*(int32_t *)(((char *)(cf))+CFRAME_OFS_NRES))
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#define cframe_prev(cf) (*(void **)(((char *)(cf))+CFRAME_OFS_PREV))
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#define cframe_multres(cf) (*(uint32_t *)(((char *)(cf))+CFRAME_OFS_MULTRES))
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#define cframe_multres_n(cf) (cframe_multres((cf)) >> CFRAME_SHIFT_MULTRES)
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#define cframe_L(cf) \
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(&gcref(*(GCRef *)(((char *)(cf))+CFRAME_OFS_L))->th)
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#define cframe_pc(cf) \
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(mref(*(MRef *)(((char *)(cf))+CFRAME_OFS_PC), const BCIns))
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#define setcframe_L(cf, L) \
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(setmref(*(MRef *)(((char *)(cf))+CFRAME_OFS_L), (L)))
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#define setcframe_pc(cf, pc) \
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(setmref(*(MRef *)(((char *)(cf))+CFRAME_OFS_PC), (pc)))
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#define cframe_canyield(cf) ((intptr_t)(cf) & CFRAME_RESUME)
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#define cframe_unwind_ff(cf) ((intptr_t)(cf) & CFRAME_UNWIND_FF)
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#define cframe_raw(cf) ((void *)((intptr_t)(cf) & CFRAME_RAWMASK))
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#define cframe_Lpc(L) cframe_pc(cframe_raw(L->cframe))
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#endif
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