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Use a different marker for hot calls.

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This commit is contained in:
Mike Pall 2010-02-15 18:04:06 +01:00
parent 3452bfcf8c
commit e1905f498a
5 changed files with 1101 additions and 1085 deletions
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690
src/buildvm_x64.h
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794
src/buildvm_x64win.h
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9
src/buildvm_x86.dasc
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@ -2518,14 +2518,15 @@ static void build_subroutines(BuildCtx *ctx, int cmov, int sse)
#endif
|
|->vm_callhook: // Dispatch target for call hooks.
| mov SAVE_PC, PC
#if LJ_HASJIT
| mov aword [DISPATCH+DISPATCH_J(L)], 0 // Marker for call hook.
| jmp >1
#endif
|
|->vm_hotcall: // Hot call counter underflow.
#if LJ_HASJIT
| mov aword [DISPATCH+DISPATCH_J(L)], L:RBa
| mov SAVE_PC, PC
| or PC, 1 // Marker for hot call.
|1:
#endif
| lea RD, [BASE+NARGS:RD*8-8]
@ -2534,10 +2535,12 @@ static void build_subroutines(BuildCtx *ctx, int cmov, int sse)
| mov L:RB->top, RD
| mov FCARG2, PC
| mov FCARG1, L:RB
| mov SAVE_PC, PC
| call extern lj_dispatch_call@8 // (lua_State *L, const BCIns *pc)
| // ASMFunction returned in eax/rax (RDa).
| mov SAVE_PC, 0 // Invalidate for subsequent line hook.
#if LJ_HASJIT
| and PC, -2
#endif
| mov BASE, L:RB->base
| mov RAa, RDa
| mov RD, L:RB->top

688
src/buildvm_x86.h
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5
src/lj_dispatch.c
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@ -409,8 +409,9 @@ ASMFunction LJ_FASTCALL lj_dispatch_call(lua_State *L, const BCIns *pc)
#endif
call_init(L, fn);
#if LJ_HASJIT
if (J->L) { /* Marker for hot call. */
lj_trace_hot(J, pc);
if ((uintptr_t)pc & 1) { /* Marker for hot call. */
J->L = L;
lj_trace_hot(J, (const BCIns *)((uintptr_t)pc & ~(uintptr_t)1));
goto out;
}
#endif