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PPC: Add register assignments and type definitions.

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This commit is contained in:
Mike Pall 2010-08-31 00:04:32 +02:00
parent e1efd0d871
commit c7f91f8cd1
2 changed files with 75 additions and 0 deletions
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62
src/buildvm_ppc.dasc
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@ -14,8 +14,55 @@
|.error "No support for plain PowerPC CPUs (yet)"
|.endif
|
|// Note: The ragged indentation of the instructions is intentional.
|// The starting columns indicate data dependencies.
|
|//-----------------------------------------------------------------------
|
|// Fixed register assignments for the interpreter.
|// Don't use: r1 = sp, r2 and r13 = reserved and/or small data area ptr
|
|// The following must be C callee-save (but BASE is often refetched).
|.define BASE, r14 // Base of current Lua stack frame.
|.define KBASE, r15 // Constants of current Lua function.
|.define PC, r16 // Next PC.
|.define DISPATCH, r17 // Opcode dispatch table.
|.define LREG, r18 // Register holding lua_State (also in SAVE_L).
|
|// Constants for vectorized type-comparisons (hi+low GPR). C callee-save.
|.define TISNUM, r21
|.if SPE
|.define TISSTR, r22
|.define TISTAB, r23
|.define TISFUNC, r24
|.define TISNIL, r25
|.endif
|
|// The following temporaries are not saved across C calls, except for RA.
|.define RA, r19 // Callee-save.
|.define RB, r10
|.define RC, r11
|.define RD, r12
|.define INS, r7 // Overlaps CARG5.
|
|.define TMP0, r0
|.define TMP1, r8
|.define TMP2, r9
|.define TMP3, r6 // Overlaps CARG4.
|
|// Saved temporaries.
|.define SAVE0, r20
|
|// Calling conventions.
|.define CARG1, r3
|.define CARG2, r4
|.define CARG3, r5
|.define CARG4, r6 // Overlaps TMP3.
|.define CARG5, r7 // Overlaps INS.
|
|.define CRET1, r3
|.define CRET2, r4
|
|// Stack layout while in interpreter. Must match with lj_frame.h.
|.if SPE
|.define SAVE_LR, 180(sp)
@ -70,6 +117,21 @@
| addi sp, sp, CFRAME_SPACE
|.endmacro
|
|// Type definitions. Some of these are only used for documentation.
|.type L, lua_State, LREG
|.type GL, global_State
|.type TVALUE, TValue
|.type GCOBJ, GCobj
|.type STR, GCstr
|.type TAB, GCtab
|.type LFUNC, GCfuncL
|.type CFUNC, GCfuncC
|.type PROTO, GCproto
|.type UPVAL, GCupval
|.type NODE, Node
|.type NARGS8, int
|.type TRACE, GCtrace
|
|//-----------------------------------------------------------------------
|
|// Trap for not-yet-implemented parts.

13
src/buildvm_ppcspe.h
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@ -748,6 +748,19 @@ static const char *const globnames[] = {
static const char *const extnames[] = {
(const char *)0
};
#define Dt1(_V) (int)(ptrdiff_t)&(((lua_State *)0)_V)
#define Dt2(_V) (int)(ptrdiff_t)&(((global_State *)0)_V)
#define Dt3(_V) (int)(ptrdiff_t)&(((TValue *)0)_V)
#define Dt4(_V) (int)(ptrdiff_t)&(((GCobj *)0)_V)
#define Dt5(_V) (int)(ptrdiff_t)&(((GCstr *)0)_V)
#define Dt6(_V) (int)(ptrdiff_t)&(((GCtab *)0)_V)
#define Dt7(_V) (int)(ptrdiff_t)&(((GCfuncL *)0)_V)
#define Dt8(_V) (int)(ptrdiff_t)&(((GCfuncC *)0)_V)
#define Dt9(_V) (int)(ptrdiff_t)&(((GCproto *)0)_V)
#define DtA(_V) (int)(ptrdiff_t)&(((GCupval *)0)_V)
#define DtB(_V) (int)(ptrdiff_t)&(((Node *)0)_V)
#define DtC(_V) (int)(ptrdiff_t)&(((int *)0)_V)
#define DtD(_V) (int)(ptrdiff_t)&(((GCtrace *)0)_V)
#define DISPATCH_GL(field) (GG_DISP2G + (int)offsetof(global_State, field))
#define DISPATCH_J(field) (GG_DISP2J + (int)offsetof(jit_State, field))
#define PC2PROTO(field) ((int)offsetof(GCproto, field)-(int)sizeof(GCproto))