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Add the jit_callee_save_p interface and extra register definitions.

* check/self.c, check/self.ok: New files implementing simple
	consistency check assertions. At first validating some macros
	that use values from different sources agree.

	* check/Makefile.am: Update for the new test case.

	* include/lightning.h,  lib/lightning.c: Add the new
	jit_callee_save_p() call, that is intended to be used when
	writing complex code using lightning, so that one does not
	need to verify what backend is being used, or have access to
	private data, to query if a register is callee save or not;
	on several backends the scratch registers are actually callee
	save.

	* include/lightning/jit_aarch64.h, include/lightning/jit_arm.h,
	include/lightning/jit_hppa.h, include/lightning/jit_mips.h,
	include/lightning/jit_ppc.h, include/lightning/jit_sparc.h,
	include/lightning/jit_x86.h: Add an explicit definition for
	JIT_R3-JIT_Rn, JIT_V3-JIT_Vn and JIT_F6-JIT_Fn when applicable.
	This allows one to write code based on "#if defined(JIT_XN)"
	and therefore, not need to check what is the current backend
	or have access to private data structures. This is particularly
	useful when writing virtual machines with several specialized,
	global registers.

	* lib/jit_ia64.c: Properly flag the callee save general
	purpose registers as such, so that jit_callee_save_p() works
	as intended.
This commit is contained in:
pcpa 2013-09-10 21:41:49 -03:00
parent 15a3ec2567
commit a62f405751
14 changed files with 228 additions and 98 deletions

View file

@ -33,18 +33,27 @@ typedef enum {
_R1, /* ADDIL implicit target */
_R2, /* B,L implicit target */
#define jit_r_num() 4
#define jit_r(n) ((n) < 4 ? _R4 + (n) : _R10 + (n))
#define jit_v_num() 4
#define jit_v(n) ((n) < 4 ? _R7 + (n) : _R11 + (n))
#define jit_r(n) ((n) < 3 ? _R4 + (n) : _R10 + (n) - 3)
#define jit_v_num() 11
#define jit_v(n) ((n) < 3 ? _R7 + (n) : _R11 + (n) - 3)
#define jit_f_num() 8
#define jit_f(n) (_F12 - (n))
#define JIT_FP _R3
#define JIT_R0 _R4
#define JIT_R1 _R5
#define JIT_R2 _R6
#define JIT_R3 _R10
#define JIT_V0 _R7
#define JIT_V1 _R8
#define JIT_V2 _R9
#define JIT_V3 _R11
#define JIT_V4 _R12
#define JIT_V5 _R13
#define JIT_V6 _R14
#define JIT_V7 _R15
#define JIT_V8 _R16
#define JIT_V9 _R17
#define JIT_V10 _R18
_R3,
_R19,
_R20,
@ -80,6 +89,10 @@ typedef enum {
#define JIT_F3 _F15
#define JIT_F4 _F16
#define JIT_F5 _F17
#define JIT_F6 _F18
#define JIT_F7 _F19
#define JIT_F8 _F20
#define JIT_F9 _F21
/* Caller Saves */
_F31,
_F30,