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tcg-ia64: Move AREG0 to R32

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Since the move away from the global areg0, we're no longer globally
reserving areg0.  Which means our use of R7 clobbers a call-saved
register.  Shift areg0 into the windowed registers.  Indeed, choose
the incoming parameter register that it comes to us by.

This requires moving the register holding the return address elsewhere.
Choose R33 for tidiness.

Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-09-05 14:45:54 -04:00
parent 6d264b38fc
commit d15de15ca0
2 changed files with 8 additions and 9 deletions
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4
tcg/ia64/tcg-target.h
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@ -92,6 +92,8 @@ typedef enum {
TCG_REG_R61,
TCG_REG_R62,
TCG_REG_R63,
TCG_AREG0 = TCG_REG_R32,
} TCGReg;
#define TCG_CT_CONST_ZERO 0x100
@ -162,8 +164,6 @@ typedef enum {
#define TCG_TARGET_HAS_not_i32 0 /* xor r1, -1, r3 */
#define TCG_TARGET_HAS_not_i64 0 /* xor r1, -1, r3 */
#define TCG_AREG0 TCG_REG_R7
static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
{
start = start & ~(32UL - 1UL);