[PATCH v4 58/71] tcg/tci: Reserve r13 for a temporary

[Richard Henderson <richard.henderson@linaro.org>]

We're about to adjust the offset range on host memory ops,
and the format of branches.  Both will require a temporary.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/tci/tcg-target.h     | 1 +
 tcg/tci/tcg-target.c.inc | 1 +
 2 files changed, 2 insertions(+)

diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h
index 4df10e2e83..1558a6e44e 100644
--- a/tcg/tci/tcg-target.h
+++ b/tcg/tci/tcg-target.h
@@ -155,6 +155,7 @@ typedef enum {
     TCG_REG_R14,
     TCG_REG_R15,
 
+    TCG_REG_TMP = TCG_REG_R13,
     TCG_AREG0 = TCG_REG_R14,
     TCG_REG_CALL_STACK = TCG_REG_R15,
 } TCGReg;
diff --git a/tcg/tci/tcg-target.c.inc b/tcg/tci/tcg-target.c.inc
index c2d2bd24d7..b29e75425d 100644
--- a/tcg/tci/tcg-target.c.inc
+++ b/tcg/tci/tcg-target.c.inc
@@ -829,6 +829,7 @@ static void tcg_target_init(TCGContext *s)
         MAKE_64BIT_MASK(TCG_REG_R0, 64 / TCG_TARGET_REG_BITS);
 
     s->reserved_regs = 0;
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP);
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
 
     /* The call arguments come first, followed by the temp storage. */
-- 
2.25.1