tcg/mips: don't use global pointer

Don't use the global pointer in TCG, in case helpers try access global
variables.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

diff --git a/tcg/mips/tcg-target.c b/tcg/mips/tcg-target.c
index 8b38f988d8c4d0a661d5711dfe7d44a07fe67efc..0ea6a76fb7593e3f1f6512d6381a4920fac36c7e 100644 (file)
--- a/tcg/mips/tcg-target.c
+++ b/tcg/mips/tcg-target.c
@@ -1529,7 +1529,6 @@ static int tcg_target_callee_save_regs[] = {
     TCG_REG_S5,
     TCG_REG_S6,
     TCG_REG_S7,
-    TCG_REG_GP,
     TCG_REG_FP,
     TCG_REG_RA,       /* should be last for ABI compliance */
 };
@@ -1595,6 +1594,7 @@ static void tcg_target_init(TCGContext *s)
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_T0);   /* internal use */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_RA);   /* return address */
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP);   /* stack pointer */
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_GP);   /* global pointer */
 
     tcg_add_target_add_op_defs(mips_op_defs);
     tcg_set_frame(s, TCG_AREG0, offsetof(CPUArchState, temp_buf),