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Fix 32 bit address overflow 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5019 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-08-17 16:13:02 +00:00
parent bffe143153
commit 90cbed4656
1 changed files with 19 additions and 0 deletions
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19
tcg/sparc/tcg-target.c
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@ -625,8 +625,18 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
/* ld [arg1 + x], arg1 */
tcg_out_ldst(s, arg1, arg1, offsetof(CPUTLBEntry, addend) -
offsetof(CPUTLBEntry, addr_read), HOST_LD_OP);
#if TARGET_LONG_BITS == 32
/* and addr_reg, x, arg0 */
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_I5, 0xffffffff);
tcg_out_arith(s, arg0, addr_reg, TCG_REG_I5, ARITH_AND);
/* add arg0, arg1, arg0 */
tcg_out_arith(s, arg0, arg0, arg1, ARITH_ADD);
#else
/* add addr_reg, arg1, arg0 */
tcg_out_arith(s, arg0, addr_reg, arg1, ARITH_ADD);
#endif
#else
arg0 = addr_reg;
#endif
@ -785,8 +795,17 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
tcg_out_ldst(s, arg1, arg1, offsetof(CPUTLBEntry, addend) -
offsetof(CPUTLBEntry, addr_write), HOST_LD_OP);
#if TARGET_LONG_BITS == 32
/* and addr_reg, x, arg0 */
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_I5, 0xffffffff);
tcg_out_arith(s, arg0, addr_reg, TCG_REG_I5, ARITH_AND);
/* add arg0, arg1, arg0 */
tcg_out_arith(s, arg0, arg0, arg1, ARITH_ADD);
#else
/* add addr_reg, arg1, arg0 */
tcg_out_arith(s, arg0, addr_reg, arg1, ARITH_ADD);
#endif
#else
arg0 = addr_reg;
#endif