@@ -1159,7 +1159,7 @@ static ssize_t rtl8139_do_receive(NetClientState *nc, const uint8_t *buf, size_t
s->IntrStatus |= RxOverflow;
++s->RxMissed;
rtl8139_update_irq(s);
- return size_;
+ return 0;
}
packet_header |= RxStatusOK;
@@ -56,6 +56,12 @@ static const int tcg_target_call_oarg_regs[1] = {
#define TCG_REG_TMP TCG_REG_X30
#ifndef CONFIG_SOFTMMU
+/* Note that XZR cannot be encoded in the address base register slot,
+ as that actaully encodes SP. So if we need to zero-extend the guest
+ address, via the address index register slot, we need to load even
+ a zero guest base into a register. */
+#define USE_GUEST_BASE (GUEST_BASE != 0 || TARGET_LONG_BITS == 32)
+
# ifdef CONFIG_USE_GUEST_BASE
# define TCG_REG_GUEST_BASE TCG_REG_X28
# else
@@ -1216,9 +1222,13 @@ static void tcg_out_qemu_ld(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
add_qemu_ldst_label(s, true, oi, ext, data_reg, addr_reg,
s->code_ptr, label_ptr);
#else /* !CONFIG_SOFTMMU */
- tcg_out_qemu_ld_direct(s, memop, ext, data_reg,
- GUEST_BASE ? TCG_REG_GUEST_BASE : TCG_REG_XZR,
- otype, addr_reg);
+ if (USE_GUEST_BASE) {
+ tcg_out_qemu_ld_direct(s, memop, ext, data_reg,
+ TCG_REG_GUEST_BASE, otype, addr_reg);
+ } else {
+ tcg_out_qemu_ld_direct(s, memop, ext, data_reg,
+ addr_reg, TCG_TYPE_I64, TCG_REG_XZR);
+ }
#endif /* CONFIG_SOFTMMU */
}
@@ -1238,9 +1248,13 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
add_qemu_ldst_label(s, false, oi, s_bits == MO_64, data_reg, addr_reg,
s->code_ptr, label_ptr);
#else /* !CONFIG_SOFTMMU */
- tcg_out_qemu_st_direct(s, memop, data_reg,
- GUEST_BASE ? TCG_REG_GUEST_BASE : TCG_REG_XZR,
- otype, addr_reg);
+ if (USE_GUEST_BASE) {
+ tcg_out_qemu_st_direct(s, memop, data_reg,
+ TCG_REG_GUEST_BASE, otype, addr_reg);
+ } else {
+ tcg_out_qemu_st_direct(s, memop, data_reg,
+ addr_reg, TCG_TYPE_I64, TCG_REG_XZR);
+ }
#endif /* CONFIG_SOFTMMU */
}
@@ -1795,7 +1809,7 @@ static void tcg_target_qemu_prologue(TCGContext *s)
CPU_TEMP_BUF_NLONGS * sizeof(long));
#if defined(CONFIG_USE_GUEST_BASE)
- if (GUEST_BASE) {
+ if (USE_GUEST_BASE) {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_GUEST_BASE, GUEST_BASE);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_GUEST_BASE);
}