@@ -1,5 +1,6 @@
obj-$(CONFIG_SOFTMMU) += tcg-all.o
obj-$(CONFIG_SOFTMMU) += cputlb.o
+obj-$(CONFIG_SOFTMMU) += softmmu.o
obj-y += tcg-runtime.o tcg-runtime-gvec.o
obj-y += cpu-exec.o cpu-exec-common.o translate-all.o
obj-y += translator.o
@@ -1032,9 +1032,6 @@ static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr,
#define MMUSUFFIX _mmu
-#define DATA_SIZE 1
-#include "softmmu_template.h"
-
#define DATA_SIZE 2
#include "softmmu_template.h"
@@ -1109,9 +1106,6 @@ static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr,
#define GETPC() ((uintptr_t)0)
#define SOFTMMU_CODE_ACCESS
-#define DATA_SIZE 1
-#include "softmmu_template.h"
-
#define DATA_SIZE 2
#include "softmmu_template.h"
new file mode 100644
@@ -0,0 +1,255 @@
+/*
+ * Software MMU support
+ *
+ * Originally this was a set of generated helpers using macro magic.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "cputlb.h"
+#include "exec/exec-all.h"
+#include "tcg/tcg.h"
+
+/* Macro to call the above, with local variables from the use context. */
+#define VICTIM_TLB_HIT(TY, ADDR) \
+ victim_tlb_hit(env, mmu_idx, index, offsetof(CPUTLBEntry, TY), \
+ (ADDR) & TARGET_PAGE_MASK)
+
+/* For the benefit of TCG generated code, we want to avoid the complication
+ of ABI-specific return type promotion and always return a value extended
+ to the register size of the host. This is tcg_target_long, except in the
+ case of a 32-bit host and 64-bit data, and for that we always have
+ uint64_t. Don't bother with this widened value for SOFTMMU_CODE_ACCESS. */
+static inline uint8_t io_readb(CPUArchState *env,
+ size_t mmu_idx, size_t index,
+ target_ulong addr,
+ uintptr_t retaddr)
+{
+ CPUIOTLBEntry *iotlbentry = &env->iotlb[mmu_idx][index];
+ return io_readx(env, iotlbentry, mmu_idx, addr, retaddr, 1);
+}
+
+
+tcg_target_ulong helper_ret_ldub_mmu(CPUArchState *env, target_ulong addr,
+ TCGMemOpIdx oi, uintptr_t retaddr)
+{
+ unsigned mmu_idx = get_mmuidx(oi);
+ int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
+ target_ulong tlb_addr = env->tlb_table[mmu_idx][index].addr_read;
+ unsigned a_bits = get_alignment_bits(get_memop(oi));
+ uintptr_t haddr;
+ uint8_t res;
+
+ if (addr & ((1 << a_bits) - 1)) {
+ cpu_unaligned_access(ENV_GET_CPU(env), addr, MMU_DATA_LOAD,
+ mmu_idx, retaddr);
+ }
+
+ /* If the TLB entry is for a different page, reload and try again. */
+ if ((addr & TARGET_PAGE_MASK)
+ != (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
+ if (!VICTIM_TLB_HIT(addr_read, addr)) {
+ tlb_fill(ENV_GET_CPU(env), addr, 1, MMU_DATA_LOAD,
+ mmu_idx, retaddr);
+ }
+ tlb_addr = env->tlb_table[mmu_idx][index].addr_read;
+ }
+
+ /* Handle an IO access. */
+ if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
+ if ((addr & (1 - 1)) != 0) {
+ goto do_unaligned_access;
+ }
+
+ /* ??? Note that the io helpers always read data in the target
+ byte ordering. We should push the LE/BE request down into io. */
+ res = io_readb(env, mmu_idx, index, addr, retaddr);
+ res = (res);
+ return res;
+ }
+
+ /* Handle slow unaligned access (it spans two pages or IO). */
+ if (1 > 1
+ && unlikely((addr & ~TARGET_PAGE_MASK) + 1 - 1
+ >= TARGET_PAGE_SIZE)) {
+ target_ulong addr1, addr2;
+ uint8_t res1, res2;
+ unsigned shift;
+ do_unaligned_access:
+ addr1 = addr & ~(1 - 1);
+ addr2 = addr1 + 1;
+ res1 = helper_ret_ldub_mmu(env, addr1, oi, retaddr);
+ res2 = helper_ret_ldub_mmu(env, addr2, oi, retaddr);
+ shift = (addr & (1 - 1)) * 8;
+
+ /* Little-endian combine. */
+ res = (res1 >> shift) | (res2 << ((1 * 8) - shift));
+ return res;
+ }
+
+ haddr = addr + env->tlb_table[mmu_idx][index].addend;
+
+ res = ldub_p((uint8_t *)haddr);
+
+
+
+ return res;
+}
+/* Provide signed versions of the load routines as well. We can of course
+ avoid this for 64-bit data, or for 32-bit data on 32-bit host. */
+static inline void io_writeb(CPUArchState *env,
+ size_t mmu_idx, size_t index,
+ uint8_t val,
+ target_ulong addr,
+ uintptr_t retaddr)
+{
+ CPUIOTLBEntry *iotlbentry = &env->iotlb[mmu_idx][index];
+ return io_writex(env, iotlbentry, mmu_idx, val, addr, retaddr, 1);
+}
+
+void helper_ret_stb_mmu(CPUArchState *env, target_ulong addr, uint8_t val,
+ TCGMemOpIdx oi, uintptr_t retaddr)
+{
+ unsigned mmu_idx = get_mmuidx(oi);
+ int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
+ target_ulong tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
+ unsigned a_bits = get_alignment_bits(get_memop(oi));
+ uintptr_t haddr;
+
+ if (addr & ((1 << a_bits) - 1)) {
+ cpu_unaligned_access(ENV_GET_CPU(env), addr, MMU_DATA_STORE,
+ mmu_idx, retaddr);
+ }
+
+ /* If the TLB entry is for a different page, reload and try again. */
+ if ((addr & TARGET_PAGE_MASK)
+ != (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
+ if (!VICTIM_TLB_HIT(addr_write, addr)) {
+ tlb_fill(ENV_GET_CPU(env), addr, 1, MMU_DATA_STORE,
+ mmu_idx, retaddr);
+ }
+ tlb_addr = env->tlb_table[mmu_idx][index].addr_write & ~TLB_INVALID_MASK;
+ }
+
+ /* Handle an IO access. */
+ if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
+ if ((addr & (1 - 1)) != 0) {
+ goto do_unaligned_access;
+ }
+
+ /* ??? Note that the io helpers always read data in the target
+ byte ordering. We should push the LE/BE request down into io. */
+ val = (val);
+ io_writeb(env, mmu_idx, index, val, addr, retaddr);
+ return;
+ }
+
+ /* Handle slow unaligned access (it spans two pages or IO). */
+ if (1 > 1
+ && unlikely((addr & ~TARGET_PAGE_MASK) + 1 - 1
+ >= TARGET_PAGE_SIZE)) {
+ int i, index2;
+ target_ulong page2, tlb_addr2;
+ do_unaligned_access:
+ /* Ensure the second page is in the TLB. Note that the first page
+ is already guaranteed to be filled, and that the second page
+ cannot evict the first. */
+ page2 = (addr + 1) & TARGET_PAGE_MASK;
+ index2 = (page2 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
+ tlb_addr2 = env->tlb_table[mmu_idx][index2].addr_write;
+ if (page2 != (tlb_addr2 & (TARGET_PAGE_MASK | TLB_INVALID_MASK))
+ && !VICTIM_TLB_HIT(addr_write, page2)) {
+ tlb_fill(ENV_GET_CPU(env), page2, 1, MMU_DATA_STORE,
+ mmu_idx, retaddr);
+ }
+
+ /* XXX: not efficient, but simple. */
+ /* This loop must go in the forward direction to avoid issues
+ with self-modifying code in Windows 64-bit. */
+ for (i = 0; i < 1; ++i) {
+ /* Little-endian extract. */
+ uint8_t val8 = val >> (i * 8);
+ helper_ret_stb_mmu(env, addr + i, val8,
+ oi, retaddr);
+ }
+ return;
+ }
+
+ haddr = addr + env->tlb_table[mmu_idx][index].addend;
+
+ stb_p((uint8_t *)haddr, val);
+
+
+
+}
+
+/* For the benefit of TCG generated code, we want to avoid the complication
+ of ABI-specific return type promotion and always return a value extended
+ to the register size of the host. This is tcg_target_long, except in the
+ case of a 32-bit host and 64-bit data, and for that we always have
+ uint64_t. Don't bother with this widened value for SOFTMMU_CODE_ACCESS. */
+uint8_t helper_ret_ldb_cmmu(CPUArchState *env, target_ulong addr,
+ TCGMemOpIdx oi, uintptr_t retaddr)
+{
+ unsigned mmu_idx = get_mmuidx(oi);
+ int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
+ target_ulong tlb_addr = env->tlb_table[mmu_idx][index].addr_code;
+ unsigned a_bits = get_alignment_bits(get_memop(oi));
+ uintptr_t haddr;
+ uint8_t res;
+
+ if (addr & ((1 << a_bits) - 1)) {
+ cpu_unaligned_access(ENV_GET_CPU(env), addr, MMU_INST_FETCH,
+ mmu_idx, retaddr);
+ }
+
+ /* If the TLB entry is for a different page, reload and try again. */
+ if ((addr & TARGET_PAGE_MASK)
+ != (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
+ if (!VICTIM_TLB_HIT(addr_code, addr)) {
+ tlb_fill(ENV_GET_CPU(env), addr, 1, MMU_INST_FETCH,
+ mmu_idx, retaddr);
+ }
+ tlb_addr = env->tlb_table[mmu_idx][index].addr_code;
+ }
+
+ /* Handle an IO access. */
+ if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
+ if ((addr & (1 - 1)) != 0) {
+ goto do_unaligned_access;
+ }
+
+ /* ??? Note that the io helpers always read data in the target
+ byte ordering. We should push the LE/BE request down into io. */
+ res = io_readb(env, mmu_idx, index, addr, retaddr);
+ res = (res);
+ return res;
+ }
+
+ /* Handle slow unaligned access (it spans two pages or IO). */
+ if (1 > 1
+ && unlikely((addr & ~TARGET_PAGE_MASK) + 1 - 1
+ >= TARGET_PAGE_SIZE)) {
+ target_ulong addr1, addr2;
+ uint8_t res1, res2;
+ unsigned shift;
+ do_unaligned_access:
+ addr1 = addr & ~(1 - 1);
+ addr2 = addr1 + 1;
+ res1 = helper_ret_ldb_cmmu(env, addr1, oi, retaddr);
+ res2 = helper_ret_ldb_cmmu(env, addr2, oi, retaddr);
+ shift = (addr & (1 - 1)) * 8;
+
+ /* Little-endian combine. */
+ res = (res1 >> shift) | (res2 << ((1 * 8) - shift));
+ return res;
+ }
+
+ haddr = addr + env->tlb_table[mmu_idx][index].addend;
+
+ res = ldub_p((uint8_t *)haddr);
+
+
+
+ return res;
+}
Expand the results of softmmu-template.h with DATA_SIZE 1. Currently there are no changes and areas will get dead-coded away. This is going to form the basis of the re-factoring. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> --- accel/tcg/Makefile.objs | 1 + accel/tcg/cputlb.c | 6 - accel/tcg/softmmu.c | 255 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 256 insertions(+), 6 deletions(-) create mode 100644 accel/tcg/softmmu.c -- 2.17.0