Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

There was a potential problem here with an ILP32 host
with 64 host registers.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

It's not even clear what the interface REG and VAL32 were supposed to mean.
All uses had REG = 0 and VAL32 was the bitset assigned to the destination.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20170911213328.9701-4-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

This fixes building for ppc64 on ppc32 (changed in 5964fca8):

tcg/ppc/tcg-target.inc.c: In function 'tb_target_set_jmp_target':
include/qemu/compiler.h:86:30: error: static assertion failed: \
  "not expecting: sizeof(*(uint64_t *)jmp_addr) > ATOMIC_REG_SIZE"
	QEMU_BUILD_BUG_ON(sizeof(*ptr) > ATOMIC_REG_SIZE); \
	^
tcg/ppc/tcg-target.inc.c:1377:9: note: in expansion of macro 'atomic_set'
	atomic_set((uint64_t *)jmp_addr, pair);
	^

Suggested-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20170911204936.5020-1-f4bug@amsat.org>
[rth: Added commentary requested by pmm.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

changed in 659ef5cb, this fixes building with --enable-tcg-interpreter:

/home/travis/build/qemu/qemu/tcg/tcg.c:116:14: error: ‘tcg_out_ldst_finalize’ used but never defined [-Werror]
 static bool tcg_out_ldst_finalize(TCGContext *s);
              ^

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20170911022839.23231-1-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

At this point the conversion is a wash.  Loading of TB+ofs is
smaller, but the actual return address from exit_tb is larger.
There are a few more insns required to transition between TBs.

But the expectation is that accesses to the constant pool will
on the whole be smaller.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

We'll want this for tcg_out_nop_fill.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Move constants before all of the functions.
Move tcg_out_<format> functions before all
of the others.  No functional change.

Signed-off-by: Richard Henderson <rth@twiddle.net>

We are not going to use ldrd for loading the comparator
for 32-bit guests, so don't limit cmp_off to 8 bits then.
This eliminates one insn in the tlb load for some guests.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Use UBFX to avoid limitation on CPU_TLB_BITS.  Since we're dropping
the initial shift, we need to replace the page masking.  We can use
MOVW+BIC to do this without shifting.  The result is the same size
as the armv6 path with one less conditional instruction.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Also use CHI/CGHI for 16-bit signed constants.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Split out maybe_out_small_movi for use with other operations
that want to add to the constant pool.

Signed-off-by: Richard Henderson <rth@twiddle.net>

We were passing in -2 instead of +2, but then ignoring
the actual contents of addend in the calculation.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>

Already it saves 2 bytes per call, but also the constant pool
entry may well be shared across multiple calls.

Signed-off-by: Richard Henderson <rth@twiddle.net>

A new shared header tcg-pool.inc.c adds new_pool_label,
for registering a tcg_target_ulong to be emitted after
the generated code, plus relocation data to install a
pointer to the data.

A new pointer is added to the TCGContext, so that we
dump the constant pool as data, not code.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Dispense with TCGBackendData, as it has never been used for more than
holding a single pointer.  Use a define in the cpu/tcg-target.h to
signal requirement for TCGLabelQemuLdst, so that we can drop the no-op
tcg-be-null.h stubs.  Rename tcg-be-ldst.h to tcg-ldst.inc.c.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>

Replace the USE_DIRECT_JUMP ifdef with a TCG_TARGET_HAS_direct_jump
boolean test.  Replace the tb_set_jmp_target1 ifdef with an unconditional
function tb_target_set_jmp_target.

While we're touching all backends, add a parameter for tb->tc_ptr;
we're going to need it shortly for some backends.

Move tb_set_jmp_target and tb_add_jump from exec-all.h to cpu-exec.c.

This opens the possibility for TCG_TARGET_HAS_direct_jump to be
a runtime decision -- based on host cpu capabilities, the size of
code_gen_buffer, or a future debugging switch.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Missed being added as part of 71650df7.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>

This allows LOAD HALFWORD IMMEDIATE ON CONDITION,
eliminating one insn in some common cases.

Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>