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tcg: Move USE_DIRECT_JUMP discriminator to tcg/cpu/tcg-target.h

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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>
This commit is contained in:
Richard Henderson 2017-07-31 22:02:31 -07:00
parent cda4a338c4
commit a858339336
16 changed files with 106 additions and 116 deletions
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6
tcg/arm/tcg-target.h
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@ -124,16 +124,20 @@ extern bool use_idiv_instructions;
#define TCG_TARGET_HAS_div_i32 use_idiv_instructions
#define TCG_TARGET_HAS_rem_i32 0
#define TCG_TARGET_HAS_goto_ptr 1
#define TCG_TARGET_HAS_direct_jump 0
enum {
TCG_AREG0 = TCG_REG_R6,
};
#define TCG_TARGET_DEFAULT_MO (0)
static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
{
__builtin___clear_cache((char *) start, (char *) stop);
}
#define TCG_TARGET_DEFAULT_MO (0)
/* not defined -- call should be eliminated at compile time */
void tb_target_set_jmp_target(uintptr_t, uintptr_t, uintptr_t);
#endif