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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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3
tcg/sparc/tcg-target.h
View file

@ -124,6 +124,7 @@ extern bool use_vis3_instructions;
#define TCG_TARGET_HAS_muluh_i32 0
#define TCG_TARGET_HAS_mulsh_i32 0
#define TCG_TARGET_HAS_goto_ptr 1
#define TCG_TARGET_HAS_direct_jump 1
#define TCG_TARGET_HAS_extrl_i64_i32 1
#define TCG_TARGET_HAS_extrh_i64_i32 1
@ -172,4 +173,6 @@ static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
}
}
void tb_target_set_jmp_target(uintptr_t, uintptr_t, uintptr_t);
#endif

3
tcg/sparc/tcg-target.inc.c
View file

@ -1708,7 +1708,8 @@ void tcg_register_jit(void *buf, size_t buf_size)
tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
}
void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr)
void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_addr,
uintptr_t addr)
{
uint32_t *ptr = (uint32_t *)jmp_addr;
uintptr_t disp = addr - jmp_addr;