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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/ppc/tcg-target.inc.c
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@ -1296,7 +1296,8 @@ static void tcg_out_mb(TCGContext *s, TCGArg a0)
}
#ifdef __powerpc64__
void ppc_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_addr,
uintptr_t addr)
{
tcg_insn_unit i1, i2;
uint64_t pair;
@ -1328,7 +1329,8 @@ void ppc_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
flush_icache_range(jmp_addr, jmp_addr + 8);
}
#else
void ppc_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_addr,
uintptr_t addr)
{
intptr_t diff = addr - jmp_addr;
tcg_debug_assert(in_range_b(diff));