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tcg/aarch64: Fold away "noaddr" branch routines 

There are one use apiece for these.  There is no longer a need for
preserving branch offset operands, as we no longer re-translate.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2018-11-29 20:52:47 +00:00
parent 90d6cb7811
commit 733589b338
1 changed files with 2 additions and 19 deletions
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21
tcg/aarch64/tcg-target.inc.c
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@ -1129,23 +1129,6 @@ static inline void tcg_out_goto_long(TCGContext *s, tcg_insn_unit *target)
}
}
static inline void tcg_out_goto_noaddr(TCGContext *s)
{
/* We pay attention here to not modify the branch target by reading from
the buffer. This ensure that caches and memory are kept coherent during
retranslation. Mask away possible garbage in the high bits for the
first translation, while keeping the offset bits for retranslation. */
uint32_t old = tcg_in32(s);
tcg_out_insn(s, 3206, B, old);
}
static inline void tcg_out_goto_cond_noaddr(TCGContext *s, TCGCond c)
{
/* See comments in tcg_out_goto_noaddr. */
uint32_t old = tcg_in32(s) >> 5;
tcg_out_insn(s, 3202, B_C, c, old);
}
static inline void tcg_out_callr(TCGContext *s, TCGReg reg)
{
tcg_out_insn(s, 3207, BLR, reg);
@ -1192,7 +1175,7 @@ static inline void tcg_out_goto_label(TCGContext *s, TCGLabel *l)
{
if (!l->has_value) {
tcg_out_reloc(s, s->code_ptr, R_AARCH64_JUMP26, l, 0);
tcg_out_goto_noaddr(s);
tcg_out_insn(s, 3206, B, 0);
} else {
tcg_out_goto(s, l->u.value_ptr);
}
@ -1523,7 +1506,7 @@ static void tcg_out_tlb_read(TCGContext *s, TCGReg addr_reg, TCGMemOp opc,
/* If not equal, we jump to the slow path. */
*label_ptr = s->code_ptr;
tcg_out_goto_cond_noaddr(s, TCG_COND_NE);
tcg_out_insn(s, 3202, B_C, TCG_COND_NE, 0);
}
#endif /* CONFIG_SOFTMMU */