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tcg/arm: Fold away noaddr branch routines

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

Backports commit 37ee93a974c49ab9edfcd1db0aad3838b0395b14 from qemu
This commit is contained in:
Richard Henderson 2018-12-18 05:17:20 -05:00 committed by Lioncash
parent 1167aa481d
commit b49a353adb
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 3 additions and 19 deletions
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22
qemu/tcg/arm/tcg-target.inc.c
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@ -366,22 +366,6 @@ static inline void tcg_out_b(TCGContext *s, int cond, int32_t offset)
(((offset - 8) >> 2) & 0x00ffffff));
}
static inline void tcg_out_b_noaddr(TCGContext *s, int cond)
{
/* We pay attention here to not modify the branch target by masking
the corresponding bytes. This ensure that caches and memory are
kept coherent during retranslation. */
tcg_out32(s, deposit32(*s->code_ptr, 24, 8, (cond << 4) | 0x0a));
}
static inline void tcg_out_bl_noaddr(TCGContext *s, int cond)
{
/* We pay attention here to not modify the branch target by masking
the corresponding bytes. This ensure that caches and memory are
kept coherent during retranslation. */
tcg_out32(s, deposit32(*s->code_ptr, 24, 8, (cond << 4) | 0x0b));
}
static inline void tcg_out_bl(TCGContext *s, int cond, int32_t offset)
{
tcg_out32(s, (cond << 28) | 0x0b000000 |
@ -1082,7 +1066,7 @@ static inline void tcg_out_goto_label(TCGContext *s, int cond, TCGLabel *l)
tcg_out_goto(s, cond, l->u.value_ptr);
} else {
tcg_out_reloc(s, s->code_ptr, R_ARM_PC24, l, 0);
tcg_out_b_noaddr(s, cond);
tcg_out_b(s, cond, 0);
}
}
@ -1628,7 +1612,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is64)
/* This a conditional BL only to load a pointer within this opcode into LR
for the slow path. We will not be using the value for a tail call. */
label_ptr = s->code_ptr;
tcg_out_bl_noaddr(s, COND_NE);
tcg_out_bl(s, COND_NE, 0);
tcg_out_qemu_ld_index(s, opc, datalo, datahi, addrlo, addend);
@ -1760,7 +1744,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64)
/* The conditional call must come last, as we're going to return here. */
label_ptr = s->code_ptr;
tcg_out_bl_noaddr(s, COND_NE);
tcg_out_bl(s, COND_NE, 0);
add_qemu_ldst_label(s, false, oi, datalo, datahi, addrlo, addrhi,
s->code_ptr, label_ptr);