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tcg/arm: use the blx instruction when possible 

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2010-04-09 20:52:48 +02:00
parent 8f7f749f21
commit 23401b58a4
1 changed files with 12 additions and 4 deletions
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16
tcg/arm/tcg-target.c
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@ -357,6 +357,11 @@ static inline void tcg_out_bl(TCGContext *s, int cond, int32_t offset)
(((offset - 8) >> 2) & 0x00ffffff));
}
static inline void tcg_out_blx(TCGContext *s, int cond, int rn)
{
tcg_out32(s, (cond << 28) | 0x012fff30 | rn);
}
static inline void tcg_out_dat_reg(TCGContext *s,
int cond, int opc, int rd, int rn, int rm, int shift)
{
@ -778,10 +783,13 @@ static inline void tcg_out_call(TCGContext *s, int cond, uint32_t addr)
static inline void tcg_out_callr(TCGContext *s, int cond, int arg)
{
/* TODO: on ARMv5 and ARMv6 replace with tcg_out_blx(s, cond, arg); */
tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R14, 0,
TCG_REG_PC, SHIFT_IMM_LSL(0));
tcg_out_bx(s, cond, arg);
if (use_armv5_instructions) {
tcg_out_blx(s, cond, arg);
} else {
tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R14, 0,
TCG_REG_PC, SHIFT_IMM_LSL(0));
tcg_out_bx(s, cond, arg);
}
}
static inline void tcg_out_goto_label(TCGContext *s, int cond, int label_index)