diff options
Diffstat (limited to 'tcg/arm')
| -rw-r--r-- | tcg/arm/tcg-target.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c index 918e2f73cb..fb858d8634 100644 --- a/tcg/arm/tcg-target.c +++ b/tcg/arm/tcg-target.c @@ -375,6 +375,12 @@ static inline void tcg_out_blx(TCGContext *s, int cond, int rn) tcg_out32(s, (cond << 28) | 0x012fff30 | rn); } +static inline void tcg_out_blx_imm(TCGContext *s, int32_t offset) +{ + tcg_out32(s, 0xfa000000 | ((offset & 2) << 23) | + (((offset - 8) >> 2) & 0x00ffffff)); +} + static inline void tcg_out_dat_reg(TCGContext *s, int cond, int opc, int rd, int rn, int rm, int shift) { @@ -840,6 +846,11 @@ static inline void tcg_out_goto(TCGContext *s, int cond, uint32_t addr) { int32_t val; + if (addr & 1) { + /* goto to a Thumb destination isn't supported */ + tcg_abort(); + } + val = addr - (tcg_target_long) s->code_ptr; if (val - 8 < 0x01fffffd && val - 8 > -0x01fffffd) tcg_out_b(s, cond, val); @@ -860,14 +871,22 @@ static inline void tcg_out_goto(TCGContext *s, int cond, uint32_t addr) } } -static inline void tcg_out_call(TCGContext *s, int cond, uint32_t addr) +static inline void tcg_out_call(TCGContext *s, uint32_t addr) { int32_t val; val = addr - (tcg_target_long) s->code_ptr; - if (val < 0x01fffffd && val > -0x01fffffd) - tcg_out_bl(s, cond, val); - else { + if (val - 8 < 0x02000000 && val - 8 >= -0x02000000) { + if (addr & 1) { + /* Use BLX if the target is in Thumb mode */ + if (!use_armv5_instructions) { + tcg_abort(); + } + tcg_out_blx_imm(s, val); + } else { + tcg_out_bl(s, COND_AL, val); + } + } else { #if 1 tcg_abort(); #else @@ -1063,8 +1082,7 @@ static inline void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc) TCG_REG_R1, 0, addr_reg2, SHIFT_IMM_LSL(0)); tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R2, 0, mem_index); # endif - tcg_out_bl(s, COND_AL, (tcg_target_long) qemu_ld_helpers[s_bits] - - (tcg_target_long) s->code_ptr); + tcg_out_call(s, (tcg_target_long) qemu_ld_helpers[s_bits]); switch (opc) { case 0 | 4: @@ -1330,8 +1348,7 @@ static inline void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc) } # endif - tcg_out_bl(s, COND_AL, (tcg_target_long) qemu_st_helpers[s_bits] - - (tcg_target_long) s->code_ptr); + tcg_out_call(s, (tcg_target_long) qemu_st_helpers[s_bits]); if (opc == 3) tcg_out_dat_imm(s, COND_AL, ARITH_ADD, TCG_REG_R13, TCG_REG_R13, 0x10); @@ -1443,7 +1460,7 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, break; case INDEX_op_call: if (const_args[0]) - tcg_out_call(s, COND_AL, args[0]); + tcg_out_call(s, args[0]); else tcg_out_callr(s, COND_AL, args[0]); break; |