diff options
Diffstat (limited to 'tcg/aarch64/tcg-target.inc.c')
| -rw-r--r-- | tcg/aarch64/tcg-target.inc.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/tcg/aarch64/tcg-target.inc.c b/tcg/aarch64/tcg-target.inc.c index a8fb4420de..88183c830f 100644 --- a/tcg/aarch64/tcg-target.inc.c +++ b/tcg/aarch64/tcg-target.inc.c @@ -73,6 +73,18 @@ static inline void reloc_pc26(tcg_insn_unit *code_ptr, tcg_insn_unit *target) *code_ptr = deposit32(*code_ptr, 0, 26, offset); } +static inline void reloc_pc26_atomic(tcg_insn_unit *code_ptr, + tcg_insn_unit *target) +{ + ptrdiff_t offset = target - code_ptr; + tcg_insn_unit insn; + tcg_debug_assert(offset == sextract64(offset, 0, 26)); + /* read instruction, mask away previous PC_REL26 parameter contents, + set the proper offset, then write back the instruction. */ + insn = atomic_read(code_ptr); + atomic_set(code_ptr, deposit32(insn, 0, 26, offset)); +} + static inline void reloc_pc19(tcg_insn_unit *code_ptr, tcg_insn_unit *target) { ptrdiff_t offset = target - code_ptr; @@ -835,7 +847,7 @@ void aarch64_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr) tcg_insn_unit *code_ptr = (tcg_insn_unit *)jmp_addr; tcg_insn_unit *target = (tcg_insn_unit *)addr; - reloc_pc26(code_ptr, target); + reloc_pc26_atomic(code_ptr, target); flush_icache_range(jmp_addr, jmp_addr + 4); } |