diff options
| author | Richard Henderson <rth@twiddle.net> | 2012-09-21 10:48:51 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2012-09-21 22:02:20 +0200 |
| commit | 5bbd2cae8e087b4329e17c3f44439096e4c3ec6a (patch) | |
| tree | e9015aac3a788847b42b2133989902452c24c630 | |
| parent | 26adfb759c4c6ad42958c365812945316f3468ae (diff) | |
| download | qemu-5bbd2cae8e087b4329e17c3f44439096e4c3ec6a.tar.gz | |
tcg-sparc: Fix and enable direct TB chaining.
Signed-off-by: Richard Henderson <rth@twiddle.net>
| -rw-r--r-- | exec-all.h | 9 | ||||
| -rw-r--r-- | tcg/sparc/tcg-target.c | 21 |
2 files changed, 24 insertions, 6 deletions
diff --git a/exec-all.h b/exec-all.h index dba96098b8..6516da071d 100644 --- a/exec-all.h +++ b/exec-all.h @@ -132,9 +132,10 @@ static inline void tlb_flush(CPUArchState *env, int flush_global) #define CODE_GEN_AVG_BLOCK_SIZE 64 #endif -#if defined(_ARCH_PPC) || defined(__x86_64__) || defined(__arm__) || defined(__i386__) -#define USE_DIRECT_JUMP -#elif defined(CONFIG_TCG_INTERPRETER) +#if defined(__arm__) || defined(_ARCH_PPC) \ + || defined(__x86_64__) || defined(__i386__) \ + || defined(__sparc__) \ + || defined(CONFIG_TCG_INTERPRETER) #define USE_DIRECT_JUMP #endif @@ -244,6 +245,8 @@ static inline void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr) __asm __volatile__ ("swi 0x9f0002" : : "r" (_beg), "r" (_end), "r" (_flg)); #endif } +#elif defined(__sparc__) +void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr); #else #error tb_set_jmp_target1 is missing #endif diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c index 03c385a997..1db0c9d4c3 100644 --- a/tcg/sparc/tcg-target.c +++ b/tcg/sparc/tcg-target.c @@ -1072,10 +1072,10 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args, case INDEX_op_goto_tb: if (s->tb_jmp_offset) { /* direct jump method */ - tcg_out_sethi(s, TCG_REG_T1, args[0] & 0xffffe000); - tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_T1) | - INSN_IMM13((args[0] & 0x1fff))); + uint32_t old_insn = *(uint32_t *)s->code_ptr; s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf; + /* Make sure to preserve links during retranslation. */ + tcg_out32(s, CALL | (old_insn & ~INSN_OP(-1))); } else { /* indirect jump method */ tcg_out_ld_ptr(s, TCG_REG_T1, @@ -1595,3 +1595,18 @@ void tcg_register_jit(void *buf, size_t buf_size) tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame)); } + +void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr) +{ + uint32_t *ptr = (uint32_t *)jmp_addr; + tcg_target_long disp = (tcg_target_long)(addr - jmp_addr) >> 2; + + /* We can reach the entire address space for 32-bit. For 64-bit + the code_gen_buffer can't be larger than 2GB. */ + if (TCG_TARGET_REG_BITS == 64 && !check_fit_tl(disp, 30)) { + tcg_abort(); + } + + *ptr = CALL | (disp & 0x3fffffff); + flush_icache_range(jmp_addr, jmp_addr + 4); +} |