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tcg-sparc: Fix and enable direct TB chaining. 

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-09-21 10:48:51 -07:00
parent 26adfb759c
commit 5bbd2cae8e
2 changed files with 24 additions and 6 deletions
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9
exec-all.h
View File

@ -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

21
tcg/sparc/tcg-target.c
View File

@ -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);
}