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microblaze: Turn res_addr into a tcg global 

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
This commit is contained in:
Edgar E. Iglesias 2013-10-23 16:44:08 +02:00
parent 536446e914
commit 4a53627045
1 changed files with 7 additions and 6 deletions
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13
target-microblaze/translate.c
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@ -49,6 +49,7 @@ static TCGv env_imm;
static TCGv env_btaken;
static TCGv env_btarget;
static TCGv env_iflags;
static TCGv env_res_addr;
#include "exec/gen-icount.h"
@ -877,7 +878,7 @@ static inline void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
cpu_abort(dc->env, "Incorrect load size %d\n", size);
if (exclusive) {
tcg_gen_st_tl(addr, cpu_env, offsetof(CPUMBState, res_addr));
tcg_gen_mov_tl(env_res_addr, addr);
}
}
@ -1101,7 +1102,7 @@ static void gen_store(DisasContext *dc, TCGv addr, TCGv val,
static void dec_store(DisasContext *dc)
{
TCGv t, *addr, swx_addr, r_check;
TCGv t, *addr, swx_addr;
int swx_skip = 0;
unsigned int size, rev = 0, ex = 0;
@ -1125,7 +1126,6 @@ static void dec_store(DisasContext *dc)
sync_jmpstate(dc);
addr = compute_ldst_addr(dc, &t);
r_check = tcg_temp_new();
swx_addr = tcg_temp_local_new();
if (ex) { /* swx */
@ -1135,10 +1135,9 @@ static void dec_store(DisasContext *dc)
/* swx does not throw unaligned access errors, so force alignment */
tcg_gen_andi_tl(swx_addr, swx_addr, ~3);
tcg_gen_ld_tl(r_check, cpu_env, offsetof(CPUMBState, res_addr));
write_carryi(dc, 1);
swx_skip = gen_new_label();
tcg_gen_brcond_tl(TCG_COND_NE, r_check, swx_addr, swx_skip);
tcg_gen_brcond_tl(TCG_COND_NE, env_res_addr, swx_addr, swx_skip);
write_carryi(dc, 0);
}
@ -1221,7 +1220,6 @@ static void dec_store(DisasContext *dc)
if (ex) {
gen_set_label(swx_skip);
}
tcg_temp_free(r_check);
tcg_temp_free(swx_addr);
if (addr == &t)
@ -2008,6 +2006,9 @@ void mb_tcg_init(void)
env_btaken = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUMBState, btaken),
"btaken");
env_res_addr = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUMBState, res_addr),
"res_addr");
for (i = 0; i < ARRAY_SIZE(cpu_R); i++) {
cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUMBState, regs[i]),