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qemu-e2k
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target: e2k: Add exception for abn/abp instr.

This commit is contained in:
Denis Drakhnia 2020-11-16 18:16:27 +02:00 committed by Denis Drakhnia
parent 01d1a9e9cd
commit 6324d621eb
3 changed files with 30 additions and 30 deletions
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11
target/e2k/helper.c
View File

@ -327,3 +327,14 @@ uint64_t helper_getsp(CPUE2KState *env, uint64_t src2) {
return base;
}
uint32_t helper_cur_dec(CPUE2KState *env, uint32_t cur, uint32_t n,
uint32_t size)
{
if (size == 0) {
/* FIXME: SIGSEGV */
helper_raise_exception(env, E2K_EXCP_UNIMPL);
}
return size - (size + n - cur) % size;
}

1
target/e2k/helper.h
View File

@ -7,3 +7,4 @@ DEF_HELPER_1(debug_i64, void, i64)
DEF_HELPER_2(state_reg_get, i64, env, int)
DEF_HELPER_3(state_reg_set, void, env, int, i64)
DEF_HELPER_2(getsp, i64, env, i64) /* FIXME: return tl? */
DEF_HELPER_4(cur_dec, i32, env, i32, i32, i32)

48
target/e2k/translate/control.c
View File

@ -36,24 +36,6 @@ static inline void gen_lcnt_dec(TCGv_i64 ret, TCGv_i64 lsr)
tcg_temp_free_i32(zero);
}
static inline void gen_dec_cur(TCGv_i32 ret, TCGv_i32 cur, int val,
TCGv_i32 size)
{
TCGv_i32 t0 = tcg_temp_new_i32();
TCGv_i32 t1 = tcg_temp_new_i32();
TCGv_i32 t2 = tcg_temp_new_i32();
tcg_gen_addi_i32(t0, size, val);
tcg_gen_sub_i32(t1, t0, cur);
tcg_gen_remu_i32(t2, t1, size);
tcg_gen_sub_i32(ret, size, t2);
tcg_temp_free_i32(t2);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t0);
}
__attribute__((noinline))
static void gen_movcond_flag_i32(TCGv_i32 ret, int flag, TCGv_i32 cond,
TCGv_i32 v1, TCGv_i32 v2)
{
@ -112,6 +94,22 @@ static inline void gen_movcond_flag_i64(TCGv_i64 ret, int flag, TCGv_i64 cond,
tcg_temp_free_i64(one);
}
static inline void gen_cur_dec(TCGv_i32 ret, int cond, TCGv_i32 cur, int n,
TCGv_i32 size)
{
TCGv_i32 c = tcg_temp_new_i32();
TCGv_i32 t0 = tcg_const_i32(n);
TCGv_i32 t1 = tcg_temp_new_i32();
tcg_gen_trunc_tl_i32(c, e2k_cs.cond);
gen_helper_cur_dec(t1, cpu_env, cur, t0, size);
gen_movcond_flag_i32(ret, cond, c, t1, cur);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t0);
tcg_temp_free_i32(c);
}
void e2k_win_commit(DisasContext *dc)
{
TCGv_i32 cond = tcg_temp_new_i32();
@ -136,21 +134,11 @@ void e2k_win_commit(DisasContext *dc)
}
if (abp) {
TCGv_i32 t0 = tcg_temp_new_i32();
gen_dec_cur(t0, e2k_cs.pcur, 1, e2k_cs.psize);
gen_movcond_flag_i32(e2k_cs.pcur, abp, cond, t0, e2k_cs.pcur);
tcg_temp_free_i32(t0);
gen_cur_dec(e2k_cs.pcur, abp, e2k_cs.pcur, 1, e2k_cs.psize);
}
if (abn) {
TCGv_i32 t0 = tcg_temp_new_i32();
gen_dec_cur(t0, e2k_cs.bcur, 2, e2k_cs.bsize);
gen_movcond_flag_i32(e2k_cs.bcur, abn, cond, t0, e2k_cs.bcur);
tcg_temp_free_i32(t0);
gen_cur_dec(e2k_cs.bcur, abn, e2k_cs.bcur, 2, e2k_cs.bsize);
}
switch(abg) {