target-hppa: Implement floating-point insns

Signed-off-by: Richard Henderson <rth@twiddle.net>

1 files changed, 394 insertions, 0 deletions

diff --git a/target/hppa/op_helper.c b/target/hppa/op_helper.c
index 670e600bcd..c05c0d5572 100644
--- a/target/hppa/op_helper.c
+++ b/target/hppa/op_helper.c
@@ -174,3 +174,397 @@ void cpu_hppa_loaded_fr0(CPUHPPAState *env)
 {
     helper_loaded_fr0(env);
 }
+
+#define CONVERT_BIT(X, SRC, DST)        \
+    ((SRC) > (DST)                      \
+     ? (X) / ((SRC) / (DST)) & (DST)    \
+     : ((X) & (SRC)) * ((DST) / (SRC)))
+
+static void update_fr0_op(CPUHPPAState *env, uintptr_t ra)
+{
+    uint32_t soft_exp = get_float_exception_flags(&env->fp_status);
+    uint32_t hard_exp = 0;
+    uint32_t shadow = env->fr0_shadow;
+
+    if (likely(soft_exp == 0)) {
+        env->fr[0] = (uint64_t)shadow << 32;
+        return;
+    }
+    set_float_exception_flags(0, &env->fp_status);
+
+    hard_exp |= CONVERT_BIT(soft_exp, float_flag_inexact,   1u << 0);
+    hard_exp |= CONVERT_BIT(soft_exp, float_flag_underflow, 1u << 1);
+    hard_exp |= CONVERT_BIT(soft_exp, float_flag_overflow,  1u << 2);
+    hard_exp |= CONVERT_BIT(soft_exp, float_flag_divbyzero, 1u << 3);
+    hard_exp |= CONVERT_BIT(soft_exp, float_flag_invalid,   1u << 4);
+    shadow |= hard_exp << (32 - 5);
+    env->fr0_shadow = shadow;
+    env->fr[0] = (uint64_t)shadow << 32;
+
+    if (hard_exp & shadow) {
+        dynexcp(env, EXCP_SIGFPE, ra);
+    }
+}
+
+float32 HELPER(fsqrt_s)(CPUHPPAState *env, float32 arg)
+{
+    float32 ret = float32_sqrt(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(frnd_s)(CPUHPPAState *env, float32 arg)
+{
+    float32 ret = float32_round_to_int(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fadd_s)(CPUHPPAState *env, float32 a, float32 b)
+{
+    float32 ret = float32_add(a, b, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fsub_s)(CPUHPPAState *env, float32 a, float32 b)
+{
+    float32 ret = float32_sub(a, b, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fmpy_s)(CPUHPPAState *env, float32 a, float32 b)
+{
+    float32 ret = float32_mul(a, b, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fdiv_s)(CPUHPPAState *env, float32 a, float32 b)
+{
+    float32 ret = float32_div(a, b, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fsqrt_d)(CPUHPPAState *env, float64 arg)
+{
+    float64 ret = float64_sqrt(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(frnd_d)(CPUHPPAState *env, float64 arg)
+{
+    float64 ret = float64_round_to_int(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fadd_d)(CPUHPPAState *env, float64 a, float64 b)
+{
+    float64 ret = float64_add(a, b, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fsub_d)(CPUHPPAState *env, float64 a, float64 b)
+{
+    float64 ret = float64_sub(a, b, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fmpy_d)(CPUHPPAState *env, float64 a, float64 b)
+{
+    float64 ret = float64_mul(a, b, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fdiv_d)(CPUHPPAState *env, float64 a, float64 b)
+{
+    float64 ret = float64_div(a, b, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fcnv_s_d)(CPUHPPAState *env, float32 arg)
+{
+    float64 ret = float32_to_float64(arg, &env->fp_status);
+    ret = float64_maybe_silence_nan(ret, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fcnv_d_s)(CPUHPPAState *env, float64 arg)
+{
+    float32 ret = float64_to_float32(arg, &env->fp_status);
+    ret = float32_maybe_silence_nan(ret, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fcnv_w_s)(CPUHPPAState *env, int32_t arg)
+{
+    float32 ret = int32_to_float32(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fcnv_dw_s)(CPUHPPAState *env, int64_t arg)
+{
+    float32 ret = int64_to_float32(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fcnv_w_d)(CPUHPPAState *env, int32_t arg)
+{
+    float64 ret = int32_to_float64(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fcnv_dw_d)(CPUHPPAState *env, int64_t arg)
+{
+    float64 ret = int64_to_float64(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+int32_t HELPER(fcnv_s_w)(CPUHPPAState *env, float32 arg)
+{
+    int32_t ret = float32_to_int32(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+int32_t HELPER(fcnv_d_w)(CPUHPPAState *env, float64 arg)
+{
+    int32_t ret = float64_to_int32(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+int64_t HELPER(fcnv_s_dw)(CPUHPPAState *env, float32 arg)
+{
+    int64_t ret = float32_to_int64(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+int64_t HELPER(fcnv_d_dw)(CPUHPPAState *env, float64 arg)
+{
+    int64_t ret = float64_to_int64(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+int32_t HELPER(fcnv_t_s_w)(CPUHPPAState *env, float32 arg)
+{
+    int32_t ret = float32_to_int32_round_to_zero(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+int32_t HELPER(fcnv_t_d_w)(CPUHPPAState *env, float64 arg)
+{
+    int32_t ret = float64_to_int32_round_to_zero(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+int64_t HELPER(fcnv_t_s_dw)(CPUHPPAState *env, float32 arg)
+{
+    int64_t ret = float32_to_int64_round_to_zero(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+int64_t HELPER(fcnv_t_d_dw)(CPUHPPAState *env, float64 arg)
+{
+    int64_t ret = float64_to_int64_round_to_zero(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fcnv_uw_s)(CPUHPPAState *env, uint32_t arg)
+{
+    float32 ret = uint32_to_float32(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fcnv_udw_s)(CPUHPPAState *env, uint64_t arg)
+{
+    float32 ret = uint64_to_float32(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fcnv_uw_d)(CPUHPPAState *env, uint32_t arg)
+{
+    float64 ret = uint32_to_float64(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fcnv_udw_d)(CPUHPPAState *env, uint64_t arg)
+{
+    float64 ret = uint64_to_float64(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+uint32_t HELPER(fcnv_s_uw)(CPUHPPAState *env, float32 arg)
+{
+    uint32_t ret = float32_to_uint32(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+uint32_t HELPER(fcnv_d_uw)(CPUHPPAState *env, float64 arg)
+{
+    uint32_t ret = float64_to_uint32(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+uint64_t HELPER(fcnv_s_udw)(CPUHPPAState *env, float32 arg)
+{
+    uint64_t ret = float32_to_uint64(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+uint64_t HELPER(fcnv_d_udw)(CPUHPPAState *env, float64 arg)
+{
+    uint64_t ret = float64_to_uint64(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+uint32_t HELPER(fcnv_t_s_uw)(CPUHPPAState *env, float32 arg)
+{
+    uint32_t ret = float32_to_uint32_round_to_zero(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+uint32_t HELPER(fcnv_t_d_uw)(CPUHPPAState *env, float64 arg)
+{
+    uint32_t ret = float64_to_uint32_round_to_zero(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+uint64_t HELPER(fcnv_t_s_udw)(CPUHPPAState *env, float32 arg)
+{
+    uint64_t ret = float32_to_uint64_round_to_zero(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+uint64_t HELPER(fcnv_t_d_udw)(CPUHPPAState *env, float64 arg)
+{
+    uint64_t ret = float64_to_uint64_round_to_zero(arg, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+static void update_fr0_cmp(CPUHPPAState *env, uint32_t y, uint32_t c, int r)
+{
+    uint32_t shadow = env->fr0_shadow;
+
+    switch (r) {
+    case float_relation_greater:
+        c = extract32(c, 4, 1);
+        break;
+    case float_relation_less:
+        c = extract32(c, 3, 1);
+        break;
+    case float_relation_equal:
+        c = extract32(c, 2, 1);
+        break;
+    case float_relation_unordered:
+        c = extract32(c, 1, 1);
+        break;
+    default:
+        g_assert_not_reached();
+    }
+
+    if (y) {
+        /* targeted comparison */
+        /* set fpsr[ca[y - 1]] to current compare */
+        shadow = deposit32(shadow, 21 - (y - 1), 1, c);
+    } else {
+        /* queued comparison */
+        /* shift cq right by one place */
+        shadow = deposit32(shadow, 11, 10, extract32(shadow, 12, 10));
+        /* move fpsr[c] to fpsr[cq[0]] */
+        shadow = deposit32(shadow, 21, 1, extract32(shadow, 26, 1));
+        /* set fpsr[c] to current compare */
+        shadow = deposit32(shadow, 26, 1, c);
+    }
+
+    env->fr0_shadow = shadow;
+    env->fr[0] = (uint64_t)shadow << 32;
+}
+
+void HELPER(fcmp_s)(CPUHPPAState *env, float32 a, float32 b,
+                    uint32_t y, uint32_t c)
+{
+    int r;
+    if (c & 1) {
+        r = float32_compare(a, b, &env->fp_status);
+    } else {
+        r = float32_compare_quiet(a, b, &env->fp_status);
+    }
+    update_fr0_op(env, GETPC());
+    update_fr0_cmp(env, y, c, r);
+}
+
+void HELPER(fcmp_d)(CPUHPPAState *env, float64 a, float64 b,
+                    uint32_t y, uint32_t c)
+{
+    int r;
+    if (c & 1) {
+        r = float64_compare(a, b, &env->fp_status);
+    } else {
+        r = float64_compare_quiet(a, b, &env->fp_status);
+    }
+    update_fr0_op(env, GETPC());
+    update_fr0_cmp(env, y, c, r);
+}
+
+float32 HELPER(fmpyfadd_s)(CPUHPPAState *env, float32 a, float32 b, float32 c)
+{
+    float32 ret = float32_muladd(a, b, c, 0, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float32 HELPER(fmpynfadd_s)(CPUHPPAState *env, float32 a, float32 b, float32 c)
+{
+    float32 ret = float32_muladd(a, b, c, float_muladd_negate_product,
+                                 &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fmpyfadd_d)(CPUHPPAState *env, float64 a, float64 b, float64 c)
+{
+    float64 ret = float64_muladd(a, b, c, 0, &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}
+
+float64 HELPER(fmpynfadd_d)(CPUHPPAState *env, float64 a, float64 b, float64 c)
+{
+    float64 ret = float64_muladd(a, b, c, float_muladd_negate_product,
+                                 &env->fp_status);
+    update_fr0_op(env, GETPC());
+    return ret;
+}