target-alpha: Move VAX helpers to a new file

Keep the IEEE and VAX floating point emulation separate.

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

1 files changed, 0 insertions, 328 deletions

diff --git a/target-alpha/fpu_helper.c b/target-alpha/fpu_helper.c
index d2d776c446..8acd4601b4 100644
--- a/target-alpha/fpu_helper.c
+++ b/target-alpha/fpu_helper.c
@@ -126,263 +126,6 @@ void helper_ieee_input_cmp(CPUAlphaState *env, uint64_t val)
     }
 }
 
-/* F floating (VAX) */
-static uint64_t float32_to_f(float32 fa)
-{
-    uint64_t r, exp, mant, sig;
-    CPU_FloatU a;
-
-    a.f = fa;
-    sig = ((uint64_t)a.l & 0x80000000) << 32;
-    exp = (a.l >> 23) & 0xff;
-    mant = ((uint64_t)a.l & 0x007fffff) << 29;
-
-    if (exp == 255) {
-        /* NaN or infinity */
-        r = 1; /* VAX dirty zero */
-    } else if (exp == 0) {
-        if (mant == 0) {
-            /* Zero */
-            r = 0;
-        } else {
-            /* Denormalized */
-            r = sig | ((exp + 1) << 52) | mant;
-        }
-    } else {
-        if (exp >= 253) {
-            /* Overflow */
-            r = 1; /* VAX dirty zero */
-        } else {
-            r = sig | ((exp + 2) << 52);
-        }
-    }
-
-    return r;
-}
-
-static float32 f_to_float32(CPUAlphaState *env, uintptr_t retaddr, uint64_t a)
-{
-    uint32_t exp, mant_sig;
-    CPU_FloatU r;
-
-    exp = ((a >> 55) & 0x80) | ((a >> 52) & 0x7f);
-    mant_sig = ((a >> 32) & 0x80000000) | ((a >> 29) & 0x007fffff);
-
-    if (unlikely(!exp && mant_sig)) {
-        /* Reserved operands / Dirty zero */
-        dynamic_excp(env, retaddr, EXCP_OPCDEC, 0);
-    }
-
-    if (exp < 3) {
-        /* Underflow */
-        r.l = 0;
-    } else {
-        r.l = ((exp - 2) << 23) | mant_sig;
-    }
-
-    return r.f;
-}
-
-uint32_t helper_f_to_memory(uint64_t a)
-{
-    uint32_t r;
-    r =  (a & 0x00001fffe0000000ull) >> 13;
-    r |= (a & 0x07ffe00000000000ull) >> 45;
-    r |= (a & 0xc000000000000000ull) >> 48;
-    return r;
-}
-
-uint64_t helper_memory_to_f(uint32_t a)
-{
-    uint64_t r;
-    r =  ((uint64_t)(a & 0x0000c000)) << 48;
-    r |= ((uint64_t)(a & 0x003fffff)) << 45;
-    r |= ((uint64_t)(a & 0xffff0000)) << 13;
-    if (!(a & 0x00004000)) {
-        r |= 0x7ll << 59;
-    }
-    return r;
-}
-
-/* ??? Emulating VAX arithmetic with IEEE arithmetic is wrong.  We should
-   either implement VAX arithmetic properly or just signal invalid opcode.  */
-
-uint64_t helper_addf(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float32 fa, fb, fr;
-
-    fa = f_to_float32(env, GETPC(), a);
-    fb = f_to_float32(env, GETPC(), b);
-    fr = float32_add(fa, fb, &FP_STATUS);
-    return float32_to_f(fr);
-}
-
-uint64_t helper_subf(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float32 fa, fb, fr;
-
-    fa = f_to_float32(env, GETPC(), a);
-    fb = f_to_float32(env, GETPC(), b);
-    fr = float32_sub(fa, fb, &FP_STATUS);
-    return float32_to_f(fr);
-}
-
-uint64_t helper_mulf(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float32 fa, fb, fr;
-
-    fa = f_to_float32(env, GETPC(), a);
-    fb = f_to_float32(env, GETPC(), b);
-    fr = float32_mul(fa, fb, &FP_STATUS);
-    return float32_to_f(fr);
-}
-
-uint64_t helper_divf(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float32 fa, fb, fr;
-
-    fa = f_to_float32(env, GETPC(), a);
-    fb = f_to_float32(env, GETPC(), b);
-    fr = float32_div(fa, fb, &FP_STATUS);
-    return float32_to_f(fr);
-}
-
-uint64_t helper_sqrtf(CPUAlphaState *env, uint64_t t)
-{
-    float32 ft, fr;
-
-    ft = f_to_float32(env, GETPC(), t);
-    fr = float32_sqrt(ft, &FP_STATUS);
-    return float32_to_f(fr);
-}
-
-
-/* G floating (VAX) */
-static uint64_t float64_to_g(float64 fa)
-{
-    uint64_t r, exp, mant, sig;
-    CPU_DoubleU a;
-
-    a.d = fa;
-    sig = a.ll & 0x8000000000000000ull;
-    exp = (a.ll >> 52) & 0x7ff;
-    mant = a.ll & 0x000fffffffffffffull;
-
-    if (exp == 2047) {
-        /* NaN or infinity */
-        r = 1; /* VAX dirty zero */
-    } else if (exp == 0) {
-        if (mant == 0) {
-            /* Zero */
-            r = 0;
-        } else {
-            /* Denormalized */
-            r = sig | ((exp + 1) << 52) | mant;
-        }
-    } else {
-        if (exp >= 2045) {
-            /* Overflow */
-            r = 1; /* VAX dirty zero */
-        } else {
-            r = sig | ((exp + 2) << 52);
-        }
-    }
-
-    return r;
-}
-
-static float64 g_to_float64(CPUAlphaState *env, uintptr_t retaddr, uint64_t a)
-{
-    uint64_t exp, mant_sig;
-    CPU_DoubleU r;
-
-    exp = (a >> 52) & 0x7ff;
-    mant_sig = a & 0x800fffffffffffffull;
-
-    if (!exp && mant_sig) {
-        /* Reserved operands / Dirty zero */
-        dynamic_excp(env, retaddr, EXCP_OPCDEC, 0);
-    }
-
-    if (exp < 3) {
-        /* Underflow */
-        r.ll = 0;
-    } else {
-        r.ll = ((exp - 2) << 52) | mant_sig;
-    }
-
-    return r.d;
-}
-
-uint64_t helper_g_to_memory(uint64_t a)
-{
-    uint64_t r;
-    r =  (a & 0x000000000000ffffull) << 48;
-    r |= (a & 0x00000000ffff0000ull) << 16;
-    r |= (a & 0x0000ffff00000000ull) >> 16;
-    r |= (a & 0xffff000000000000ull) >> 48;
-    return r;
-}
-
-uint64_t helper_memory_to_g(uint64_t a)
-{
-    uint64_t r;
-    r =  (a & 0x000000000000ffffull) << 48;
-    r |= (a & 0x00000000ffff0000ull) << 16;
-    r |= (a & 0x0000ffff00000000ull) >> 16;
-    r |= (a & 0xffff000000000000ull) >> 48;
-    return r;
-}
-
-uint64_t helper_addg(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float64 fa, fb, fr;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fb = g_to_float64(env, GETPC(), b);
-    fr = float64_add(fa, fb, &FP_STATUS);
-    return float64_to_g(fr);
-}
-
-uint64_t helper_subg(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float64 fa, fb, fr;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fb = g_to_float64(env, GETPC(), b);
-    fr = float64_sub(fa, fb, &FP_STATUS);
-    return float64_to_g(fr);
-}
-
-uint64_t helper_mulg(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float64 fa, fb, fr;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fb = g_to_float64(env, GETPC(), b);
-    fr = float64_mul(fa, fb, &FP_STATUS);
-    return float64_to_g(fr);
-}
-
-uint64_t helper_divg(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float64 fa, fb, fr;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fb = g_to_float64(env, GETPC(), b);
-    fr = float64_div(fa, fb, &FP_STATUS);
-    return float64_to_g(fr);
-}
-
-uint64_t helper_sqrtg(CPUAlphaState *env, uint64_t a)
-{
-    float64 fa, fr;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fr = float64_sqrt(fa, &FP_STATUS);
-    return float64_to_g(fr);
-}
-
 
 /* S floating (single) */
 
@@ -613,48 +356,6 @@ uint64_t helper_cmptlt(CPUAlphaState *env, uint64_t a, uint64_t b)
     }
 }
 
-uint64_t helper_cmpgeq(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float64 fa, fb;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fb = g_to_float64(env, GETPC(), b);
-
-    if (float64_eq_quiet(fa, fb, &FP_STATUS)) {
-        return 0x4000000000000000ULL;
-    } else {
-        return 0;
-    }
-}
-
-uint64_t helper_cmpgle(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float64 fa, fb;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fb = g_to_float64(env, GETPC(), b);
-
-    if (float64_le(fa, fb, &FP_STATUS)) {
-        return 0x4000000000000000ULL;
-    } else {
-        return 0;
-    }
-}
-
-uint64_t helper_cmpglt(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
-    float64 fa, fb;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fb = g_to_float64(env, GETPC(), b);
-
-    if (float64_lt(fa, fb, &FP_STATUS)) {
-        return 0x4000000000000000ULL;
-    } else {
-        return 0;
-    }
-}
-
 /* Floating point format conversion */
 uint64_t helper_cvtts(CPUAlphaState *env, uint64_t a)
 {
@@ -792,35 +493,6 @@ uint64_t helper_cvtqt(CPUAlphaState *env, uint64_t a)
     return float64_to_t(fr);
 }
 
-uint64_t helper_cvtqf(CPUAlphaState *env, uint64_t a)
-{
-    float32 fr = int64_to_float32(a, &FP_STATUS);
-    return float32_to_f(fr);
-}
-
-uint64_t helper_cvtgf(CPUAlphaState *env, uint64_t a)
-{
-    float64 fa;
-    float32 fr;
-
-    fa = g_to_float64(env, GETPC(), a);
-    fr = float64_to_float32(fa, &FP_STATUS);
-    return float32_to_f(fr);
-}
-
-uint64_t helper_cvtgq(CPUAlphaState *env, uint64_t a)
-{
-    float64 fa = g_to_float64(env, GETPC(), a);
-    return float64_to_int64_round_to_zero(fa, &FP_STATUS);
-}
-
-uint64_t helper_cvtqg(CPUAlphaState *env, uint64_t a)
-{
-    float64 fr;
-    fr = int64_to_float64(a, &FP_STATUS);
-    return float64_to_g(fr);
-}
-
 void helper_fcvtql_v_input(CPUAlphaState *env, uint64_t val)
 {
     if (val != (int32_t)val) {