From 826d1afd58c2e064a9c8fdb09eda1b08469de1a8 Mon Sep 17 00:00:00 2001
From: pommicket <pommicket@gmail.com>
Date: Fri, 18 Feb 2022 12:36:57 -0500
Subject: newer version of tcc almost working

---
 05/tcc-0.9.27/lib/lib-arm64.c | 664 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 664 insertions(+)
 create mode 100644 05/tcc-0.9.27/lib/lib-arm64.c

(limited to '05/tcc-0.9.27/lib/lib-arm64.c')

diff --git a/05/tcc-0.9.27/lib/lib-arm64.c b/05/tcc-0.9.27/lib/lib-arm64.c
new file mode 100644
index 0000000..b8fd9e8
--- /dev/null
+++ b/05/tcc-0.9.27/lib/lib-arm64.c
@@ -0,0 +1,664 @@
+/*
+ *  TCC runtime library for arm64.
+ *
+ *  Copyright (c) 2015 Edmund Grimley Evans
+ *
+ * Copying and distribution of this file, with or without modification,
+ * are permitted in any medium without royalty provided the copyright
+ * notice and this notice are preserved.  This file is offered as-is,
+ * without any warranty.
+ */
+
+#ifdef __TINYC__
+typedef signed char int8_t;
+typedef unsigned char uint8_t;
+typedef short int16_t;
+typedef unsigned short uint16_t;
+typedef int int32_t;
+typedef unsigned uint32_t;
+typedef long long int64_t;
+typedef unsigned long long uint64_t;
+void *memcpy(void*,void*,__SIZE_TYPE__);
+#else
+#include <stdint.h>
+#include <string.h>
+#endif
+
+void __clear_cache(void *beg, void *end)
+{
+    __arm64_clear_cache(beg, end);
+}
+
+typedef struct {
+    uint64_t x0, x1;
+} u128_t;
+
+static long double f3_zero(int sgn)
+{
+    long double f;
+    u128_t x = { 0, (uint64_t)sgn << 63 };
+    memcpy(&f, &x, 16);
+    return f;
+}
+
+static long double f3_infinity(int sgn)
+{
+    long double f;
+    u128_t x = { 0, (uint64_t)sgn << 63 | 0x7fff000000000000 };
+    memcpy(&f, &x, 16);
+    return f;
+}
+
+static long double f3_NaN(void)
+{
+    long double f;
+#if 0
+    // ARM's default NaN usually has just the top fraction bit set:
+    u128_t x = {  0, 0x7fff800000000000 };
+#else
+    // GCC's library sets all fraction bits:
+    u128_t x = { -1, 0x7fffffffffffffff };
+#endif
+    memcpy(&f, &x, 16);
+    return f;
+}
+
+static int fp3_convert_NaN(long double *f, int sgn, u128_t mnt)
+{
+    u128_t x = { mnt.x0,
+                 mnt.x1 | 0x7fff800000000000 | (uint64_t)sgn << 63 };
+    memcpy(f, &x, 16);
+    return 1;
+}
+
+static int fp3_detect_NaNs(long double *f,
+                           int a_sgn, int a_exp, u128_t a,
+                           int b_sgn, int b_exp, u128_t b)
+{
+    // Detect signalling NaNs:
+    if (a_exp == 32767 && (a.x0 | a.x1 << 16) && !(a.x1 >> 47 & 1))
+        return fp3_convert_NaN(f, a_sgn, a);
+    if (b_exp == 32767 && (b.x0 | b.x1 << 16) && !(b.x1 >> 47 & 1))
+        return fp3_convert_NaN(f, b_sgn, b);
+
+    // Detect quiet NaNs:
+    if (a_exp == 32767 && (a.x0 | a.x1 << 16))
+        return fp3_convert_NaN(f, a_sgn, a);
+    if (b_exp == 32767 && (b.x0 | b.x1 << 16))
+        return fp3_convert_NaN(f, b_sgn, b);
+
+    return 0;
+}
+
+static void f3_unpack(int *sgn, int32_t *exp, u128_t *mnt, long double f)
+{
+    u128_t x;
+    memcpy(&x, &f, 16);
+    *sgn = x.x1 >> 63;
+    *exp = x.x1 >> 48 & 32767;
+    x.x1 = x.x1 << 16 >> 16;
+    if (*exp)
+        x.x1 |= (uint64_t)1 << 48;
+    else
+        *exp = 1;
+    *mnt = x;
+}
+
+static u128_t f3_normalise(int32_t *exp, u128_t mnt)
+{
+    int sh;
+    if (!(mnt.x0 | mnt.x1))
+        return mnt;
+    if (!mnt.x1) {
+        mnt.x1 = mnt.x0;
+        mnt.x0 = 0;
+        *exp -= 64;
+    }
+    for (sh = 32; sh; sh >>= 1) {
+        if (!(mnt.x1 >> (64 - sh))) {
+            mnt.x1 = mnt.x1 << sh | mnt.x0 >> (64 - sh);
+            mnt.x0 = mnt.x0 << sh;
+            *exp -= sh;
+        }
+    }
+    return mnt;
+}
+
+static u128_t f3_sticky_shift(int32_t sh, u128_t x)
+{
+  if (sh >= 128) {
+      x.x0 = !!(x.x0 | x.x1);
+      x.x1 = 0;
+      return x;
+  }
+  if (sh >= 64) {
+      x.x0 = x.x1 | !!x.x0;
+      x.x1 = 0;
+      sh -= 64;
+  }
+  if (sh > 0) {
+      x.x0 = x.x0 >> sh | x.x1 << (64 - sh) | !!(x.x0 << (64 - sh));
+      x.x1 = x.x1 >> sh;
+  }
+  return x;
+}
+
+static long double f3_round(int sgn, int32_t exp, u128_t x)
+{
+    long double f;
+    int error;
+
+    if (exp > 0) {
+        x = f3_sticky_shift(13, x);
+    }
+    else {
+        x = f3_sticky_shift(14 - exp, x);
+        exp = 0;
+    }
+
+    error = x.x0 & 3;
+    x.x0 = x.x0 >> 2 | x.x1 << 62;
+    x.x1 = x.x1 >> 2;
+
+    if (error == 3 || ((error == 2) & (x.x0 & 1))) {
+        if (!++x.x0) {
+            ++x.x1;
+            if (x.x1 == (uint64_t)1 << 48)
+                exp = 1;
+            else if (x.x1 == (uint64_t)1 << 49) {
+                ++exp;
+                x.x0 = x.x0 >> 1 | x.x1 << 63;
+                x.x1 = x.x1 >> 1;
+            }
+        }
+    }
+
+    if (exp >= 32767)
+        return f3_infinity(sgn);
+
+    x.x1 = x.x1 << 16 >> 16 | (uint64_t)exp << 48 | (uint64_t)sgn << 63;
+    memcpy(&f, &x, 16);
+    return f;
+}
+
+static long double f3_add(long double fa, long double fb, int neg)
+{
+    u128_t a, b, x;
+    int32_t a_exp, b_exp, x_exp;
+    int a_sgn, b_sgn, x_sgn;
+    long double fx;
+
+    f3_unpack(&a_sgn, &a_exp, &a, fa);
+    f3_unpack(&b_sgn, &b_exp, &b, fb);
+
+    if (fp3_detect_NaNs(&fx, a_sgn, a_exp, a, b_sgn, b_exp, b))
+        return fx;
+
+    b_sgn ^= neg;
+
+    // Handle infinities and zeroes:
+    if (a_exp == 32767 && b_exp == 32767 && a_sgn != b_sgn)
+        return f3_NaN();
+    if (a_exp == 32767)
+        return f3_infinity(a_sgn);
+    if (b_exp == 32767)
+        return f3_infinity(b_sgn);
+    if (!(a.x0 | a.x1 | b.x0 | b.x1))
+        return f3_zero(a_sgn & b_sgn);
+
+    a.x1 = a.x1 << 3 | a.x0 >> 61;
+    a.x0 = a.x0 << 3;
+    b.x1 = b.x1 << 3 | b.x0 >> 61;
+    b.x0 = b.x0 << 3;
+
+    if (a_exp <= b_exp) {
+        a = f3_sticky_shift(b_exp - a_exp, a);
+        a_exp = b_exp;
+    }
+    else {
+        b = f3_sticky_shift(a_exp - b_exp, b);
+        b_exp = a_exp;
+    }
+
+    x_sgn = a_sgn;
+    x_exp = a_exp;
+    if (a_sgn == b_sgn) {
+        x.x0 = a.x0 + b.x0;
+        x.x1 = a.x1 + b.x1 + (x.x0 < a.x0);
+    }
+    else {
+        x.x0 = a.x0 - b.x0;
+        x.x1 = a.x1 - b.x1 - (x.x0 > a.x0);
+        if (x.x1 >> 63) {
+            x_sgn ^= 1;
+            x.x0 = -x.x0;
+            x.x1 = -x.x1 - !!x.x0;
+        }
+    }
+
+    if (!(x.x0 | x.x1))
+        return f3_zero(0);
+
+    x = f3_normalise(&x_exp, x);
+
+    return f3_round(x_sgn, x_exp + 12, x);
+}
+
+long double __addtf3(long double a, long double b)
+{
+    return f3_add(a, b, 0);
+}
+
+long double __subtf3(long double a, long double b)
+{
+    return f3_add(a, b, 1);
+}
+
+long double __multf3(long double fa, long double fb)
+{
+    u128_t a, b, x;
+    int32_t a_exp, b_exp, x_exp;
+    int a_sgn, b_sgn, x_sgn;
+    long double fx;
+
+    f3_unpack(&a_sgn, &a_exp, &a, fa);
+    f3_unpack(&b_sgn, &b_exp, &b, fb);
+
+    if (fp3_detect_NaNs(&fx, a_sgn, a_exp, a, b_sgn, b_exp, b))
+        return fx;
+
+    // Handle infinities and zeroes:
+    if ((a_exp == 32767 && !(b.x0 | b.x1)) ||
+        (b_exp == 32767 && !(a.x0 | a.x1)))
+        return f3_NaN();
+    if (a_exp == 32767 || b_exp == 32767)
+        return f3_infinity(a_sgn ^ b_sgn);
+    if (!(a.x0 | a.x1) || !(b.x0 | b.x1))
+        return f3_zero(a_sgn ^ b_sgn);
+
+    a = f3_normalise(&a_exp, a);
+    b = f3_normalise(&b_exp, b);
+
+    x_sgn = a_sgn ^ b_sgn;
+    x_exp = a_exp + b_exp - 16352;
+
+    {
+        // Convert to base (1 << 30), discarding bottom 6 bits, which are zero,
+        // so there are (32, 30, 30, 30) bits in (a3, a2, a1, a0):
+        uint64_t a0 = a.x0 << 28 >> 34;
+        uint64_t b0 = b.x0 << 28 >> 34;
+        uint64_t a1 = a.x0 >> 36 | a.x1 << 62 >> 34;
+        uint64_t b1 = b.x0 >> 36 | b.x1 << 62 >> 34;
+        uint64_t a2 = a.x1 << 32 >> 34;
+        uint64_t b2 = b.x1 << 32 >> 34;
+        uint64_t a3 = a.x1 >> 32;
+        uint64_t b3 = b.x1 >> 32;
+        // Use 16 small multiplications and additions that do not overflow:
+        uint64_t x0 = a0 * b0;
+        uint64_t x1 = (x0 >> 30) + a0 * b1 + a1 * b0;
+        uint64_t x2 = (x1 >> 30) + a0 * b2 + a1 * b1 + a2 * b0;
+        uint64_t x3 = (x2 >> 30) + a0 * b3 + a1 * b2 + a2 * b1 + a3 * b0;
+        uint64_t x4 = (x3 >> 30) + a1 * b3 + a2 * b2 + a3 * b1;
+        uint64_t x5 = (x4 >> 30) + a2 * b3 + a3 * b2;
+        uint64_t x6 = (x5 >> 30) + a3 * b3;
+        // We now have (64, 30, 30, ...) bits in (x6, x5, x4, ...).
+        // Take the top 128 bits, setting bottom bit if any lower bits were set:
+        uint64_t y0 = (x5 << 34 | x4 << 34 >> 30 | x3 << 34 >> 60 |
+                       !!(x3 << 38 | (x2 | x1 | x0) << 34));
+        uint64_t y1 = x6;
+        // Top bit may be zero. Renormalise:
+        if (!(y1 >> 63)) {
+            y1 = y1 << 1 | y0 >> 63;
+            y0 = y0 << 1;
+            --x_exp;
+        }
+        x.x0 = y0;
+        x.x1 = y1;
+    }
+
+    return f3_round(x_sgn, x_exp, x);
+}
+
+long double __divtf3(long double fa, long double fb)
+{
+    u128_t a, b, x;
+    int32_t a_exp, b_exp, x_exp;
+    int a_sgn, b_sgn, x_sgn, i;
+    long double fx;
+
+    f3_unpack(&a_sgn, &a_exp, &a, fa);
+    f3_unpack(&b_sgn, &b_exp, &b, fb);
+
+    if (fp3_detect_NaNs(&fx, a_sgn, a_exp, a, b_sgn, b_exp, b))
+        return fx;
+
+    // Handle infinities and zeroes:
+    if ((a_exp == 32767 && b_exp == 32767) ||
+        (!(a.x0 | a.x1) && !(b.x0 | b.x1)))
+        return f3_NaN();
+    if (a_exp == 32767 || !(b.x0 | b.x1))
+        return f3_infinity(a_sgn ^ b_sgn);
+    if (!(a.x0 | a.x1) || b_exp == 32767)
+        return f3_zero(a_sgn ^ b_sgn);
+
+    a = f3_normalise(&a_exp, a);
+    b = f3_normalise(&b_exp, b);
+
+    x_sgn = a_sgn ^ b_sgn;
+    x_exp = a_exp - b_exp + 16395;
+
+    a.x0 = a.x0 >> 1 | a.x1 << 63;
+    a.x1 = a.x1 >> 1;
+    b.x0 = b.x0 >> 1 | b.x1 << 63;
+    b.x1 = b.x1 >> 1;
+    x.x0 = 0;
+    x.x1 = 0;
+    for (i = 0; i < 116; i++) {
+        x.x1 = x.x1 << 1 | x.x0 >> 63;
+        x.x0 = x.x0 << 1;
+        if (a.x1 > b.x1 || (a.x1 == b.x1 && a.x0 >= b.x0)) {
+            a.x1 = a.x1 - b.x1 - (a.x0 < b.x0);
+            a.x0 = a.x0 - b.x0;
+            x.x0 |= 1;
+        }
+        a.x1 = a.x1 << 1 | a.x0 >> 63;
+        a.x0 = a.x0 << 1;
+    }
+    x.x0 |= !!(a.x0 | a.x1);
+
+    x = f3_normalise(&x_exp, x);
+
+    return f3_round(x_sgn, x_exp, x);
+}
+
+long double __extendsftf2(float f)
+{
+    long double fx;
+    u128_t x;
+    uint32_t a;
+    uint64_t aa;
+    memcpy(&a, &f, 4);
+    aa = a;
+    x.x0 = 0;
+    if (!(a << 1))
+        x.x1 = aa << 32;
+    else if (a << 1 >> 24 == 255)
+        x.x1 = (0x7fff000000000000 | aa >> 31 << 63 | aa << 41 >> 16 |
+                (uint64_t)!!(a << 9) << 47);
+    else
+        x.x1 = (aa >> 31 << 63 | ((aa >> 23 & 255) + 16256) << 48 |
+                aa << 41 >> 16);
+    memcpy(&fx, &x, 16);
+    return fx;
+}
+
+long double __extenddftf2(double f)
+{
+    long double fx;
+    u128_t x;
+    uint64_t a;
+    memcpy(&a, &f, 8);
+    x.x0 = a << 60;
+    if (!(a << 1))
+        x.x1 = a;
+    else if (a << 1 >> 53 == 2047)
+        x.x1 = (0x7fff000000000000 | a >> 63 << 63 | a << 12 >> 16 |
+                (uint64_t)!!(a << 12) << 47);
+    else
+        x.x1 = a >> 63 << 63 | ((a >> 52 & 2047) + 15360) << 48 | a << 12 >> 16;
+    memcpy(&fx, &x, 16);
+    return fx;
+}
+
+float __trunctfsf2(long double f)
+{
+    u128_t mnt;
+    int32_t exp;
+    int sgn;
+    uint32_t x;
+    float fx;
+
+    f3_unpack(&sgn, &exp, &mnt, f);
+
+    if (exp == 32767 && (mnt.x0 | mnt.x1 << 16))
+        x = 0x7fc00000 | (uint32_t)sgn << 31 | (mnt.x1 >> 25 & 0x007fffff);
+    else if (exp > 16510)
+        x = 0x7f800000 | (uint32_t)sgn << 31;
+    else if (exp < 16233)
+        x = (uint32_t)sgn << 31;
+    else {
+        exp -= 16257;
+        x = mnt.x1 >> 23 | !!(mnt.x0 | mnt.x1 << 41);
+        if (exp < 0) {
+            x = x >> -exp | !!(x << (32 + exp));
+            exp = 0;
+        }
+        if ((x & 3) == 3 || (x & 7) == 6)
+            x += 4;
+        x = ((x >> 2) + (exp << 23)) | (uint32_t)sgn << 31;
+    }
+    memcpy(&fx, &x, 4);
+    return fx;
+}
+
+double __trunctfdf2(long double f)
+{
+    u128_t mnt;
+    int32_t exp;
+    int sgn;
+    uint64_t x;
+    double fx;
+
+    f3_unpack(&sgn, &exp, &mnt, f);
+
+    if (exp == 32767 && (mnt.x0 | mnt.x1 << 16))
+        x = (0x7ff8000000000000 | (uint64_t)sgn << 63 |
+             mnt.x1 << 16 >> 12 | mnt.x0 >> 60);
+    else if (exp > 17406)
+        x = 0x7ff0000000000000 | (uint64_t)sgn << 63;
+    else if (exp < 15308)
+        x = (uint64_t)sgn << 63;
+    else {
+        exp -= 15361;
+        x = mnt.x1 << 6 | mnt.x0 >> 58 | !!(mnt.x0 << 6);
+        if (exp < 0) {
+            x = x >> -exp | !!(x << (64 + exp));
+            exp = 0;
+        }
+        if ((x & 3) == 3 || (x & 7) == 6)
+            x += 4;
+        x = ((x >> 2) + ((uint64_t)exp << 52)) | (uint64_t)sgn << 63;
+    }
+    memcpy(&fx, &x, 8);
+    return fx;
+}
+
+int32_t __fixtfsi(long double fa)
+{
+    u128_t a;
+    int32_t a_exp;
+    int a_sgn;
+    int32_t x;
+    f3_unpack(&a_sgn, &a_exp, &a, fa);
+    if (a_exp < 16369)
+        return 0;
+    if (a_exp > 16413)
+        return a_sgn ? -0x80000000 : 0x7fffffff;
+    x = a.x1 >> (16431 - a_exp);
+    return a_sgn ? -x : x;
+}
+
+int64_t __fixtfdi(long double fa)
+{
+    u128_t a;
+    int32_t a_exp;
+    int a_sgn;
+    int64_t x;
+    f3_unpack(&a_sgn, &a_exp, &a, fa);
+    if (a_exp < 16383)
+        return 0;
+    if (a_exp > 16445)
+        return a_sgn ? -0x8000000000000000 : 0x7fffffffffffffff;
+    x = (a.x1 << 15 | a.x0 >> 49) >> (16446 - a_exp);
+    return a_sgn ? -x : x;
+}
+
+uint32_t __fixunstfsi(long double fa)
+{
+    u128_t a;
+    int32_t a_exp;
+    int a_sgn;
+    f3_unpack(&a_sgn, &a_exp, &a, fa);
+    if (a_sgn || a_exp < 16369)
+        return 0;
+    if (a_exp > 16414)
+        return -1;
+    return a.x1 >> (16431 - a_exp);
+}
+
+uint64_t __fixunstfdi(long double fa)
+{
+    u128_t a;
+    int32_t a_exp;
+    int a_sgn;
+    f3_unpack(&a_sgn, &a_exp, &a, fa);
+    if (a_sgn || a_exp < 16383)
+        return 0;
+    if (a_exp > 16446)
+        return -1;
+    return (a.x1 << 15 | a.x0 >> 49) >> (16446 - a_exp);
+}
+
+long double __floatsitf(int32_t a)
+{
+    int sgn = 0;
+    int exp = 16414;
+    uint32_t mnt = a;
+    u128_t x = { 0, 0 };
+    long double f;
+    int i;
+    if (a) {
+        if (a < 0) {
+            sgn = 1;
+            mnt = -mnt;
+        }
+        for (i = 16; i; i >>= 1)
+            if (!(mnt >> (32 - i))) {
+                mnt <<= i;
+                exp -= i;
+            }
+        x.x1 = ((uint64_t)sgn << 63 | (uint64_t)exp << 48 |
+                (uint64_t)(mnt << 1) << 16);
+    }
+    memcpy(&f, &x, 16);
+    return f;
+}
+
+long double __floatditf(int64_t a)
+{
+    int sgn = 0;
+    int exp = 16446;
+    uint64_t mnt = a;
+    u128_t x = { 0, 0 };
+    long double f;
+    int i;
+    if (a) {
+        if (a < 0) {
+            sgn = 1;
+            mnt = -mnt;
+        }
+        for (i = 32; i; i >>= 1)
+            if (!(mnt >> (64 - i))) {
+                mnt <<= i;
+                exp -= i;
+            }
+        x.x0 = mnt << 49;
+        x.x1 = (uint64_t)sgn << 63 | (uint64_t)exp << 48 | mnt << 1 >> 16;
+    }
+    memcpy(&f, &x, 16);
+    return f;
+}
+
+long double __floatunsitf(uint32_t a)
+{
+    int exp = 16414;
+    uint32_t mnt = a;
+    u128_t x = { 0, 0 };
+    long double f;
+    int i;
+    if (a) {
+        for (i = 16; i; i >>= 1)
+            if (!(mnt >> (32 - i))) {
+                mnt <<= i;
+                exp -= i;
+            }
+        x.x1 = (uint64_t)exp << 48 | (uint64_t)(mnt << 1) << 16;
+    }
+    memcpy(&f, &x, 16);
+    return f;
+}
+
+long double __floatunditf(uint64_t a)
+{
+    int exp = 16446;
+    uint64_t mnt = a;
+    u128_t x = { 0, 0 };
+    long double f;
+    int i;
+    if (a) {
+        for (i = 32; i; i >>= 1)
+            if (!(mnt >> (64 - i))) {
+                mnt <<= i;
+                exp -= i;
+            }
+        x.x0 = mnt << 49;
+        x.x1 = (uint64_t)exp << 48 | mnt << 1 >> 16;
+    }
+    memcpy(&f, &x, 16);
+    return f;
+}
+
+static int f3_cmp(long double fa, long double fb)
+{
+    u128_t a, b;
+    memcpy(&a, &fa, 16);
+    memcpy(&b, &fb, 16);
+    return (!(a.x0 | a.x1 << 1 | b.x0 | b.x1 << 1) ? 0 :
+            ((a.x1 << 1 >> 49 == 0x7fff && (a.x0 | a.x1 << 16)) ||
+             (b.x1 << 1 >> 49 == 0x7fff && (b.x0 | b.x1 << 16))) ? 2 :
+            a.x1 >> 63 != b.x1 >> 63 ? (int)(b.x1 >> 63) - (int)(a.x1 >> 63) :
+            a.x1 < b.x1 ? (int)(a.x1 >> 63 << 1) - 1 :
+            a.x1 > b.x1 ? 1 - (int)(a.x1 >> 63 << 1) :
+            a.x0 < b.x0 ? (int)(a.x1 >> 63 << 1) - 1 :
+            b.x0 < a.x0 ? 1 - (int)(a.x1 >> 63 << 1) : 0);
+}
+
+int __eqtf2(long double a, long double b)
+{
+    return !!f3_cmp(a, b);
+}
+
+int __netf2(long double a, long double b)
+{
+    return !!f3_cmp(a, b);
+}
+
+int __lttf2(long double a, long double b)
+{
+    return f3_cmp(a, b);
+}
+
+int __letf2(long double a, long double b)
+{
+    return f3_cmp(a, b);
+}
+
+int __gttf2(long double a, long double b)
+{
+    return -f3_cmp(b, a);
+}
+
+int __getf2(long double a, long double b)
+{
+    return -f3_cmp(b, a);
+}
-- 
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