ref: ee4955c879ef4c95c9cd15650fd9768a08c5fda4
parent: 5797fdc0c0206e5e006e37597662b9a7b308d74d
author: Russ Cox <rsc@swtch.com>
date: Sun May 21 12:35:53 EDT 2006
posix-amd64 changes
--- /dev/null
+++ b/posix-amd64/Makefile
@@ -1,0 +1,17 @@
+ROOT=..
+include ../Make.config
+LIB=../libmachdep.a
+
+OFILES=\
+ getcallerpc.$O\
+ md5block.$O\
+ sha1block.$O\
+ tas.$O
+
+default: $(LIB)
+$(LIB): $(OFILES)
+ $(AR) r $(LIB) $(OFILES)
+ $(RANLIB) $(LIB)
+
+%.$O: %.c
+ $(CC) $(CFLAGS) $*.c
--- /dev/null
+++ b/posix-amd64/getcallerpc.c
@@ -1,0 +1,8 @@
+#include "u.h"
+#include "libc.h"
+
+ulong
+getcallerpc(void *a)
+{+ return ((ulong*)a)[-1];
+}
--- /dev/null
+++ b/posix-amd64/md5block.c
@@ -1,0 +1,268 @@
+#include <u.h>
+#include <libc.h>
+#include <libsec.h>
+
+/*
+ * rfc1321 requires that I include this. The code is new. The constants
+ * all come from the rfc (hence the copyright). We trade a table for the
+ * macros in rfc. The total size is a lot less. -- presotto
+ *
+ * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+ * rights reserved.
+ *
+ * License to copy and use this software is granted provided that it
+ * is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+ * Algorithm" in all material mentioning or referencing this software
+ * or this function.
+ *
+ * License is also granted to make and use derivative works provided
+ * that such works are identified as "derived from the RSA Data
+ * Security, Inc. MD5 Message-Digest Algorithm" in all material
+ * mentioning or referencing the derived work.
+ *
+ * RSA Data Security, Inc. makes no representations concerning either
+ * the merchantability of this software or the suitability of this
+ * software forany particular purpose. It is provided "as is"
+ * without express or implied warranty of any kind.
+ * These notices must be retained in any copies of any part of this
+ * documentation and/or software.
+ */
+
+/*
+ * Rotate ammounts used in the algorithm
+ */
+enum
+{+ S11= 7,
+ S12= 12,
+ S13= 17,
+ S14= 22,
+
+ S21= 5,
+ S22= 9,
+ S23= 14,
+ S24= 20,
+
+ S31= 4,
+ S32= 11,
+ S33= 16,
+ S34= 23,
+
+ S41= 6,
+ S42= 10,
+ S43= 15,
+ S44= 21,
+};
+
+static u32int md5tab[] =
+{+ /* round 1 */
+/*[0]*/ 0xd76aa478,
+ 0xe8c7b756,
+ 0x242070db,
+ 0xc1bdceee,
+ 0xf57c0faf,
+ 0x4787c62a,
+ 0xa8304613,
+ 0xfd469501,
+ 0x698098d8,
+ 0x8b44f7af,
+ 0xffff5bb1,
+ 0x895cd7be,
+ 0x6b901122,
+ 0xfd987193,
+ 0xa679438e,
+ 0x49b40821,
+
+ /* round 2 */
+/*[16]*/0xf61e2562,
+ 0xc040b340,
+ 0x265e5a51,
+ 0xe9b6c7aa,
+ 0xd62f105d,
+ 0x2441453,
+ 0xd8a1e681,
+ 0xe7d3fbc8,
+ 0x21e1cde6,
+ 0xc33707d6,
+ 0xf4d50d87,
+ 0x455a14ed,
+ 0xa9e3e905,
+ 0xfcefa3f8,
+ 0x676f02d9,
+ 0x8d2a4c8a,
+
+ /* round 3 */
+/*[32]*/0xfffa3942,
+ 0x8771f681,
+ 0x6d9d6122,
+ 0xfde5380c,
+ 0xa4beea44,
+ 0x4bdecfa9,
+ 0xf6bb4b60,
+ 0xbebfbc70,
+ 0x289b7ec6,
+ 0xeaa127fa,
+ 0xd4ef3085,
+ 0x4881d05,
+ 0xd9d4d039,
+ 0xe6db99e5,
+ 0x1fa27cf8,
+ 0xc4ac5665,
+
+ /* round 4 */
+/*[48]*/0xf4292244,
+ 0x432aff97,
+ 0xab9423a7,
+ 0xfc93a039,
+ 0x655b59c3,
+ 0x8f0ccc92,
+ 0xffeff47d,
+ 0x85845dd1,
+ 0x6fa87e4f,
+ 0xfe2ce6e0,
+ 0xa3014314,
+ 0x4e0811a1,
+ 0xf7537e82,
+ 0xbd3af235,
+ 0x2ad7d2bb,
+ 0xeb86d391,
+};
+
+static void decode(u32int*, uchar*, ulong);
+extern void _md5block(uchar *p, ulong len, u32int *s);
+
+void
+_md5block(uchar *p, ulong len, u32int *s)
+{+ u32int a, b, c, d, sh;
+ u32int *t;
+ uchar *end;
+ u32int x[16];
+
+ for(end = p+len; p < end; p += 64){+ a = s[0];
+ b = s[1];
+ c = s[2];
+ d = s[3];
+
+ decode(x, p, 64);
+
+ t = md5tab;
+ sh = 0;
+ for(; sh != 16; t += 4){+ a += ((c ^ d) & b) ^ d;
+ a += x[sh] + t[0];
+ a = (a << S11) | (a >> (32 - S11));
+ a += b;
+
+ d += ((b ^ c) & a) ^ c;
+ d += x[sh + 1] + t[1];
+ d = (d << S12) | (d >> (32 - S12));
+ d += a;
+
+ c += ((a ^ b) & d) ^ b;
+ c += x[sh + 2] + t[2];
+ c = (c << S13) | (c >> (32 - S13));
+ c += d;
+
+ b += ((d ^ a) & c) ^ a;
+ b += x[sh + 3] + t[3];
+ b = (b << S14) | (b >> (32 - S14));
+ b += c;
+
+ sh += 4;
+ }
+ sh = 1;
+ for(; sh != 1+20*4; t += 4){+ a += ((b ^ c) & d) ^ c;
+ a += x[sh & 0xf] + t[0];
+ a = (a << S21) | (a >> (32 - S21));
+ a += b;
+
+ d += ((a ^ b) & c) ^ b;
+ d += x[(sh + 5) & 0xf] + t[1];
+ d = (d << S22) | (d >> (32 - S22));
+ d += a;
+
+ c += ((d ^ a) & b) ^ a;
+ c += x[(sh + 10) & 0xf] + t[2];
+ c = (c << S23) | (c >> (32 - S23));
+ c += d;
+
+ b += ((c ^ d) & a) ^ d;
+ b += x[(sh + 15) & 0xf] + t[3];
+ b = (b << S24) | (b >> (32 - S24));
+ b += c;
+
+ sh += 20;
+ }
+ sh = 5;
+ for(; sh != 5+12*4; t += 4){+ a += b ^ c ^ d;
+ a += x[sh & 0xf] + t[0];
+ a = (a << S31) | (a >> (32 - S31));
+ a += b;
+
+ d += a ^ b ^ c;
+ d += x[(sh + 3) & 0xf] + t[1];
+ d = (d << S32) | (d >> (32 - S32));
+ d += a;
+
+ c += d ^ a ^ b;
+ c += x[(sh + 6) & 0xf] + t[2];
+ c = (c << S33) | (c >> (32 - S33));
+ c += d;
+
+ b += c ^ d ^ a;
+ b += x[(sh + 9) & 0xf] + t[3];
+ b = (b << S34) | (b >> (32 - S34));
+ b += c;
+
+ sh += 12;
+ }
+ sh = 0;
+ for(; sh != 28*4; t += 4){+ a += c ^ (b | ~d);
+ a += x[sh & 0xf] + t[0];
+ a = (a << S41) | (a >> (32 - S41));
+ a += b;
+
+ d += b ^ (a | ~c);
+ d += x[(sh + 7) & 0xf] + t[1];
+ d = (d << S42) | (d >> (32 - S42));
+ d += a;
+
+ c += a ^ (d | ~b);
+ c += x[(sh + 14) & 0xf] + t[2];
+ c = (c << S43) | (c >> (32 - S43));
+ c += d;
+
+ b += d ^ (c | ~a);
+ b += x[(sh + 21) & 0xf] + t[3];
+ b = (b << S44) | (b >> (32 - S44));
+ b += c;
+
+ sh += 28;
+ }
+
+ s[0] += a;
+ s[1] += b;
+ s[2] += c;
+ s[3] += d;
+ }
+}
+
+/*
+ * decodes input (uchar) into output (u32int). Assumes len is
+ * a multiple of 4.
+ */
+static void
+decode(u32int *output, uchar *input, ulong len)
+{+ uchar *e;
+
+ for(e = input+len; input < e; input += 4)
+ *output++ = input[0] | (input[1] << 8) |
+ (input[2] << 16) | (input[3] << 24);
+}
--- /dev/null
+++ b/posix-amd64/sha1block.c
@@ -1,0 +1,189 @@
+#include <u.h>
+#include <libc.h>
+#include <libsec.h>
+
+void
+_sha1block(uchar *p, ulong len, u32int *s)
+{+ u32int a, b, c, d, e, x;
+ uchar *end;
+ u32int *wp, *wend;
+ u32int w[80];
+
+ /* at this point, we have a multiple of 64 bytes */
+ for(end = p+len; p < end;){+ a = s[0];
+ b = s[1];
+ c = s[2];
+ d = s[3];
+ e = s[4];
+
+ wend = w + 15;
+ for(wp = w; wp < wend; wp += 5){+ wp[0] = (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3];
+ e += ((a<<5) | (a>>27)) + wp[0];
+ e += 0x5a827999 + (((c^d)&b)^d);
+ b = (b<<30)|(b>>2);
+
+ wp[1] = (p[4]<<24) | (p[5]<<16) | (p[6]<<8) | p[7];
+ d += ((e<<5) | (e>>27)) + wp[1];
+ d += 0x5a827999 + (((b^c)&a)^c);
+ a = (a<<30)|(a>>2);
+
+ wp[2] = (p[8]<<24) | (p[9]<<16) | (p[10]<<8) | p[11];
+ c += ((d<<5) | (d>>27)) + wp[2];
+ c += 0x5a827999 + (((a^b)&e)^b);
+ e = (e<<30)|(e>>2);
+
+ wp[3] = (p[12]<<24) | (p[13]<<16) | (p[14]<<8) | p[15];
+ b += ((c<<5) | (c>>27)) + wp[3];
+ b += 0x5a827999 + (((e^a)&d)^a);
+ d = (d<<30)|(d>>2);
+
+ wp[4] = (p[16]<<24) | (p[17]<<16) | (p[18]<<8) | p[19];
+ a += ((b<<5) | (b>>27)) + wp[4];
+ a += 0x5a827999 + (((d^e)&c)^e);
+ c = (c<<30)|(c>>2);
+
+ p += 20;
+ }
+
+ wp[0] = (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3];
+ e += ((a<<5) | (a>>27)) + wp[0];
+ e += 0x5a827999 + (((c^d)&b)^d);
+ b = (b<<30)|(b>>2);
+
+ x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15];
+ wp[1] = (x<<1) | (x>>31);
+ d += ((e<<5) | (e>>27)) + wp[1];
+ d += 0x5a827999 + (((b^c)&a)^c);
+ a = (a<<30)|(a>>2);
+
+ x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14];
+ wp[2] = (x<<1) | (x>>31);
+ c += ((d<<5) | (d>>27)) + wp[2];
+ c += 0x5a827999 + (((a^b)&e)^b);
+ e = (e<<30)|(e>>2);
+
+ x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13];
+ wp[3] = (x<<1) | (x>>31);
+ b += ((c<<5) | (c>>27)) + wp[3];
+ b += 0x5a827999 + (((e^a)&d)^a);
+ d = (d<<30)|(d>>2);
+
+ x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12];
+ wp[4] = (x<<1) | (x>>31);
+ a += ((b<<5) | (b>>27)) + wp[4];
+ a += 0x5a827999 + (((d^e)&c)^e);
+ c = (c<<30)|(c>>2);
+
+ wp += 5;
+ p += 4;
+
+ wend = w + 40;
+ for(; wp < wend; wp += 5){+ x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16];
+ wp[0] = (x<<1) | (x>>31);
+ e += ((a<<5) | (a>>27)) + wp[0];
+ e += 0x6ed9eba1 + (b^c^d);
+ b = (b<<30)|(b>>2);
+
+ x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15];
+ wp[1] = (x<<1) | (x>>31);
+ d += ((e<<5) | (e>>27)) + wp[1];
+ d += 0x6ed9eba1 + (a^b^c);
+ a = (a<<30)|(a>>2);
+
+ x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14];
+ wp[2] = (x<<1) | (x>>31);
+ c += ((d<<5) | (d>>27)) + wp[2];
+ c += 0x6ed9eba1 + (e^a^b);
+ e = (e<<30)|(e>>2);
+
+ x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13];
+ wp[3] = (x<<1) | (x>>31);
+ b += ((c<<5) | (c>>27)) + wp[3];
+ b += 0x6ed9eba1 + (d^e^a);
+ d = (d<<30)|(d>>2);
+
+ x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12];
+ wp[4] = (x<<1) | (x>>31);
+ a += ((b<<5) | (b>>27)) + wp[4];
+ a += 0x6ed9eba1 + (c^d^e);
+ c = (c<<30)|(c>>2);
+ }
+
+ wend = w + 60;
+ for(; wp < wend; wp += 5){+ x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16];
+ wp[0] = (x<<1) | (x>>31);
+ e += ((a<<5) | (a>>27)) + wp[0];
+ e += 0x8f1bbcdc + ((b&c)|((b|c)&d));
+ b = (b<<30)|(b>>2);
+
+ x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15];
+ wp[1] = (x<<1) | (x>>31);
+ d += ((e<<5) | (e>>27)) + wp[1];
+ d += 0x8f1bbcdc + ((a&b)|((a|b)&c));
+ a = (a<<30)|(a>>2);
+
+ x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14];
+ wp[2] = (x<<1) | (x>>31);
+ c += ((d<<5) | (d>>27)) + wp[2];
+ c += 0x8f1bbcdc + ((e&a)|((e|a)&b));
+ e = (e<<30)|(e>>2);
+
+ x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13];
+ wp[3] = (x<<1) | (x>>31);
+ b += ((c<<5) | (c>>27)) + wp[3];
+ b += 0x8f1bbcdc + ((d&e)|((d|e)&a));
+ d = (d<<30)|(d>>2);
+
+ x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12];
+ wp[4] = (x<<1) | (x>>31);
+ a += ((b<<5) | (b>>27)) + wp[4];
+ a += 0x8f1bbcdc + ((c&d)|((c|d)&e));
+ c = (c<<30)|(c>>2);
+ }
+
+ wend = w + 80;
+ for(; wp < wend; wp += 5){+ x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16];
+ wp[0] = (x<<1) | (x>>31);
+ e += ((a<<5) | (a>>27)) + wp[0];
+ e += 0xca62c1d6 + (b^c^d);
+ b = (b<<30)|(b>>2);
+
+ x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15];
+ wp[1] = (x<<1) | (x>>31);
+ d += ((e<<5) | (e>>27)) + wp[1];
+ d += 0xca62c1d6 + (a^b^c);
+ a = (a<<30)|(a>>2);
+
+ x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14];
+ wp[2] = (x<<1) | (x>>31);
+ c += ((d<<5) | (d>>27)) + wp[2];
+ c += 0xca62c1d6 + (e^a^b);
+ e = (e<<30)|(e>>2);
+
+ x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13];
+ wp[3] = (x<<1) | (x>>31);
+ b += ((c<<5) | (c>>27)) + wp[3];
+ b += 0xca62c1d6 + (d^e^a);
+ d = (d<<30)|(d>>2);
+
+ x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12];
+ wp[4] = (x<<1) | (x>>31);
+ a += ((b<<5) | (b>>27)) + wp[4];
+ a += 0xca62c1d6 + (c^d^e);
+ c = (c<<30)|(c>>2);
+ }
+
+ /* save state */
+ s[0] += a;
+ s[1] += b;
+ s[2] += c;
+ s[3] += d;
+ s[4] += e;
+ }
+}
--- /dev/null
+++ b/posix-amd64/tas.c
@@ -1,0 +1,23 @@
+#include "u.h"
+#include "libc.h"
+
+int
+tas(long *x)
+{+ int v;
+
+ __asm__( "movl $1, %%eax\n\t"
+ "xchgl %%eax,(%%rcx)"
+ : "=a" (v)
+ : "c" (x)
+ );
+ switch(v) {+ case 0:
+ case 1:
+ return v;
+ default:
+ print("canlock: corrupted 0x%lux\n", v);+ return 1;
+ }
+}
+