--- /dev/null
+
+#include <assert.h>
+#include <stdio.h>
+#include <malloc.h>
+
+typedef unsigned int UInt;
+typedef unsigned long long int ULong;
+
+typedef
+ struct {
+ double fres;
+ UInt cr;
+ UInt fpscr;
+ }
+ Result;
+
+
+static void set_NEAREST ( void ) {
+ __asm__ __volatile__("mtfsb0 30 ; mtfsb0 31");
+}
+static void set_ZERO ( void ) {
+ __asm__ __volatile__("mtfsb0 30 ; mtfsb1 31");
+}
+static void set_PosINF ( void ) {
+ __asm__ __volatile__("mtfsb1 30 ; mtfsb0 31");
+}
+static void set_NegINF ( void ) {
+ __asm__ __volatile__("mtfsb1 30 ; mtfsb1 31");
+}
+
+
+static ULong double_as_ULong ( double d )
+{
+ union { double dd; ULong ll; } u;
+ assert(sizeof(u) == 8);
+ u.dd = d;
+ return u.ll;
+}
+
+static ULong round_with_mask ( ULong x, ULong mask )
+{
+ if (mask == 1) {
+ switch (x & 1) {
+ case 0: return x;
+ case 1: return x+1;
+ }
+ assert(0);
+ }
+
+ if (mask == 3) {
+ switch (x & 3) {
+ case 0: return x;
+ case 1: return x-1;
+ case 2: return x+2;
+ case 3: return x+1;
+ }
+ assert(0);
+ }
+
+ if (mask == 7) {
+ switch (x & 7) {
+ case 0: return x;
+ case 1: return x-1;
+ case 2: return x-2;
+ case 3: return x-3;
+ case 4: return x+4;
+ case 5: return x+3;
+ case 6: return x+2;
+ case 7: return x+1;
+ }
+ assert(0);
+ }
+
+ if (mask == 15) {
+ switch (x & 15) {
+ case 0: return x;
+ case 1: return x-1;
+ case 2: return x-2;
+ case 3: return x-3;
+ case 4: return x-4;
+ case 5: return x-5;
+ case 6: return x-6;
+ case 7: return x-7;
+ case 8: return x+8;
+ case 9: return x+7;
+ case 10: return x+6;
+ case 11: return x+5;
+ case 12: return x+4;
+ case 13: return x+3;
+ case 14: return x+2;
+ case 15: return x+1;
+ }
+ assert(0);
+ }
+
+ assert(0);
+}
+
+static void showResult ( Result r, ULong hideMask )
+{
+ /* hidemask should have 1 for every result bit we **don't**
+ want to show. viz should be all zeroes normally. */
+#if 0
+ printf("(%016llx cr1 0x%01x fprf 0x%02x)",
+ double_as_ULong(r.fres) & ~hidemask,
+ (r.cr >> 24) & 0xF, (r.fpscr >> 12) & 0x1F);
+#else
+ printf("(%016llx cr1 ... fprf ...)",
+ (hideMask == 0x1 || hideMask == 0x3 || hideMask == 0x7)
+ ? round_with_mask( double_as_ULong(r.fres), hideMask )
+ : double_as_ULong(r.fres) & ~hideMask
+ );
+#endif
+}
+
+
+/* Give an insn string such as "fmadd %%f4, %%f1,%%f2,%%f3". Args are
+ in f1, f2, f3, and result should go in f4. */
+#define INSN(name,insn) \
+ \
+ static Result insn_##name ( double arg1, double arg2, double arg3 ) \
+ { \
+ struct { \
+ /* 0 */ double a1; \
+ /* 8 */ double a2; \
+ /* 16 */ double a3; \
+ /* 24 */ double res; \
+ /* 32 */ UInt fpscr_after; \
+ /* 36 */ UInt cr_after; \
+ } foo; \
+ assert(sizeof(foo) == 40); \
+ foo.a1 = foo.a2 = foo.a3 = foo.res = 0; \
+ foo.fpscr_after = foo.cr_after = 0; \
+ foo.a1 = arg1; \
+ foo.a2 = arg2; \
+ foo.a3 = arg3; \
+ __asm__ __volatile__( \
+ "lfd %%f1, 0(%0)\n\t" /* a1 */ \
+ "lfd %%f2, 8(%0)\n\t" /* a2 */ \
+ "lfd %%f3, 16(%0)\n\t" /* a3 */ \
+ insn "\n\t" \
+ "stfd %%f4, 24(%0)\n\t" /* res */ \
+ "mffs %%f4\n\t" \
+ "addi %0,%0,32\n\t" \
+ "stfiwx %%f4, %%r0,%0\n\t" /* fpscr_after. r0 reads as zero */ \
+ "addi %0,%0,-32\n\t" \
+ "mfcr %%r31\n\t" \
+ "stw %%r31, 36(%0)" /* cr_after */ \
+ : /*out*/ \
+ : /*in*/ "b" (&foo.a1) \
+ : /*trash*/ "memory","cc", "fr1","fr2","fr3","fr4", "r31" \
+ ); \
+ { Result result; \
+ result.fres = foo.res; \
+ result.cr = foo.cr_after; \
+ result.fpscr = foo.fpscr_after; \
+ return result; \
+ } \
+ }
+
+INSN(fabs, "fabs %%f4, %%f1");
+INSN(fabs_, "fabs. %%f4, %%f1");
+
+INSN(fnabs, "fnabs %%f4, %%f1");
+INSN(fnabs_, "fnabs. %%f4, %%f1");
+
+INSN(fadd, "fadd %%f4, %%f1,%%f2");
+INSN(fadd_, "fadd. %%f4, %%f1,%%f2");
+
+INSN(fadds, "fadds %%f4, %%f1,%%f2");
+INSN(fadds_, "fadds. %%f4, %%f1,%%f2");
+
+INSN(fcfid, "fcfid %%f4, %%f1");
+INSN(fcfid_, "fcfid. %%f4, %%f1");
+
+INSN(fctid, "fctid %%f4, %%f1");
+INSN(fctid_, "fctid. %%f4, %%f1");
+
+INSN(fctidz, "fctidz %%f4, %%f1");
+INSN(fctidz_, "fctidz. %%f4, %%f1");
+
+INSN(fctiw, "fctiw %%f4, %%f1");
+INSN(fctiw_, "fctiw. %%f4, %%f1");
+
+INSN(fctiwz, "fctiwz %%f4, %%f1");
+INSN(fctiwz_, "fctiwz. %%f4, %%f1");
+
+INSN(fdiv, "fdiv %%f4, %%f1,%%f2");
+INSN(fdiv_, "fdiv. %%f4, %%f1,%%f2");
+
+INSN(fdivs, "fdivs %%f4, %%f1,%%f2");
+INSN(fdivs_, "fdivs. %%f4, %%f1,%%f2");
+
+INSN(fmadd, "fmadd %%f4, %%f1,%%f2,%%f3");
+INSN(fmadd_, "fmadd. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fmadds, "fmadds %%f4, %%f1,%%f2,%%f3");
+INSN(fmadds_, "fmadds. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fmr, "fmr %%f4, %%f1");
+INSN(fmr_, "fmr. %%f4, %%f1");
+
+INSN(fmsub, "fmsub %%f4, %%f1,%%f2,%%f3");
+INSN(fmsub_, "fmsub. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fmsubs, "fmsubs %%f4, %%f1,%%f2,%%f3");
+INSN(fmsubs_, "fmsubs. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fmul, "fmul %%f4, %%f1,%%f2");
+INSN(fmul_, "fmul. %%f4, %%f1,%%f2");
+
+INSN(fmuls, "fmuls %%f4, %%f1,%%f2");
+INSN(fmuls_, "fmuls. %%f4, %%f1,%%f2");
+
+INSN(fneg, "fneg %%f4, %%f1");
+INSN(fneg_, "fneg. %%f4, %%f1");
+
+INSN(fnmadd, "fnmadd %%f4, %%f1,%%f2,%%f3");
+INSN(fnmadd_, "fnmadd. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fnmadds, "fnmadds %%f4, %%f1,%%f2,%%f3");
+INSN(fnmadds_, "fnmadds. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fnmsub, "fnmsub %%f4, %%f1,%%f2,%%f3");
+INSN(fnmsub_, "fnmsub. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fnmsubs, "fnmsubs %%f4, %%f1,%%f2,%%f3");
+INSN(fnmsubs_, "fnmsubs. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fre, "fre %%f4, %%f1");
+INSN(fre_, "fre. %%f4, %%f1");
+
+INSN(fres, "fres %%f4, %%f1");
+INSN(fres_, "fres. %%f4, %%f1");
+
+INSN(frsqrte, "frsqrte %%f4, %%f1");
+INSN(frsqrte_, "frsqrte. %%f4, %%f1");
+
+//INSN(frsqrtes, "frsqrtes %%f4, %%f1");
+//INSN(frsqrtes_, "frsqrtes. %%f4, %%f1");
+
+INSN(frsp, "frsp %%f4, %%f1");
+INSN(frsp_, "frsp. %%f4, %%f1");
+
+INSN(fsel, "fsel %%f4, %%f1,%%f2,%%f3");
+INSN(fsel_, "fsel. %%f4, %%f1,%%f2,%%f3");
+
+INSN(fsqrt, "fsqrt %%f4, %%f1");
+INSN(fsqrt_, "fsqrt. %%f4, %%f1");
+
+INSN(fsqrts, "fsqrts %%f4, %%f1");
+INSN(fsqrts_, "fsqrts. %%f4, %%f1");
+
+INSN(fsub, "fsub %%f4, %%f1,%%f2");
+INSN(fsub_, "fsub. %%f4, %%f1,%%f2");
+
+INSN(fsubs, "fsubs %%f4, %%f1,%%f2");
+INSN(fsubs_, "fsubs. %%f4, %%f1,%%f2");
+
+
+
+void do_1_unary ( char* name,
+ Result(*f)(double,double,double),
+ double a1,
+ ULong hideMask )
+{
+ Result r;
+ printf("%8s: %016llx (%e)\n", name, double_as_ULong(a1), a1);
+ set_NEAREST();
+ r = f(a1, 0.0,0.0);
+ printf(" near "); showResult(r,hideMask); printf("\n");
+ set_ZERO();
+ r = f(a1, 0.0,0.0);
+ printf(" zero "); showResult(r,hideMask); printf("\n");
+ set_PosINF();
+ r = f(a1, 0.0,0.0);
+ printf(" +inf "); showResult(r,hideMask); printf("\n");
+ set_NegINF();
+ r = f(a1, 0.0,0.0);
+ printf(" -inf "); showResult(r,hideMask); printf("\n");
+}
+
+void do_1_binary ( char* name,
+ Result(*f)(double,double,double),
+ double a1, double a2,
+ ULong hideMask )
+{
+ Result r;
+ printf("%8s: %016llx %016llx\n", name, double_as_ULong(a1),
+ double_as_ULong(a2));
+ set_NEAREST();
+ r = f(a1,a2, 0.0);
+ printf(" near "); showResult(r,hideMask); printf("\n");
+ set_ZERO();
+ r = f(a1,a2, 0.0);
+ printf(" zero "); showResult(r,hideMask); printf("\n");
+ set_PosINF();
+ r = f(a1,a2, 0.0);
+ printf(" +inf "); showResult(r,hideMask); printf("\n");
+ set_NegINF();
+ r = f(a1,a2, 0.0);
+ printf(" -inf "); showResult(r,hideMask); printf("\n");
+}
+
+void do_1_ternary ( char* name,
+ Result(*f)(double,double,double),
+ double a1, double a2, double a3,
+ ULong hideMask )
+{
+ Result r;
+ printf("%8s: %016llx %016llx %016llx\n",
+ name, double_as_ULong(a1),
+ double_as_ULong(a2), double_as_ULong(a3));
+ set_NEAREST();
+ r = f(a1,a2,a3);
+ printf(" near "); showResult(r,hideMask); printf("\n");
+ set_ZERO();
+ r = f(a1,a2,a3);
+ printf(" zero "); showResult(r,hideMask); printf("\n");
+ set_PosINF();
+ r = f(a1,a2,a3);
+ printf(" +inf "); showResult(r,hideMask); printf("\n");
+ set_NegINF();
+ r = f(a1,a2,a3);
+ printf(" -inf "); showResult(r,hideMask); printf("\n");
+}
+
+void do_N_unary ( char* name,
+ Result(*f)(double,double,double),
+ double* args,
+ int nargs,
+ ULong hideMask )
+{
+ int i;
+ for (i = 0; i < nargs; i++) {
+ do_1_unary( name, f, args[i], hideMask );
+ }
+}
+
+void do_N_binary ( char* name,
+ Result(*f)(double,double,double),
+ double* args,
+ int nargs,
+ ULong hideMask )
+{
+ int i, j;
+ for (i = 0; i < nargs; i++) {
+ for (j = 0; j < nargs; j++) {
+ do_1_binary( name, f, args[i], args[j], hideMask );
+ }
+ }
+}
+
+void do_N_ternary ( char* name,
+ Result(*f)(double,double,double),
+ double* args,
+ int nargs,
+ ULong hideMask )
+{
+ int i, j, k;
+ for (i = 0; i < nargs; i++) {
+ for (j = 0; j < nargs; j++) {
+ for (k = 0; k < nargs; k++) {
+ do_1_ternary( name, f, args[i], args[j], args[k], hideMask );
+ }
+ }
+ }
+}
+
+int main ( void )
+{
+ const ULong SHOW_ALL = 0;
+
+ int nargs = 21;
+ int nMacArgs = 11;
+
+ double* args = malloc(nargs * sizeof(double));
+ double* macArgs = malloc(nMacArgs * sizeof(double));
+
+ args[0] = 0.0;
+ args[1] = 1.0 / 0.0; // inf
+ args[2] = -args[1]; // -inf
+ args[3] = args[2]/args[2]; // nan
+ args[4] = -args[3]; // -nan
+ args[5] = -5e100;
+ args[6] = -5e20;
+ args[7] = -501.0;
+ args[8] = -6.0;
+ args[9] = -1.0;
+ args[10] = -2e-20;
+ args[11] = -2e-200;
+ args[12] = 2e-200;
+ args[13] = 2e-20;
+ args[14] = 1.0;
+ args[15] = 6.0;
+ args[16] = 501.0;
+ args[17] = 5e20;
+ args[18] = 5e100;
+ args[19] = 1.23e+5;
+ args[20] = 1.23e+14;
+
+#if 0
+ macArgs[0] = 0.0;
+ macArgs[1] = -5e100;
+ macArgs[2] = -5e20;
+ macArgs[3] = -501.0;
+ macArgs[4] = -6.0;
+ macArgs[5] = -1.0;
+ macArgs[6] = -2e-20;
+ macArgs[7] = -2e-200;
+ macArgs[8] = 2e-200;
+ macArgs[9] = 2e-20;
+ macArgs[10] = 1.0;
+ macArgs[11] = 6.0;
+ macArgs[12] = 501.0;
+ macArgs[13] = 5e20;
+ macArgs[14] = 5e100;
+ macArgs[15] = 1.23e+5;
+ macArgs[16] = 1.23e+14;
+
+ //macArgs[17] = args[3]; // nan
+ //macArgs[18] = -args[3]; // -nan
+#endif
+
+ macArgs[0] = 0.0;
+ macArgs[1] = 1.0;
+ macArgs[2] = 1.0 + (1.0/7.0);
+ macArgs[3] = 6.01;
+ macArgs[4] = 501.0;
+ macArgs[5] = 31415927.0;
+ macArgs[6] = - 1.0;
+ macArgs[7] = - (1.0 + (1.0/7.0));
+ macArgs[8] = - 6.01;
+ macArgs[9] = - 501.0;
+ macArgs[10] = - 31415927.0;
+
+
+ do_N_unary("fmr", insn_fmr, args, nargs, SHOW_ALL);
+ do_N_unary("fmr_", insn_fmr_, args, nargs, SHOW_ALL);
+
+ do_N_unary("fneg", insn_fneg, args, nargs, SHOW_ALL);
+ do_N_unary("fneg_", insn_fneg_, args, nargs, SHOW_ALL);
+
+ do_N_unary("fabs", insn_fabs, args, nargs, SHOW_ALL);
+ do_N_unary("fabs_", insn_fabs_, args, nargs, SHOW_ALL);
+
+ do_N_unary("fnabs", insn_fnabs, args, nargs, SHOW_ALL);
+ do_N_unary("fnabs_", insn_fnabs_, args, nargs, SHOW_ALL);
+
+
+ do_N_binary("fadd", insn_fadd, args, nargs, SHOW_ALL);
+ do_N_binary("fadd_", insn_fadd_, args, nargs, SHOW_ALL);
+
+ do_N_binary("fadds", insn_fadds, args, nargs, SHOW_ALL);
+ do_N_binary("fadds_", insn_fadds_, args, nargs, SHOW_ALL);
+
+ do_N_binary("fdiv", insn_fdiv, args, nargs, SHOW_ALL);
+ do_N_binary("fdiv_", insn_fdiv_, args, nargs, SHOW_ALL);
+
+ do_N_binary("fdivs", insn_fdivs, args, nargs, SHOW_ALL);
+ do_N_binary("fdivs_", insn_fdivs_, args, nargs, SHOW_ALL);
+
+ do_N_binary("fmul", insn_fmul, args, nargs, SHOW_ALL);
+ do_N_binary("fmul_", insn_fmul_, args, nargs, SHOW_ALL);
+
+ do_N_binary("fmuls", insn_fmuls, args, nargs, SHOW_ALL);
+ do_N_binary("fmuls_", insn_fmuls_, args, nargs, SHOW_ALL);
+
+ do_N_binary("fsub", insn_fsub, args, nargs, SHOW_ALL);
+ do_N_binary("fsub_", insn_fsub_, args, nargs, SHOW_ALL);
+
+ do_N_binary("fsubs", insn_fsubs, args, nargs, SHOW_ALL);
+ do_N_binary("fsubs_", insn_fsubs_, args, nargs, SHOW_ALL);
+
+ //do_N_unary(fcfid, SHOW_ALL);
+ //do_N_unary(fcfid_, SHOW_ALL);
+
+ //do_N_unary(fctid, SHOW_ALL);
+ //do_N_unary(fctid_, SHOW_ALL);
+
+ //do_N_unary(fctidz, SHOW_ALL);
+ //do_N_unary(fctidz_, SHOW_ALL);
+
+ do_N_unary("fctiw", insn_fctiw, args, nargs, 0xFFFFFFFF00000000ULL);
+ do_N_unary("fctiw_", insn_fctiw_, args, nargs, 0xFFFFFFFF00000000ULL);
+
+ do_N_unary("fctiwz", insn_fctiwz, args, nargs, 0xFFFFFFFF00000000ULL);
+ do_N_unary("fctiwz_", insn_fctiwz_, args, nargs, 0xFFFFFFFF00000000ULL);
+
+ do_N_ternary("fmadd", insn_fmadd, macArgs, nMacArgs, SHOW_ALL);
+ do_N_ternary("fmadd_", insn_fmadd_, macArgs, nMacArgs, SHOW_ALL);
+
+ do_N_ternary("fmadds", insn_fmadds, macArgs, nMacArgs, SHOW_ALL);
+ do_N_ternary("fmadds_", insn_fmadds_, macArgs, nMacArgs, SHOW_ALL);
+
+ do_N_ternary("fmsub", insn_fmsub, macArgs, nMacArgs, SHOW_ALL);
+ do_N_ternary("fmsub_", insn_fmsub_, macArgs, nMacArgs, SHOW_ALL);
+
+ do_N_ternary("fmsubs", insn_fmsubs, macArgs, nMacArgs, SHOW_ALL);
+ do_N_ternary("fmsubs_", insn_fmsubs_, macArgs, nMacArgs, SHOW_ALL);
+
+ do_N_ternary("fnmadd", insn_fnmadd, macArgs, nMacArgs, SHOW_ALL);
+ do_N_ternary("fnmadd_", insn_fnmadd_, macArgs, nMacArgs, SHOW_ALL);
+
+ do_N_ternary("fnmadds", insn_fnmadds, macArgs, nMacArgs, SHOW_ALL);
+ do_N_ternary("fnmadds_", insn_fnmadds_, macArgs, nMacArgs, SHOW_ALL);
+
+ do_N_ternary("fnmsub", insn_fnmsub, macArgs, nMacArgs, SHOW_ALL);
+ do_N_ternary("fnmsub_", insn_fnmsub_, macArgs, nMacArgs, SHOW_ALL);
+
+ do_N_ternary("fnmsubs", insn_fnmsubs, macArgs, nMacArgs, SHOW_ALL);
+ do_N_ternary("fnmsubs_", insn_fnmsubs_, macArgs, nMacArgs, SHOW_ALL);
+
+ //do_N_unary(fre, SHOW_ALL);
+ //do_N_unary(fre_, SHOW_ALL);
+
+ do_N_unary("fres", insn_fres, args, nargs, 0x000001FFFFFFFFFFULL);
+ do_N_unary("fres_", insn_fres_, args, nargs, 0x000001FFFFFFFFFFULL);
+
+ do_N_unary("frsqrte", insn_frsqrte, args, nargs, SHOW_ALL);
+ do_N_unary("frsqrte_", insn_frsqrte_, args, nargs, SHOW_ALL);
+
+ // do_N_unary("frsqrtes", insn_frsqrtes, args, nargs, SHOW_ALL);
+ // do_N_unary("frsqrtes_", insn_frsqrtes_, args, nargs, SHOW_ALL);
+
+ do_N_unary("frsp", insn_frsp, args, nargs, SHOW_ALL);
+ do_N_unary("frsp_", insn_frsp_, args, nargs, SHOW_ALL);
+
+ do_N_ternary("fsel", insn_fsel, args, nargs, SHOW_ALL);
+ do_N_ternary("fsel_", insn_fsel_, args, nargs, SHOW_ALL);
+
+ //do_N_unary(fsqrt, SHOW_ALL);
+ //do_N_unary(fsqrt_, SHOW_ALL);
+
+ //do_N_unary(fsqrts, SHOW_ALL);
+ //do_N_unary(fsqrts_, SHOW_ALL);
+
+ return 0;
+}
projects / l4.git / blobdiff