Mercurial > dropbear
view tomsfastmath/src/sqr/fp_sqr_comba.c @ 647:939cd3e22c87 dropbear-tfm
- Fix constraints so we don't get warned about uninitialised
variable (it isn't used as input by the asm)
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Wed, 30 Nov 2011 23:15:21 +0800 |
| parents | f10335e5e42f |
| children |
line wrap: on
line source
/* * * This project is meant to fill in where LibTomMath * falls short. That is speed ;-) * * This project is public domain and free for all purposes. * * Tom St Denis, [email protected] */ #include <tfm.h> #if defined(TFM_PRESCOTT) && defined(TFM_SSE2) #undef TFM_SSE2 #define TFM_X86 #endif #if defined(TFM_X86) /* x86-32 optimized */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI #define SQRADD(i, j) \ do { fp_digit ti = (i); \ asm( \ "movl %6,%%eax \n\t" \ "mull %%eax \n\t" \ "addl %%eax,%0 \n\t" \ "adcl %%edx,%1 \n\t" \ "adcl $0,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "m"(ti) :"%eax","%edx","%cc"); } while (0); #define SQRADD2(i, j) \ do { fp_digit ti = (i); \ fp_digit tj = (j); \ asm( \ "movl %6,%%eax \n\t" \ "mull %7 \n\t" \ "addl %%eax,%0 \n\t" \ "adcl %%edx,%1 \n\t" \ "adcl $0,%2 \n\t" \ "addl %%eax,%0 \n\t" \ "adcl %%edx,%1 \n\t" \ "adcl $0,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "m"(ti), "m"(tj) :"%eax","%edx","%cc"); } while (0); #define SQRADDSC(i, j) \ do { \ asm( \ "movl %2,%%eax \n\t" \ "mull %3 \n\t" \ "movl %%eax,%0 \n\t" \ "movl %%edx,%1 \n\t" \ :"=r"(sc0), "=r"(sc1): "g"(i), "g"(j) :"%eax","%edx","%cc"); \ sc2 = 0; } while (0); #define SQRADDAC(i, j) \ do { fp_digit ti = (i); \ fp_digit tj = (j); \ asm( \ "movl %6,%%eax \n\t" \ "mull %7 \n\t" \ "addl %%eax,%0 \n\t" \ "adcl %%edx,%1 \n\t" \ "adcl $0,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "m"(ti), "m"(tj) :"%eax","%edx","%cc"); \ } while (0); #define SQRADDDB \ do { fp_digit tsc0 = (sc0); \ fp_digit tsc1 = (sc1); \ fp_digit tsc2 = (sc2); \ asm( \ "addl %6,%0 \n\t" \ "adcl %7,%1 \n\t" \ "adcl %8,%2 \n\t" \ "addl %6,%0 \n\t" \ "adcl %7,%1 \n\t" \ "adcl %8,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "m"(tsc0), "m"(tsc1), "m"(tsc2) : "%cc"); } while (0); #elif defined(TFM_X86_64) /* x86-64 optimized */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI #define SQRADD(i, j) \ asm( \ "movq %6,%%rax \n\t" \ "mulq %%rax \n\t" \ "addq %%rax,%0 \n\t" \ "adcq %%rdx,%1 \n\t" \ "adcq $0,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i) :"%rax","%rdx","%cc"); #define SQRADD2(i, j) \ asm( \ "movq %6,%%rax \n\t" \ "mulq %7 \n\t" \ "addq %%rax,%0 \n\t" \ "adcq %%rdx,%1 \n\t" \ "adcq $0,%2 \n\t" \ "addq %%rax,%0 \n\t" \ "adcq %%rdx,%1 \n\t" \ "adcq $0,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i), "g"(j) :"%rax","%rdx","%cc"); #define SQRADDSC(i, j) \ asm( \ "movq %3,%%rax \n\t" \ "mulq %4 \n\t" \ "movq %%rax,%0 \n\t" \ "movq %%rdx,%1 \n\t" \ "xorq %2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "g"(i), "g"(j) :"%rax","%rdx","%cc"); #define SQRADDAC(i, j) \ asm( \ "movq %6,%%rax \n\t" \ "mulq %7 \n\t" \ "addq %%rax,%0 \n\t" \ "adcq %%rdx,%1 \n\t" \ "adcq $0,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "g"(i), "g"(j) :"%rax","%rdx","%cc"); #define SQRADDDB \ asm( \ "addq %6,%0 \n\t" \ "adcq %7,%1 \n\t" \ "adcq %8,%2 \n\t" \ "addq %6,%0 \n\t" \ "adcq %7,%1 \n\t" \ "adcq %8,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(sc0), "r"(sc1), "r"(sc2) : "%cc"); #elif defined(TFM_SSE2) /* SSE2 Optimized */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI \ asm("emms"); #define SQRADD(i, j) \ asm( \ "movd %6,%%mm0 \n\t" \ "pmuludq %%mm0,%%mm0\n\t" \ "movd %%mm0,%%eax \n\t" \ "psrlq $32,%%mm0 \n\t" \ "addl %%eax,%0 \n\t" \ "movd %%mm0,%%eax \n\t" \ "adcl %%eax,%1 \n\t" \ "adcl $0,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "m"(i) :"%eax","%cc"); #define SQRADD2(i, j) \ asm( \ "movd %6,%%mm0 \n\t" \ "movd %7,%%mm1 \n\t" \ "pmuludq %%mm1,%%mm0\n\t" \ "movd %%mm0,%%eax \n\t" \ "psrlq $32,%%mm0 \n\t" \ "movd %%mm0,%%edx \n\t" \ "addl %%eax,%0 \n\t" \ "adcl %%edx,%1 \n\t" \ "adcl $0,%2 \n\t" \ "addl %%eax,%0 \n\t" \ "adcl %%edx,%1 \n\t" \ "adcl $0,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "m"(i), "m"(j) :"%eax","%edx","%cc"); #define SQRADDSC(i, j) \ asm( \ "movd %6,%%mm0 \n\t" \ "movd %7,%%mm1 \n\t" \ "pmuludq %%mm1,%%mm0\n\t" \ "movd %%mm0,%0 \n\t" \ "psrlq $32,%%mm0 \n\t" \ "movd %%mm0,%1 \n\t" \ "xorl %2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "m"(i), "m"(j)); #define SQRADDAC(i, j) \ asm( \ "movd %6,%%mm0 \n\t" \ "movd %7,%%mm1 \n\t" \ "pmuludq %%mm1,%%mm0\n\t" \ "movd %%mm0,%%eax \n\t" \ "psrlq $32,%%mm0 \n\t" \ "movd %%mm0,%%edx \n\t" \ "addl %%eax,%0 \n\t" \ "adcl %%edx,%1 \n\t" \ "adcl $0,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "m"(i), "m"(j) :"%eax","%edx","%cc"); #define SQRADDDB \ asm( \ "addl %6,%0 \n\t" \ "adcl %7,%1 \n\t" \ "adcl %8,%2 \n\t" \ "addl %6,%0 \n\t" \ "adcl %7,%1 \n\t" \ "adcl %8,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(sc0), "r"(sc1), "r"(sc2) : "%cc"); #elif defined(TFM_ARM) /* ARM code */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI /* multiplies point i and j, updates carry "c1" and digit c2 */ #define SQRADD(i, j) \ asm( \ " UMULL r0,r1,%6,%6 \n\t" \ " ADDS %0,%0,r0 \n\t" \ " ADCS %1,%1,r1 \n\t" \ " ADC %2,%2,#0 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(i) : "r0", "r1", "%cc"); /* for squaring some of the terms are doubled... */ #define SQRADD2(i, j) \ asm( \ " UMULL r0,r1,%6,%7 \n\t" \ " ADDS %0,%0,r0 \n\t" \ " ADCS %1,%1,r1 \n\t" \ " ADC %2,%2,#0 \n\t" \ " ADDS %0,%0,r0 \n\t" \ " ADCS %1,%1,r1 \n\t" \ " ADC %2,%2,#0 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(i), "r"(j) : "r0", "r1", "%cc"); #define SQRADDSC(i, j) \ asm( \ " UMULL %0,%1,%6,%7 \n\t" \ " SUB %2,%2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2) : "0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j) : "%cc"); #define SQRADDAC(i, j) \ asm( \ " UMULL r0,r1,%6,%7 \n\t" \ " ADDS %0,%0,r0 \n\t" \ " ADCS %1,%1,r1 \n\t" \ " ADC %2,%2,#0 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2) : "0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j) : "r0", "r1", "%cc"); #define SQRADDDB \ asm( \ " ADDS %0,%0,%3 \n\t" \ " ADCS %1,%1,%4 \n\t" \ " ADC %2,%2,%5 \n\t" \ " ADDS %0,%0,%3 \n\t" \ " ADCS %1,%1,%4 \n\t" \ " ADC %2,%2,%5 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "r"(sc0), "r"(sc1), "r"(sc2), "0"(c0), "1"(c1), "2"(c2) : "%cc"); #elif defined(TFM_PPC32) /* PPC32 */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI /* multiplies point i and j, updates carry "c1" and digit c2 */ #define SQRADD(i, j) \ asm( \ " mullw 16,%6,%6 \n\t" \ " addc %0,%0,16 \n\t" \ " mulhwu 16,%6,%6 \n\t" \ " adde %1,%1,16 \n\t" \ " addze %2,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i):"16","%cc"); /* for squaring some of the terms are doubled... */ #define SQRADD2(i, j) \ asm( \ " mullw 16,%6,%7 \n\t" \ " mulhwu 17,%6,%7 \n\t" \ " addc %0,%0,16 \n\t" \ " adde %1,%1,17 \n\t" \ " addze %2,%2 \n\t" \ " addc %0,%0,16 \n\t" \ " adde %1,%1,17 \n\t" \ " addze %2,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i), "r"(j):"16", "17","%cc"); #define SQRADDSC(i, j) \ asm( \ " mullw %0,%6,%7 \n\t" \ " mulhwu %1,%6,%7 \n\t" \ " xor %2,%2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i),"r"(j) : "%cc"); #define SQRADDAC(i, j) \ asm( \ " mullw 16,%6,%7 \n\t" \ " addc %0,%0,16 \n\t" \ " mulhwu 16,%6,%7 \n\t" \ " adde %1,%1,16 \n\t" \ " addze %2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j):"16", "%cc"); #define SQRADDDB \ asm( \ " addc %0,%0,%3 \n\t" \ " adde %1,%1,%4 \n\t" \ " adde %2,%2,%5 \n\t" \ " addc %0,%0,%3 \n\t" \ " adde %1,%1,%4 \n\t" \ " adde %2,%2,%5 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "r"(sc0), "r"(sc1), "r"(sc2), "0"(c0), "1"(c1), "2"(c2) : "%cc"); #elif defined(TFM_PPC64) /* PPC64 */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI /* multiplies point i and j, updates carry "c1" and digit c2 */ #define SQRADD(i, j) \ asm( \ " mulld r16,%6,%6 \n\t" \ " addc %0,%0,r16 \n\t" \ " mulhdu r16,%6,%6 \n\t" \ " adde %1,%1,r16 \n\t" \ " addze %2,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i):"r16","%cc"); /* for squaring some of the terms are doubled... */ #define SQRADD2(i, j) \ asm( \ " mulld r16,%6,%7 \n\t" \ " mulhdu r17,%6,%7 \n\t" \ " addc %0,%0,r16 \n\t" \ " adde %1,%1,r17 \n\t" \ " addze %2,%2 \n\t" \ " addc %0,%0,r16 \n\t" \ " adde %1,%1,r17 \n\t" \ " addze %2,%2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i), "r"(j):"r16", "r17","%cc"); #define SQRADDSC(i, j) \ asm( \ " mulld %0,%6,%7 \n\t" \ " mulhdu %1,%6,%7 \n\t" \ " xor %2,%2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i),"r"(j) : "%cc"); #define SQRADDAC(i, j) \ asm( \ " mulld r16,%6,%7 \n\t" \ " addc %0,%0,r16 \n\t" \ " mulhdu r16,%6,%7 \n\t" \ " adde %1,%1,r16 \n\t" \ " addze %2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j):"r16", "%cc"); #define SQRADDDB \ asm( \ " addc %0,%0,%3 \n\t" \ " adde %1,%1,%4 \n\t" \ " adde %2,%2,%5 \n\t" \ " addc %0,%0,%3 \n\t" \ " adde %1,%1,%4 \n\t" \ " adde %2,%2,%5 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "r"(sc0), "r"(sc1), "r"(sc2), "0"(c0), "1"(c1), "2"(c2) : "%cc"); #elif defined(TFM_AVR32) /* AVR32 */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI /* multiplies point i and j, updates carry "c1" and digit c2 */ #define SQRADD(i, j) \ asm( \ " mulu.d r2,%6,%6 \n\t" \ " add %0,%0,r2 \n\t" \ " adc %1,%1,r3 \n\t" \ " acr %2 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i):"r2","r3"); /* for squaring some of the terms are doubled... */ #define SQRADD2(i, j) \ asm( \ " mulu.d r2,%6,%7 \n\t" \ " add %0,%0,r2 \n\t" \ " adc %1,%1,r3 \n\t" \ " acr %2, \n\t" \ " add %0,%0,r2 \n\t" \ " adc %1,%1,r3 \n\t" \ " acr %2, \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i), "r"(j):"r2", "r3"); #define SQRADDSC(i, j) \ asm( \ " mulu.d r2,%6,%7 \n\t" \ " mov %0,r2 \n\t" \ " mov %1,r3 \n\t" \ " eor %2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i),"r"(j) : "r2", "r3"); #define SQRADDAC(i, j) \ asm( \ " mulu.d r2,%6,%7 \n\t" \ " add %0,%0,r2 \n\t" \ " adc %1,%1,r3 \n\t" \ " acr %2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j):"r2", "r3"); #define SQRADDDB \ asm( \ " add %0,%0,%3 \n\t" \ " adc %1,%1,%4 \n\t" \ " adc %2,%2,%5 \n\t" \ " add %0,%0,%3 \n\t" \ " adc %1,%1,%4 \n\t" \ " adc %2,%2,%5 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "r"(sc0), "r"(sc1), "r"(sc2), "0"(c0), "1"(c1), "2"(c2) : "%cc"); #elif defined(TFM_MIPS) /* MIPS */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI /* multiplies point i and j, updates carry "c1" and digit c2 */ #define SQRADD(i, j) \ asm( \ " multu %6,%6 \n\t" \ " mflo $12 \n\t" \ " mfhi $13 \n\t" \ " addu %0,%0,$12 \n\t" \ " sltu $12,%0,$12 \n\t" \ " addu %1,%1,$13 \n\t" \ " sltu $13,%1,$13 \n\t" \ " addu %1,%1,$12 \n\t" \ " sltu $12,%1,$12 \n\t" \ " addu %2,%2,$13 \n\t" \ " addu %2,%2,$12 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i):"$12","$13"); /* for squaring some of the terms are doubled... */ #define SQRADD2(i, j) \ asm( \ " multu %6,%7 \n\t" \ " mflo $12 \n\t" \ " mfhi $13 \n\t" \ \ " addu %0,%0,$12 \n\t" \ " sltu $14,%0,$12 \n\t" \ " addu %1,%1,$13 \n\t" \ " sltu $15,%1,$13 \n\t" \ " addu %1,%1,$14 \n\t" \ " sltu $14,%1,$14 \n\t" \ " addu %2,%2,$15 \n\t" \ " addu %2,%2,$14 \n\t" \ \ " addu %0,%0,$12 \n\t" \ " sltu $14,%0,$12 \n\t" \ " addu %1,%1,$13 \n\t" \ " sltu $15,%1,$13 \n\t" \ " addu %1,%1,$14 \n\t" \ " sltu $14,%1,$14 \n\t" \ " addu %2,%2,$15 \n\t" \ " addu %2,%2,$14 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i), "r"(j):"$12", "$13", "$14", "$15"); #define SQRADDSC(i, j) \ asm( \ " multu %6,%7 \n\t" \ " mflo %0 \n\t" \ " mfhi %1 \n\t" \ " xor %2,%2,%2 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i),"r"(j) : "%cc"); #define SQRADDAC(i, j) \ asm( \ " multu %6,%7 \n\t" \ " mflo $12 \n\t" \ " mfhi $13 \n\t" \ " addu %0,%0,$12 \n\t" \ " sltu $12,%0,$12 \n\t" \ " addu %1,%1,$13 \n\t" \ " sltu $13,%1,$13 \n\t" \ " addu %1,%1,$12 \n\t" \ " sltu $12,%1,$12 \n\t" \ " addu %2,%2,$13 \n\t" \ " addu %2,%2,$12 \n\t" \ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j):"$12", "$13", "$14"); #define SQRADDDB \ asm( \ " addu %0,%0,%3 \n\t" \ " sltu $10,%0,%3 \n\t" \ " addu %1,%1,$10 \n\t" \ " sltu $10,%1,$10 \n\t" \ " addu %1,%1,%4 \n\t" \ " sltu $11,%1,%4 \n\t" \ " addu %2,%2,$10 \n\t" \ " addu %2,%2,$11 \n\t" \ " addu %2,%2,%5 \n\t" \ \ " addu %0,%0,%3 \n\t" \ " sltu $10,%0,%3 \n\t" \ " addu %1,%1,$10 \n\t" \ " sltu $10,%1,$10 \n\t" \ " addu %1,%1,%4 \n\t" \ " sltu $11,%1,%4 \n\t" \ " addu %2,%2,$10 \n\t" \ " addu %2,%2,$11 \n\t" \ " addu %2,%2,%5 \n\t" \ :"=r"(c0), "=r"(c1), "=r"(c2) : "r"(sc0), "r"(sc1), "r"(sc2), "0"(c0), "1"(c1), "2"(c2) : "$10", "$11"); #else #define TFM_ISO /* ISO C portable code */ #define COMBA_START #define CLEAR_CARRY \ c0 = c1 = c2 = 0; #define COMBA_STORE(x) \ x = c0; #define COMBA_STORE2(x) \ x = c1; #define CARRY_FORWARD \ do { c0 = c1; c1 = c2; c2 = 0; } while (0); #define COMBA_FINI /* multiplies point i and j, updates carry "c1" and digit c2 */ #define SQRADD(i, j) \ do { fp_word t; \ t = c0 + ((fp_word)i) * ((fp_word)j); c0 = t; \ t = c1 + (t >> DIGIT_BIT); c1 = t; c2 += t >> DIGIT_BIT; \ } while (0); /* for squaring some of the terms are doubled... */ #define SQRADD2(i, j) \ do { fp_word t; \ t = ((fp_word)i) * ((fp_word)j); \ tt = (fp_word)c0 + t; c0 = tt; \ tt = (fp_word)c1 + (tt >> DIGIT_BIT); c1 = tt; c2 += tt >> DIGIT_BIT; \ tt = (fp_word)c0 + t; c0 = tt; \ tt = (fp_word)c1 + (tt >> DIGIT_BIT); c1 = tt; c2 += tt >> DIGIT_BIT; \ } while (0); #define SQRADDSC(i, j) \ do { fp_word t; \ t = ((fp_word)i) * ((fp_word)j); \ sc0 = (fp_digit)t; sc1 = (t >> DIGIT_BIT); sc2 = 0; \ } while (0); #define SQRADDAC(i, j) \ do { fp_word t; \ t = sc0 + ((fp_word)i) * ((fp_word)j); sc0 = t; \ t = sc1 + (t >> DIGIT_BIT); sc1 = t; sc2 += t >> DIGIT_BIT; \ } while (0); #define SQRADDDB \ do { fp_word t; \ t = ((fp_word)sc0) + ((fp_word)sc0) + c0; c0 = t; \ t = ((fp_word)sc1) + ((fp_word)sc1) + c1 + (t >> DIGIT_BIT); c1 = t; \ c2 = c2 + ((fp_word)sc2) + ((fp_word)sc2) + (t >> DIGIT_BIT); \ } while (0); #endif /* $Source$ */ /* $Revision$ */ /* $Date$ */