gcc386.mcs

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; MCS file for Gnu GCC 80386-Pentium compiler
;
; The optimizer may not like the generated code - if so switch it off
;
; Sorry about all the %'s! Each % must be input here as %%
; Triple register is cl|edi|ebp
; MUL_START. Initialise registers. Make ebx and esi point to multipliers a 
; and b. edi points at result c. Note edi is shared.
; Initialise Triple register to 0
; See makemcs.txt for more information about this file
; 
MACRO MUL_START
  ASM (
  "pushl %%%%ebp\n"
  "pushl %%%%edi\n"
  "pushl %%%%esi\n"
  "movl %%0,%%%%ebx\n"
  "movl %%1,%%%%esi\n"
  "movl %%2,%%%%edi\n"
  "pushl %%%%edi\n"
  "xorl %%%%ecx,%%%%ecx\n"
  "xorl %%%%edi,%%%%edi\n"
  "xorl %%%%ebp,%%%%ebp\n"
ENDM
;
; STEP macro. Calculates a double-register partial product
; and adds it to the triple register total
; Parameters 1 & 2: Indices i and j for partial product multipliers a[i] 
; and b[j]
MACRO STEP
  "movl 4*%d(%%%%ebx),%%%%eax\n"
  "mull 4*%d(%%%%esi)\n"
  "addl %%%%eax,%%%%ebp\n"
  "adcl %%%%edx,%%%%edi\n"
  "adc %%%%ch,%%%%cl\n"
ENDM
;
; LAST
;
MACRO LAST
  "movl 4*%d(%%%%ebx),%%%%eax\n"
  "mull 4*%d(%%%%esi)\n"
  "addl %%%%eax,%%%%ebp\n"
ENDM
;
; MFIN macro. Finish column calculation. Store Sum for this column
; and get Carry for next
; Parameter 1: Index k for Column Sum c[k]
MACRO MFIN
  "movl %%%%edi,%%%%edx\n"
  "popl %%%%edi\n"
  "movl %%%%ebp,4*%d(%%%%edi)\n"
  "pushl %%%%edi\n"
  "movl %%%%edx,%%%%ebp\n"
  "movl %%%%ecx,%%%%edi\n"
  "xor %%%%cl,%%%%cl\n"
ENDM
;
; MUL_END
; Parameter 1: Index for final carry c[.]
MACRO MUL_END 
  "popl %%%%edi\n"
  "movl %%%%ebp,4*%d(%%%%edi)\n"
  "popl %%%%esi\n"
  "popl %%%%edi\n"
  "popl %%%%ebp\n"
   :
   :"m"(a),"m"(b),"m"(c)
   :"eax","edi","esi","ebx","ecx","edx","ebp","memory"
  );
ENDM
;
; SQR_START
; 
MACRO SQR_START
  ASM (
  "pushl %%%%ebp\n"
  "pushl %%%%edi\n"
  "pushl %%%%esi\n"
  "movl %%0,%%%%ebx\n"
  "movl %%1,%%%%esi\n"
  "xorl %%%%ecx,%%%%ecx\n"
  "xorl %%%%edi,%%%%edi\n"
  "xorl %%%%ebp,%%%%ebp\n"
ENDM
;
; DSTEP macro. Calculates a double-register partial product
; and add it twice to a triple register total
; Parameters 1 & 2 : Indices of partial product multipliers
MACRO DSTEP
  "movl 4*%d(%%%%ebx),%%%%eax\n"
  "mull 4*%d(%%%%ebx)\n"
  "addl %%%%eax,%%%%ebp\n"
  "adcl %%%%edx,%%%%edi\n"
  "adc  %%%%ch,%%%%cl\n"
  "addl %%%%eax,%%%%ebp\n"
  "adcl %%%%edx,%%%%edi\n"
  "adc  %%%%ch,%%%%cl\n"
ENDM
;
; SELF macro. Calculate the double-register square and
; add it to a triple register total
; Parameter 1 : Index of diagonal element
MACRO SELF
  "movl 4*%d(%%%%ebx),%%%%eax\n"
  "mull %%%%eax\n"
  "addl %%%%eax,%%%%ebp\n"
  "adcl %%%%edx,%%%%edi\n"
  "adc  %%%%ch,%%%%cl\n"
ENDM
;
; SFIN macro. Finish column calculation for squaring. Store Sum
; and get Carry for next column.
; Parameter 1: Index of Column Sum
MACRO SFIN
  "movl %%%%ebp,4*%d(%%%%esi)\n"
  "movl %%%%edi,%%%%ebp\n"
  "movl %%%%ecx,%%%%edi\n"
  "xor  %%%%cl,%%%%cl\n"
ENDM
;
; SQR_END
; Parameter 1: Index for final carry
MACRO SQR_END
  "movl %%%%ebp,4*%d(%%%%esi)\n"
  "popl %%%%esi\n"
  "popl %%%%edi\n"
  "popl %%%%ebp\n"
   :
   :"m"(a),"m"(c)
   :"eax","edi","esi","ebx","ecx","edx","ebp","memory"
  );
ENDM
;
; REDC_START
;
MACRO REDC_START
  ASM (
  "pushl %%%%ebp\n"
  "pushl %%%%edi\n"
  "pushl %%%%esi\n"
  "movl %%0,%%%%ebx\n"
  "movl %%1,%%%%esi\n"
  "movl %%2,%%%%edx\n"
  "pushl %%%%edx\n"
  "xorl %%%%edi,%%%%edi\n"
  "xorl %%%%ecx,%%%%ecx\n"
  "movl (%%%%ebx),%%%%ebp\n"
ENDM
;
; RFINU macro
;
MACRO RFINU
  "movl %%%%ebp,%%%%eax\n"
  "popl %%%%edx\n"
  "pushl %%%%edx\n"
  "mull %%%%edx\n"
  "movl %%%%eax,4*%d(%%%%ebx)\n"
  "mull (%%%%esi)\n"
  "addl %%%%eax,%%%%ebp\n"
  "adcl %%%%edx,%%%%edi\n"
  "adc  %%%%ch,%%%%cl\n"
  "movl %%%%edi,%%%%ebp\n"
  "movl %%%%ecx,%%%%edi\n"
  "xorl %%%%ecx,%%%%ecx\n"
  "addl 4*(%d+1)(%%%%ebx),%%%%ebp\n"
  "adcl %%%%ecx,%%%%edi\n"
ENDM
;
; RFIND macro
;
MACRO RFIND
  "movl %%%%ebp,4*%d(%%%%ebx)\n"
  "movl %%%%edi,%%%%ebp\n"
  "movl %%%%ecx,%%%%edi\n"
  "xorl %%%%ecx,%%%%ecx\n"
  "addl 4*(%d+1)(%%%%ebx),%%%%ebp\n"
  "adcl %%%%ecx,%%%%edi\n"
ENDM
;
; REDC_END
;
MACRO REDC_END
  "movl %%%%ebp,4*%d(%%%%ebx)\n"
  "movl %%%%edi,4*(%d+1)(%%%%ebx)\n"
  "popl %%%%edx\n"
  "popl %%%%esi\n"
  "popl %%%%edi\n"
  "popl %%%%ebp\n"
   :
   :"m"(a),"m"(b),"m"(ndash)
   :"eax","edi","esi","ebx","ecx","edx","ebp","memory"
  );
ENDM
;
; ADD_START macro - initialise for add. Do first one
;
MACRO ADD_START
  ASM (
  "pushl %%%%esi\n"
  "pushl %%%%edi\n"
  "movl %%0,%%%%esi\n"
  "movl %%1,%%%%ebx\n"
  "movl %%3,%%%%edi\n"
  "movl (%%%%esi),%%%%eax\n"
  "addl (%%%%ebx),%%%%eax\n"
  "movl %%%%eax,(%%%%edi)\n"
ENDM
;
; ADD macro. Add two numbers from memory and store result in memory.
; Don't forget carry bit
;
MACRO ADD
  "movl 4*%d(%%%%esi),%%%%eax\n"
  "adcl 4*%d(%%%%ebx),%%%%eax\n"
  "movl %%%%eax,4*%d(%%%%edi)\n"
ENDM
;
; ADD_END macro. Catch Carry
;
MACRO ADD_END
  "movl $0,%%%%eax\n"
  "adcl %%%%eax,%%%%eax\n"
  "movl %%%%eax,%%2\n"
  "popl %%%%edi\n"
  "popl %%%%esi\n"
   :
   :"m"(a),"m"(b),"m"(carry),"m"(c)
   :"eax","edi","esi","ebx","memory"
  );
ENDM
;
; INC_START macro
;
MACRO INC_START
  ASM (
  "pushl %%%%edi\n"
  "movl %%0,%%%%edi\n"
  "movl %%1,%%%%ebx\n"
  "movl (%%%%ebx),%%%%eax\n"
  "addl %%%%eax,(%%%%edi)\n"
ENDM
;
; INC macro. Increment number in memory. Don't forget carry
;
MACRO INC
  "movl 4*%d(%%%%ebx),%%%%eax\n"
  "adcl %%%%eax,4*%d(%%%%edi)\n"
ENDM
;
; INC_END macro. Catch Carry
;
MACRO INC_END
  "movl $0,%%%%eax\n"
  "adcl %%%%eax,%%%%eax\n"
  "movl %%%%eax,%%2\n"
  "popl %%%%edi\n"
   :
   :"m"(a),"m"(b),"m"(carry)
   :"eax","edi","ebx","memory"
  );
ENDM
;
; SUB_START macro. Do first one.
;
MACRO SUB_START
  ASM (
  "pushl %%%%esi\n"
  "pushl %%%%edi\n"
  "movl %%0,%%%%esi\n"
  "movl %%1,%%%%ebx\n"
  "movl %%3,%%%%edi\n"
  "movl (%%%%esi),%%%%eax\n"
  "subl (%%%%ebx),%%%%eax\n"
  "movl %%%%eax,(%%%%edi)\n"
ENDM
;
; SUB macro. Subtract two numbers in memory and store result in memory.
;
MACRO SUB
  "movl 4*%d(%%%%esi),%%%%eax\n"
  "sbbl 4*%d(%%%%ebx),%%%%eax\n"
  "movl %%%%eax,4*%d(%%%%edi)\n"
ENDM
;
; SUB_END macro. Catch Carry
;
MACRO SUB_END   
  "movl $0,%%%%eax\n"
  "adcl %%%%eax,%%%%eax\n"
  "movl %%%%eax,%%2\n"
  "popl %%%%edi\n"
  "popl %%%%esi\n"
   :
   :"m"(a),"m"(b),"m"(carry),"m"(c)
   :"eax","edi","esi","ebx","memory"
  );
ENDM
;
; DEC_START macro. Do first one.
;
MACRO DEC_START
  ASM (
  "pushl %%%%edi\n"
  "movl %%0,%%%%edi\n"
  "movl %%1,%%%%ebx\n"
  "movl (%%%%ebx),%%%%eax\n"
  "subl %%%%eax,(%%%%edi)\n"
ENDM
;
; DEC macro. Decrement from number in memory. Don't forget borrow.
;
MACRO DEC
  "movl 4*%d(%%%%ebx),%%%%eax\n"
  "sbbl %%%%eax,4*%d(%%%%edi)\n"
ENDM
;
; DEC_END macro
;
MACRO DEC_END
  "movl $0,%%%%eax\n"
  "adcl %%%%eax,%%%%eax\n"
  "movl %%%%eax,%%2\n"
  "popl %%%%edi\n"
   :
   :"m"(a),"m"(b),"m"(carry)
   :"eax","edi","ebx","memory"
  );
ENDM
;
; KADD_START macro
;
MACRO KADD_START
  ASM (
  "pushl %%%%esi\n"
  "pushl %%%%edi\n"
  "movl %%0,%%%%esi\n"
  "movl %%1,%%%%ebx\n"
  "movl %%3,%%%%edi\n"
  "movl %%4,%%%%ecx\n"
  "xorl %%%%eax,%%%%eax\n"
  "k%d:\n"
ENDM
;
; KASL macro
;
MACRO KASL
  "decl %%%%ecx\n"  
  "je k%d\n"
  "leal 4*%d(%%%%esi),%%%%esi\n"
  "leal 4*%d(%%%%ebx),%%%%ebx\n"
  "leal 4*%d(%%%%edi),%%%%edi\n"
  "jmp k%d\n"
  "k%d:\n"
ENDM
;
; KADD_END  macro
;
MACRO KADD_END
  "movl $0,%%%%eax\n"
  "adcl %%%%eax,%%%%eax\n"
  "movl %%%%eax,%%2\n"
  "popl %%%%edi\n"
  "popl %%%%esi\n"
   :
   :"m"(a),"m"(b),"m"(carry),"m"(c),"m"(n)
   :"eax","edi","esi","ebx","ecx","memory"
  );
ENDM
;
; KINC_START macro. Zero carry flag. 
;
MACRO KINC_START
  ASM (
  "pushl %%%%edi\n"
  "movl %%0,%%%%edi\n"
  "movl %%1,%%%%ebx\n"
  "movl %%3,%%%%ecx\n"
  "xorl %%%%eax,%%%%eax\n"
  "k%d:\n"
ENDM
;
; KIDL macro
;
MACRO KIDL
  "decl %%%%ecx\n"
  "je k%d\n"
  "leal 4*%d(%%%%ebx),%%%%ebx\n"
  "leal 4*%d(%%%%edi),%%%%edi\n"
  "jmp k%d\n"
  "k%d:\n"
ENDM
;
; KINC_END macro
;
MACRO KINC_END
  "movl $0,%%%%eax\n"
  "adcl %%%%eax,%%%%eax\n"
  "movl %%%%eax,%%2\n"
  "popl %%%%edi\n"
   :
   :"m"(a),"m"(b),"m"(carry),"m"(n)
   :"eax","edi","ebx","ecx","memory"
  );
ENDM
;
; KDEC_START macro
;
MACRO KDEC_START
  ASM (
  "pushl %%%%edi\n"
  "movl %%0,%%%%edi\n"
  "movl %%1,%%%%ebx\n"
  "movl %%3,%%%%ecx\n"
  "xorl %%%%eax,%%%%eax\n"
  "k%d:\n"
ENDM
;
; KDEC_END macro
;
MACRO KDEC_END
  "movl $0,%%%%eax\n"
  "adcl %%%%eax,%%%%eax\n"
  "movl %%%%eax,%%2\n"
  "popl %%%%edi\n"
   :
   :"m"(a),"m"(b),"m"(carry),"m"(n)
   :"eax","edi","ebx","ecx","memory"
  );
ENDM