int as68_flag; // as68 kludge mode
int glob_flag; // Assume undefined symbols are global
int lsym_flag; // Include local symbols in object file
-int sbra_flag; // Warn about possible short branches
+int optim_warn_flag; // Warn about possible short branches
int prg_flag; // !=0, produce .PRG executable (2=symbols)
int prg_extend; // !=0, output extended .PRG symbols
int legacy_flag; // Do stuff like insert code in RISC assembler
char * searchpath = NULL; // Search path for include files
char defname[] = "noname.o"; // Default output filename
int optim_flags[OPT_COUNT]; // Specific optimisations on/off matrix
-int optim_pc = 0; // Enforce PC relative
int activecpu = CPU_68000; // Active 68k CPU (68000 by default)
int activefpu = FPU_NONE; // Active FPU (none by default)
int org68k_active = 0; // .org switch for 68k (only with RAW output format)
" -o file Output file name\n"
" +o[value] Turn a specific optimisation on\n"
" Available optimisation values and default settings:\n"
- " o0: Absolute long adddresses to word (on)\n"
- " o1: move.l #x,dn/an to moveq (on)\n"
- " o2: Word branches to short (on)\n"
- " o3: Outer displacement 0(an) to (an) (off)\n"
- " o4: lea size(An),An to addq #size,An (off)\n"
- " o5: Absolute long base displacement to word (off)\n"
- " o6: Null branches to NOP (off)\n"
- " o7: clr.l Dx to moveq #0,Dx (off)\n"
- " o8: adda.w/l #x,Dy to addq.w/l #x,Dy (off)\n"
- " o9: adda.w/l #x,Dy to lea x(Dy),Dy (off)\n"
- " op: Enforce PC relative (off)\n"
+ " o0: Absolute long addresses to word (on)\n"
+ " o1: move.l #x,dn/an to moveq (on)\n"
+ " o2: Word branches to short (on)\n"
+ " o3: Outer displacement 0(an) to (an) (off)\n"
+ " o4: lea size(An),An to addq #size,An (off)\n"
+ " o5: 68020+ Absolute long base/outer displacement to word (off)\n"
+ " o6: Null branches to NOP (off)\n"
+ " o7: clr.l Dx to moveq #0,Dx (off)\n"
+ " o8: adda.w/l #x,Dy to addq.w/l #x,Dy (off)\n"
+ " o9: adda.w/l #x,Dy to lea x(Dy),Dy (off)\n"
+ " op: Enforce PC relative (off)\n"
" ~o[value] Turn a specific optimisation off\n"
" +oall Turn all optimisations on\n"
" ~oall Turn all optimisations off\n"
{
int onoff = 0;
- if (*optstring == '+')
- onoff = 1;
- else if (*optstring != '~')
- return ERROR;
-
- if ((optstring[2] == 'a' || optstring[2] == 'A')
- && (optstring[3] == 'l' || optstring[3] == 'L')
- && (optstring[4] == 'l' || optstring[4] == 'L'))
- {
- memset(optim_flags, onoff, OPT_COUNT * sizeof(int));
- return OK;
- }
- else if (optstring[1] == 'o' || optstring[1] == 'O') // Turn on specific optimisation
+ while (*optstring)
{
- if (optstring[2] == 'p' || optstring[2] == 'P')
+ if (*optstring == '+')
+ onoff = 1;
+ else if (*optstring != '~')
+ return ERROR;
+
+ if ((optstring[2] == 'a' || optstring[2] == 'A')
+ && (optstring[3] == 'l' || optstring[3] == 'L')
+ && (optstring[4] == 'l' || optstring[4] == 'L'))
{
- optim_pc = 1;
- return OK;
+ memset(optim_flags, onoff, OPT_COUNT * sizeof(int));
+ optstring += 5;
}
-
- int opt_no = atoi(&optstring[2]);
-
- if ((opt_no >= 0) && (opt_no < OPT_COUNT))
+ else if (optstring[1] == 'o' || optstring[1] == 'O') // Turn on specific optimisation
{
- optim_flags[opt_no] = onoff;
- return OK;
+ if (optstring[2] == 'p' || optstring[2] == 'P')
+ {
+ optim_flags[OPT_PC_RELATIVE] = onoff;
+ optstring += 3;
+ }
+ else
+ {
+ int opt_no = atoi(&optstring[2]);
+ if ((opt_no >= 0) && (opt_no < OPT_COUNT))
+ {
+ optim_flags[opt_no] = onoff;
+ optstring += 3;
+ // If opt_no is 2 digits then consume an extra character.
+ // Sounds a bit sleazy but we know we're not going to hit
+ // more than 100 optimisation switches so this should be fine.
+ // If we do hit that number then it'll probably be time to burn
+ // the whole codebase and start from scratch.
+ if (opt_no > 9)
+ optstring++;
+ }
+ else
+ return ERROR;
+ }
}
else
+ {
return ERROR;
+ }
+ if (*optstring == ',')
+ optstring++;
}
- else
- {
- return ERROR;
- }
+ return OK;
}
verb_flag = perm_verb_flag; // Initialize verbose flag
as68_flag = 0; // Initialize as68 kludge mode
glob_flag = 0; // Initialize .globl flag
- sbra_flag = 0; // Initialize short branch flag
+ optim_warn_flag = 0; // Initialize short branch flag
debug = 0; // Initialize debug flag
searchpath = NULL; // Initialize search path
objfname = NULL; // Initialize object filename
default: segpadsize = 2; break; // Effective autoeven();
}
break;
- case 's': // Warn about possible short branches
+ case 's': // Warn about possible short branches and applied optimisations
case 'S':
- sbra_flag = 1;
+ optim_warn_flag = 1;
break;
case 'u': // Make undefined symbols .globl
case 'U':
projects / rmac / blobdiff