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renamed registers

tcc-xref
bellard 2002-12-08 14:34:48 +00:00
parent a6c5e2f9ca
commit b5259da4f2
1 changed files with 18 additions and 18 deletions
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36
i386-gen.c
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@ -36,10 +36,10 @@
/* pretty names for the registers */ /* pretty names for the registers */
enum { enum {
REG_EAX = 0, TREG_EAX = 0,
REG_ECX, TREG_ECX,
REG_EDX, TREG_EDX,
REG_ST0, TREG_ST0,
}; };
int reg_classes[NB_REGS] = { int reg_classes[NB_REGS] = {
@ -50,9 +50,9 @@ int reg_classes[NB_REGS] = {
}; };
/* return registers for function */ /* return registers for function */
#define REG_IRET REG_EAX /* single word int return register */ #define REG_IRET TREG_EAX /* single word int return register */
#define REG_LRET REG_EDX /* second word return register (for long long) */ #define REG_LRET TREG_EDX /* second word return register (for long long) */
#define REG_FRET REG_ST0 /* float return register */ #define REG_FRET TREG_ST0 /* float return register */
/* defined if function parameters must be evaluated in reverse order */ /* defined if function parameters must be evaluated in reverse order */
#define INVERT_FUNC_PARAMS #define INVERT_FUNC_PARAMS
@ -647,12 +647,12 @@ void gen_opi(int op)
r = vtop[-1].r; r = vtop[-1].r;
fr = vtop[0].r; fr = vtop[0].r;
vtop--; vtop--;
save_reg(REG_EDX); save_reg(TREG_EDX);
if (op == TOK_UMULL) { if (op == TOK_UMULL) {
o(0xf7); /* mul fr */ o(0xf7); /* mul fr */
o(0xe0 + fr); o(0xe0 + fr);
vtop->r2 = REG_EDX; vtop->r2 = TREG_EDX;
r = REG_EAX; r = TREG_EAX;
} else { } else {
if (op == TOK_UDIV || op == TOK_UMOD) { if (op == TOK_UDIV || op == TOK_UMOD) {
o(0xf7d231); /* xor %edx, %edx, div fr, %eax */ o(0xf7d231); /* xor %edx, %edx, div fr, %eax */
@ -662,9 +662,9 @@ void gen_opi(int op)
o(0xf8 + fr); o(0xf8 + fr);
} }
if (op == '%' || op == TOK_UMOD) if (op == '%' || op == TOK_UMOD)
r = REG_EDX; r = TREG_EDX;
else else
r = REG_EAX; r = TREG_EAX;
} }
vtop->r = r; vtop->r = r;
break; break;
@ -706,8 +706,8 @@ void gen_opf(int op)
} }
if (op >= TOK_ULT && op <= TOK_GT) { if (op >= TOK_ULT && op <= TOK_GT) {
/* load on stack second operand */ /* load on stack second operand */
load(REG_ST0, vtop); load(TREG_ST0, vtop);
save_reg(REG_EAX); /* eax is used by FP comparison code */ save_reg(TREG_EAX); /* eax is used by FP comparison code */
if (op == TOK_GE || op == TOK_GT) if (op == TOK_GE || op == TOK_GT)
swapped = !swapped; swapped = !swapped;
else if (op == TOK_EQ || op == TOK_NE) else if (op == TOK_EQ || op == TOK_NE)
@ -736,7 +736,7 @@ void gen_opf(int op)
} else { } else {
/* no memory reference possible for long double operations */ /* no memory reference possible for long double operations */
if ((vtop->type.t & VT_BTYPE) == VT_LDOUBLE) { if ((vtop->type.t & VT_BTYPE) == VT_LDOUBLE) {
load(REG_ST0, vtop); load(TREG_ST0, vtop);
swapped = !swapped; swapped = !swapped;
} }
@ -791,7 +791,7 @@ void gen_opf(int op)
and 'long long' cases. */ and 'long long' cases. */
void gen_cvt_itof(int t) void gen_cvt_itof(int t)
{ {
save_reg(REG_ST0); save_reg(TREG_ST0);
gv(RC_INT); gv(RC_INT);
if ((vtop->type.t & VT_BTYPE) == VT_LLONG) { if ((vtop->type.t & VT_BTYPE) == VT_LLONG) {
/* signed long long to float/double/long double (unsigned case /* signed long long to float/double/long double (unsigned case
@ -814,7 +814,7 @@ void gen_cvt_itof(int t)
o(0x2404db); /* fildl (%esp) */ o(0x2404db); /* fildl (%esp) */
o(0x04c483); /* add $4, %esp */ o(0x04c483); /* add $4, %esp */
} }
vtop->r = REG_ST0; vtop->r = TREG_ST0;
} }
/* convert fp to int 't' type */ /* convert fp to int 't' type */
@ -902,7 +902,7 @@ void gen_bounded_ptr_add(void)
oad(0xe8, -4); oad(0xe8, -4);
/* returned pointer is in eax */ /* returned pointer is in eax */
vtop++; vtop++;
vtop->r = REG_EAX | VT_BOUNDED; vtop->r = TREG_EAX | VT_BOUNDED;
/* address of bounding function call point */ /* address of bounding function call point */
vtop->c.ul = (cur_text_section->reloc->data_offset - sizeof(Elf32_Rel)); vtop->c.ul = (cur_text_section->reloc->data_offset - sizeof(Elf32_Rel));
} }