d0p1/tcc-stupidos
1
1
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

x86-64: fix gtst, back to only 5 regs for now

Browse source
This commit is contained in:
grischka 2009-12-20 20:33:21 +01:00
parent 070b86a870
commit b54862406e
1 changed files with 9 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

26
x86_64-gen.c
View file

@ -270,7 +270,6 @@ static void gen_gotpcrel(int r, Sym *sym, int c)
greloc(cur_text_section, sym, ind, R_X86_64_PC32); greloc(cur_text_section, sym, ind, R_X86_64_PC32);
#endif #endif
gen_le32(0); gen_le32(0);
if (c) { if (c) {
/* we use add c, %xxx for displacement */ /* we use add c, %xxx for displacement */
orex(1, r, 0, 0x81); orex(1, r, 0, 0x81);
@ -323,8 +322,8 @@ static void gen_modrm(int op_reg, int r, Sym *sym, int c)
static void gen_modrm64(int opcode, int op_reg, int r, Sym *sym, int c) static void gen_modrm64(int opcode, int op_reg, int r, Sym *sym, int c)
{ {
int is_got; int is_got;
orex(1, r, op_reg, opcode);
is_got = (op_reg & TREG_MEM) && !(sym->type.t & VT_STATIC); is_got = (op_reg & TREG_MEM) && !(sym->type.t & VT_STATIC);
orex(1, r, op_reg, opcode);
gen_modrm_impl(op_reg, r, sym, c, is_got); gen_modrm_impl(op_reg, r, sym, c, is_got);
} }
@ -833,8 +832,6 @@ void gfunc_call(int nb_args)
} }
} }
save_regs(0); /* save used temporary registers */
/* for struct arguments, we need to call memcpy and the function /* for struct arguments, we need to call memcpy and the function
call breaks register passing arguments we are preparing. call breaks register passing arguments we are preparing.
So, we process arguments which will be passed by stack first. */ So, we process arguments which will be passed by stack first. */
@ -899,6 +896,7 @@ void gfunc_call(int nb_args)
} }
vtop = orig_vtop; vtop = orig_vtop;
save_regs(0); /* save used temporary registers */
/* then, we prepare register passing arguments. /* then, we prepare register passing arguments.
Note that we cannot set RDX and RCX in this loop because gv() Note that we cannot set RDX and RCX in this loop because gv()
@ -922,19 +920,13 @@ void gfunc_call(int nb_args)
/* simple type */ /* simple type */
/* XXX: implicit cast ? */ /* XXX: implicit cast ? */
if (j < REGN) { if (j < REGN) {
int d = arg_regs[j];
r = gv(RC_INT); r = gv(RC_INT);
if (j < 2) { if (j == 2 || j == 3)
o(0x8948); /* mov */
o(0xc0 + r * 8 + arg_regs[j]);
} else if (j < 4) {
o(0x8949); /* mov */
/* j=2: r10, j=3: r11 */ /* j=2: r10, j=3: r11 */
o(0xc0 + r * 8 + j); d = j + 8;
} else { orex(1,d,r,0x89); /* mov */
o(0x8949); /* mov */ o(0xc0 + REG_VALUE(r) * 8 + REG_VALUE(d));
/* j=4: r8, j=5: r9 */
o(0xc0 + r * 8 + j - 4);
}
} }
} }
vtop--; vtop--;
@ -1168,8 +1160,8 @@ int gtst(int inv, int t)
t = gjmp(t); t = gjmp(t);
} else { } else {
v = gv(RC_INT); v = gv(RC_INT);
o(0x85); orex(0,v,v,0x85);
o(0xc0 + v * 9); o(0xc0 + REG_VALUE(v) * 9);
g(0x0f); g(0x0f);
t = psym(0x85 ^ inv, t); t = psym(0x85 ^ inv, t);
} }