From ef3d38c5c9d534099aae61651da3c3aa1ad3c6ab Mon Sep 17 00:00:00 2001
From: gus knight <waddlesplash@gmail.com>
Date: Wed, 29 Jul 2015 16:57:41 -0400
Subject: Revert "fix-mixed-struct (patch by Pip Cet)"

This reverts commit 4e04f67c94c97b4f28a4d73759a0ad38fb3a10f7. Requested by grischka.
---
 tccgen.c | 86 ++++------------------------------------------------------------
 1 file changed, 5 insertions(+), 81 deletions(-)

(limited to 'tccgen.c')

diff --git a/tccgen.c b/tccgen.c
index 5ed7b34..fcec8f1 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -525,7 +525,7 @@ ST_FUNC void vpushv(SValue *v)
     *vtop = *v;
 }
 
-ST_FUNC void vdup(void)
+static void vdup(void)
 {
     vpushv(vtop);
 }
@@ -4200,7 +4200,6 @@ ST_FUNC void unary(void)
             SValue ret;
             Sym *sa;
             int nb_args, ret_nregs, ret_align, regsize, variadic;
-            RegArgs args;
 
             /* function call  */
             if ((vtop->type.t & VT_BTYPE) != VT_FUNC) {
@@ -4225,10 +4224,8 @@ ST_FUNC void unary(void)
             /* compute first implicit argument if a structure is returned */
             if ((s->type.t & VT_BTYPE) == VT_STRUCT) {
                 variadic = (s->c == FUNC_ELLIPSIS);
-                gfunc_sret(&s->type, variadic, &ret.type,
-                           &ret_align, &regsize, &args);
-                ret_nregs = regargs_nregs(&args);
-
+                ret_nregs = gfunc_sret(&s->type, variadic, &ret.type,
+                                       &ret_align, &regsize);
                 if (!ret_nregs) {
                     /* get some space for the returned structure */
                     size = type_size(&s->type, &align);
@@ -4306,10 +4303,6 @@ ST_FUNC void unary(void)
             /* handle packed struct return */
             if (((s->type.t & VT_BTYPE) == VT_STRUCT) && ret_nregs) {
                 int addr, offset;
-#if defined(TCC_TARGET_X86_64) && !defined(TCC_TARGET_PE)
-                int i;
-#endif
-
 
                 size = type_size(&s->type, &align);
 		/* We're writing whole regs often, make sure there's enough
@@ -4318,34 +4311,6 @@ ST_FUNC void unary(void)
 		  align = regsize;
                 loc = (loc - size) & -align;
                 addr = loc;
-#if defined(TCC_TARGET_X86_64) && !defined(TCC_TARGET_PE)
-                for (i=0; i<REG_ARGS_MAX; i++) {
-                    offset = args.ireg[i];
-
-                    if (offset == -1)
-                        break;
-
-                    ret.type.t = VT_LLONG;
-                    vset(&ret.type, VT_LOCAL | VT_LVAL, addr + offset);
-                    vsetc(&ret.type, i ? REG_LRET : REG_IRET, &ret.c);
-                    vstore();
-                    vtop--;
-                    vtop--;
-                }
-                for (i=0; i<REG_ARGS_MAX; i++) {
-                    offset = args.freg[i];
-
-                    if (offset == -1)
-                        break;
-
-                    ret.type.t = VT_DOUBLE;
-                    vset(&ret.type, VT_LOCAL | VT_LVAL, addr + offset);
-                    vsetc(&ret.type, i ? REG_QRET : REG_FRET, &ret.c);
-                    vstore();
-                    vtop--;
-                    vtop--;
-                }
-#else
                 offset = 0;
                 for (;;) {
                     vset(&ret.type, VT_LOCAL | VT_LVAL, addr + offset);
@@ -4356,7 +4321,6 @@ ST_FUNC void unary(void)
                         break;
                     offset += regsize;
                 }
-#endif
                 vset(&s->type, VT_LOCAL | VT_LVAL, addr);
             }
         } else {
@@ -4927,11 +4891,8 @@ static void block(int *bsym, int *csym, int *case_sym, int *def_sym,
             if ((func_vt.t & VT_BTYPE) == VT_STRUCT) {
                 CType type, ret_type;
                 int ret_align, ret_nregs, regsize;
-                RegArgs args;
-
-                gfunc_sret(&func_vt, func_var, &ret_type,
-                           &ret_align, &regsize, &args);
-                ret_nregs = regargs_nregs(&args);
+                ret_nregs = gfunc_sret(&func_vt, func_var, &ret_type,
+                                       &ret_align, &regsize);
                 if (0 == ret_nregs) {
                     /* if returning structure, must copy it to implicit
                        first pointer arg location */
@@ -4945,9 +4906,6 @@ static void block(int *bsym, int *csym, int *case_sym, int *def_sym,
                 } else {
                     /* returning structure packed into registers */
                     int r, size, addr, align;
-#if defined(TCC_TARGET_X86_64) && !defined(TCC_TARGET_PE)
-                    int i;
-#endif
                     size = type_size(&func_vt,&align);
                     if ((vtop->r != (VT_LOCAL | VT_LVAL) || (vtop->c.i & (ret_align-1)))
                         && (align & (ret_align-1))) {
@@ -4961,39 +4919,6 @@ static void block(int *bsym, int *csym, int *case_sym, int *def_sym,
                         vset(&ret_type, VT_LOCAL | VT_LVAL, addr);
                     }
                     vtop->type = ret_type;
-#if defined(TCC_TARGET_X86_64) && !defined(TCC_TARGET_PE)
-                    for (i=0; i<REG_ARGS_MAX; i++) {
-                        int off = args.ireg[i];
-
-                        if (off == -1)
-                            break;
-
-                        r = i ? RC_LRET : RC_IRET;
-
-                        vdup();
-                        vtop->c.i += off;
-                        vtop->type.t = VT_LLONG;
-                        gv(r);
-                        vpop();
-                    }
-                    for (i=0; i<REG_ARGS_MAX; i++) {
-                        int off = args.freg[i];
-
-                        if (off == -1)
-                            break;
-
-                        /* We assume that when a structure is returned in multiple
-                           registers, their classes are consecutive values of the
-                           suite s(n) = 2^n */
-                        r = rc_fret(ret_type.t) << i;
-
-                        vdup();
-                        vtop->c.i += off;
-                        vtop->type.t = VT_DOUBLE;
-                        gv(r);
-                        vpop();
-                    }
-#else
                     if (is_float(ret_type.t))
                         r = rc_fret(ret_type.t);
                     else
@@ -5010,7 +4935,6 @@ static void block(int *bsym, int *csym, int *case_sym, int *def_sym,
                         vtop->c.i += regsize;
                         vtop->r = VT_LOCAL | VT_LVAL;
                     }
-#endif
                 }
             } else if (is_float(func_vt.t)) {
                 gv(rc_fret(func_vt.t));
-- 
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