X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=tools%2Fmkbridge.c;h=9b874453f326bd4d398f49bf5f99f1c6e71f5111;hb=bd2eb956103ce340cace575fb90a320835100120;hp=705567fa7a94d23d267509e40ffe5777f9c92a1b;hpb=36595fd27d06b03f1abf320bd511aec325845ed5;p=ia32rtools.git

diff --git a/tools/mkbridge.c b/tools/mkbridge.c
index 705567f..9b87445 100644
--- a/tools/mkbridge.c
+++ b/tools/mkbridge.c
@@ -23,13 +23,38 @@ static int is_x86_reg_saved(const char *reg)
 	return !nosave;
 }
 
-static void out_toasm_x86(FILE *f, const char *sym_in,
-	const char *sym_out, const struct parsed_proto *pp)
+// output decorated name
+static const char *pp_to_name(const struct parsed_proto *pp)
+{
+	static char buf[256];
+	char atval[16];
+
+	if (!pp->is_fastcall && pp->argc_reg != 0) {
+		// can only be handled by __cdecl C func
+		snprintf(buf, sizeof(buf), "_%s", pp->name);
+		return buf;
+	}
+
+	atval[0] = 0;
+	if (pp->is_stdcall) {
+		snprintf(atval, sizeof(atval), "@%d",
+			pp->argc * 4);
+	}
+	snprintf(buf, sizeof(buf), "%s%s%s",
+		pp->is_fastcall ? "@" : "_",
+		pp->name, atval);
+
+	return buf;
+}
+
+static void out_toasm_x86(FILE *f, const char *sym_out,
+	const struct parsed_proto *pp)
 {
 	int must_save = 0;
 	int sarg_ofs = 1; // stack offset to args, in DWORDs
 	int args_repushed = 0;
 	int argc_repush;
+	const char *name;
 	int i;
 
 	argc_repush = pp->argc;
@@ -41,10 +66,14 @@ static void out_toasm_x86(FILE *f, const char *sym_in,
 			must_save |= is_x86_reg_saved(pp->arg[i].reg);
 	}
 
-	fprintf(f, ".global _%s\n", sym_in);
-	fprintf(f, "_%s:\n", sym_in);
+	name = pp_to_name(pp);
+	fprintf(f, ".global %s\n", name);
+	fprintf(f, "%s:\n", name);
 
-	if (pp->argc_reg == 0) {
+	if (pp->argc_reg == 0 || pp->is_fastcall) {
+		fprintf(f, "\t# %s\n",
+		  pp->is_fastcall ? "__fastcall" :
+		  (pp->is_stdcall ? "__stdcall" : "__cdecl"));
 		fprintf(f, "\tjmp %s\n\n", sym_out);
 		return;
 	}
@@ -109,6 +138,7 @@ static void out_fromasm_x86(FILE *f, const char *sym,
 {
 	int sarg_ofs = 1; // stack offset to args, in DWORDs
 	int saved_regs = 0;
+	int c_is_stdcall;
 	int argc_repush;
 	int stack_args;
 	int ret64;
@@ -123,21 +153,23 @@ static void out_fromasm_x86(FILE *f, const char *sym,
 
 	ret64 = strstr(pp->ret_type.name, "int64") != NULL;
 
-	fprintf(f, "# %s", pp->is_stdcall ? "__stdcall" : "__cdecl");
+	fprintf(f, "# %s",
+	  pp->is_fastcall ? "__fastcall" :
+	  (pp->is_stdcall ? "__stdcall" : "__cdecl"));
 	if (ret64)
 		 fprintf(f, " ret64");
 	fprintf(f, "\n.global %s\n", sym);
 	fprintf(f, "%s:\n", sym);
 
-	if (pp->argc_reg == 0) {
-		//fprintf(f, "\tjmp _%s\n\n", sym);
-		fprintf(f, "\tjmp _%s", sym);
-		if (pp->is_stdcall && pp->argc > 0)
-			fprintf(f, "@%d", pp->argc * 4);
-		fprintf(f, "\n\n");
+	if ((pp->argc_reg == 0 || pp->is_fastcall)
+	    && !IS(pp->name, "storm_491")) // wants edx save :(
+	{
+		fprintf(f, "\tjmp %s\n\n", pp_to_name(pp));
 		return;
 	}
 
+	c_is_stdcall = (pp->argc_reg == 0 && pp->is_stdcall);
+
 	// at least sc sub_47B150 needs edx to be preserved
 	// int64 returns use edx:eax - no edx save
 	// we use ecx also as scratch
@@ -169,10 +201,9 @@ static void out_fromasm_x86(FILE *f, const char *sym,
 		sarg_ofs++;
 	}
 
-	// no worries about calling conventions - always __cdecl
-	fprintf(f, "\n\tcall _%s\n\n", sym);
+	fprintf(f, "\n\tcall %s\n\n", pp_to_name(pp));
 
-	if (sarg_ofs > saved_regs + 1)
+	if (!c_is_stdcall && sarg_ofs > saved_regs + 1)
 		fprintf(f, "\tadd $%d,%%esp\n",
 			(sarg_ofs - (saved_regs + 1)) * 4);
 
@@ -234,7 +265,7 @@ int main(int argc, char *argv[])
 		if (pp == NULL)
 			goto out;
 
-		out_toasm_x86(fout, sym, sym_noat, pp);
+		out_toasm_x86(fout, sym_noat, pp);
 	}
 
 	fprintf(fout, "# from asm\n\n");