[ia32rtools.git] / tools / mkbridge.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "my_assert.h"
#include "my_str.h"

#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
#define IS(w, y) !strcmp(w, y)

#include "protoparse.h"

static const char *c_save_regs[] = { "ebx", "esi", "edi", "ebp" };

static int is_x86_reg_saved(const char *reg)
{
	static const char *nosave_regs[] = { "eax", "edx", "ecx" };
	int nosave = 0;
	int r;

	for (r = 0; r < ARRAY_SIZE(nosave_regs); r++)
		if (strcmp(reg, nosave_regs[r]) == 0)
			nosave = 1;

	return !nosave;
}

// 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;
	if (pp->is_vararg)
		argc_repush = ARRAY_SIZE(pp->arg); // hopefully enough?

	for (i = 0; i < pp->argc; i++) {
		if (pp->arg[i].reg != NULL)
			must_save |= is_x86_reg_saved(pp->arg[i].reg);
	}

	name = pp_to_name(pp);
	fprintf(f, ".global %s\n", name);
	fprintf(f, "%s:\n", name);

	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;
	}

	if (pp->argc_stack == 0 && !must_save && !pp->is_stdcall
	     && !pp->is_vararg && !pp->has_retreg)
	{
		// load arg regs
		for (i = 0; i < pp->argc; i++) {
			fprintf(f, "\tmovl %d(%%esp), %%%s\n",
				(i + sarg_ofs) * 4, pp->arg[i].reg);
		}
		fprintf(f, "\tjmp %s\n\n", sym_out);
		return;
	}

	// asm_stack_args | saved_regs | ra | args_from_c

	// save the regs
	// because we don't always know what we are calling,
	// be safe and save everything that has to be saved in __cdecl
	for (i = 0; i < ARRAY_SIZE(c_save_regs); i++) {
		fprintf(f, "\tpushl %%%s\n", c_save_regs[i]);
		sarg_ofs++;
	}

	// reconstruct arg stack for asm
	for (i = argc_repush - 1; i >= 0; i--) {
		if (pp->arg[i].reg == NULL) {
			fprintf(f, "\tmovl %d(%%esp), %%eax\n",
				(i + sarg_ofs) * 4);
			fprintf(f, "\tpushl %%eax\n");
			sarg_ofs++;
			args_repushed++;
		}
	}

	// load arg regs
	for (i = 0; i < pp->argc; i++) {
		if (pp->arg[i].reg != NULL) {
			fprintf(f, "\tmovl %d(%%esp), %%%s\n",
				(i + sarg_ofs) * 4, pp->arg[i].reg);
			if (pp->arg[i].type.is_retreg)
				fprintf(f, "\tmovl (%%%s), %%%s\n",
					pp->arg[i].reg, pp->arg[i].reg);
		}
	}

	fprintf(f, "\n\t# %s\n", pp->is_stdcall ? "__stdcall" : "__cdecl");
	fprintf(f, "\tcall %s\n\n", sym_out);

	if (args_repushed && !pp->is_stdcall) {
		fprintf(f, "\tadd $%d,%%esp\n", args_repushed * 4);
		sarg_ofs -= args_repushed;
	}

	// update the retreg regs
	if (pp->has_retreg) {
		for (i = 0; i < pp->argc; i++) {
			if (pp->arg[i].type.is_retreg) {
				fprintf(f, "\tmovl %d(%%esp), %%ecx\n"
					   "\tmovl %%%s, (%%ecx)\n",
					(i + sarg_ofs) * 4, pp->arg[i].reg);
			}
		}
	}

	// restore regs
	for (i = ARRAY_SIZE(c_save_regs) - 1; i >= 0; i--)
		fprintf(f, "\tpopl %%%s\n", c_save_regs[i]);

	fprintf(f, "\tret\n\n");
}

static void out_fromasm_x86(FILE *f, const char *sym,
	const struct parsed_proto *pp)
{
	int reg_ofs[ARRAY_SIZE(pp->arg)];
	int sarg_ofs = 1; // stack offset to args, in DWORDs
	int saved_regs = 0;
	int ecx_ofs = -1;
	int edx_ofs = -1;
	int c_is_stdcall;
	int argc_repush;
	int stack_args;
	int ret64;
	int i;

	argc_repush = pp->argc;
	stack_args = pp->argc_stack;
	if (pp->is_vararg) {
		argc_repush = ARRAY_SIZE(pp->arg); // hopefully enough?
		stack_args = argc_repush - pp->argc_reg;
	}

	ret64 = strstr(pp->ret_type.name, "int64") != NULL;

	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 || 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
	fprintf(f, "\tpushl %%ecx\n");
	saved_regs++;
	sarg_ofs++;
	ecx_ofs = sarg_ofs;
	if (!ret64) {
		fprintf(f, "\tpushl %%edx\n");
		saved_regs++;
		sarg_ofs++;
		edx_ofs = sarg_ofs;
	}

	// need space for retreg args
	if (pp->has_retreg) {
		for (i = 0; i < pp->argc; i++) {
			if (!pp->arg[i].type.is_retreg)
				continue;
			if (IS(pp->arg[i].reg, "ecx") && ecx_ofs >= 0) {
				reg_ofs[i] = ecx_ofs;
				continue;
			}
			if (IS(pp->arg[i].reg, "edx") && edx_ofs >= 0) {
				reg_ofs[i] = edx_ofs;
				continue;
			}
			fprintf(f, "\tpushl %%%s\n", pp->arg[i].reg);
			saved_regs++;
			sarg_ofs++;
			reg_ofs[i] = sarg_ofs;
		}
	}

	// construct arg stack
	for (i = argc_repush - 1; i >= 0; i--) {
		if (pp->arg[i].reg == NULL) {
			fprintf(f, "\tmovl %d(%%esp), %%ecx\n",
				(sarg_ofs + stack_args - 1) * 4);
			fprintf(f, "\tpushl %%ecx\n");
			stack_args--;
		}
		else {
			const char *reg = pp->arg[i].reg;
			if (pp->arg[i].type.is_retreg) {
				reg = "ecx";
				fprintf(f, "\tlea %d(%%esp), %%ecx\n",
				  (sarg_ofs - reg_ofs[i]) * 4);
			}
			else if (IS(reg, "ecx"))
				// must reload original ecx
				fprintf(f, "\tmovl %d(%%esp), %%ecx\n",
					(sarg_ofs - 2) * 4);

			fprintf(f, "\tpushl %%%s\n", reg);
		}
		sarg_ofs++;
	}

	fprintf(f, "\n\tcall %s\n\n", pp_to_name(pp));

	if (!c_is_stdcall && sarg_ofs > saved_regs + 1)
		fprintf(f, "\tadd $%d,%%esp\n",
			(sarg_ofs - (saved_regs + 1)) * 4);

	// pop retregs
	if (pp->has_retreg) {
		for (i = pp->argc - 1; i >= 0; i--) {
			if (!pp->arg[i].type.is_retreg)
				continue;
			if (IS(pp->arg[i].reg, "ecx") && ecx_ofs >= 0) {
				continue;
			}
			if (IS(pp->arg[i].reg, "edx") && edx_ofs >= 0) {
				continue;
			}
			fprintf(f, "\tpopl %%%s\n", pp->arg[i].reg);
		}
	}

	if (!ret64)
		fprintf(f, "\tpopl %%edx\n");
	fprintf(f, "\tpopl %%ecx\n");

	if (pp->is_stdcall && pp->argc_stack)
		fprintf(f, "\tret $%d\n\n", pp->argc_stack * 4);
	else
		fprintf(f, "\tret\n\n");
}

int main(int argc, char *argv[])
{
	FILE *fout, *fsyms_to, *fsyms_from, *fhdr;
	const struct parsed_proto *pp;
	char line[256];
	char sym_noat[256];
	char sym[256];
	char *p;
	int ret = 1;

	if (argc != 5) {
		printf("usage:\n%s <bridge.s> <toasm_symf> <fromasm_symf> <hdrf>\n",
			argv[0]);
		return 1;
	}

	hdrfn = argv[4];
	fhdr = fopen(hdrfn, "r");
	my_assert_not(fhdr, NULL);

	fsyms_from = fopen(argv[3], "r");
	my_assert_not(fsyms_from, NULL);

	fsyms_to = fopen(argv[2], "r");
	my_assert_not(fsyms_to, NULL);

	fout = fopen(argv[1], "w");
	my_assert_not(fout, NULL);

	fprintf(fout, ".text\n\n");
	fprintf(fout, "# to asm\n\n");

	while (fgets(line, sizeof(line), fsyms_to))
	{
		next_word(sym, sizeof(sym), line);
		if (sym[0] == 0 || sym[0] == ';' || sym[0] == '#')
			continue;

		// IDA asm doesn't do '@' notation..
		strcpy(sym_noat, sym);
		p = strchr(sym_noat, '@');
		if (p != NULL)
			*p = 0;

		pp = proto_parse(fhdr, sym_noat, 0);
		if (pp == NULL)
			goto out;

		out_toasm_x86(fout, sym_noat, pp);
	}

	fprintf(fout, "# from asm\n\n");

	while (fgets(line, sizeof(line), fsyms_from))
	{
		next_word(sym, sizeof(sym), line);
		if (sym[0] == 0 || sym[0] == ';' || sym[0] == '#')
			continue;

		pp = proto_parse(fhdr, sym, 0);
		if (pp == NULL)
			goto out;

		out_fromasm_x86(fout, sym, pp);
	}

	ret = 0;
out:
	fclose(fout);
	fclose(fsyms_to);
	fclose(fsyms_from);
	fclose(fhdr);
	if (ret)
		remove(argv[1]);

	return ret;
}
Commit	Line	Data
57e4efe9	1	#include <stdio.h>
	2	#include <stdlib.h>
	3	#include <string.h>
	4
	5	#include "my_assert.h"
	6	#include "my_str.h"
	7
232aca37	8	#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
3e52f54c	9	#define IS(w, y) !strcmp(w, y)
232aca37	10
c36e914d	11	#include "protoparse.h"
232aca37	12
1f84f6b3	13	static const char *c_save_regs[] = { "ebx", "esi", "edi", "ebp" };
1f84f6b3	14
232aca37	15	static int is_x86_reg_saved(const char *reg)
	16	{
	17	static const char *nosave_regs[] = { "eax", "edx", "ecx" };
	18	int nosave = 0;
	19	int r;
	20
	21	for (r = 0; r < ARRAY_SIZE(nosave_regs); r++)
	22	if (strcmp(reg, nosave_regs[r]) == 0)
	23	nosave = 1;
	24
	25	return !nosave;
	26	}
	27
bd2eb956	28	// output decorated name
	29	static const char pp_to_name(const struct parsed_proto pp)
	30	{
	31	static char buf[256];
	32	char atval[16];
	33
	34	if (!pp->is_fastcall && pp->argc_reg != 0) {
	35	// can only be handled by __cdecl C func
	36	snprintf(buf, sizeof(buf), "_%s", pp->name);
	37	return buf;
	38	}
	39
	40	atval[0] = 0;
	41	if (pp->is_stdcall) {
	42	snprintf(atval, sizeof(atval), "@%d",
	43	pp->argc * 4);
	44	}
	45	snprintf(buf, sizeof(buf), "%s%s%s",
	46	pp->is_fastcall ? "@" : "_",
	47	pp->name, atval);
	48
	49	return buf;
	50	}
	51
	52	static void out_toasm_x86(FILE f, const char sym_out,
	53	const struct parsed_proto *pp)
232aca37	54	{
232aca37	55	int must_save = 0;
	56	int sarg_ofs = 1; // stack offset to args, in DWORDs
	57	int args_repushed = 0;
4f12f671	58	int argc_repush;
bd2eb956	59	const char *name;
232aca37	60	int i;
232aca37	61
4f12f671	62	argc_repush = pp->argc;
	63	if (pp->is_vararg)
	64	argc_repush = ARRAY_SIZE(pp->arg); // hopefully enough?
	65
c36e914d	66	for (i = 0; i < pp->argc; i++) {
	67	if (pp->arg[i].reg != NULL)
	68	must_save \|= is_x86_reg_saved(pp->arg[i].reg);
232aca37	69	}
232aca37	70
bd2eb956	71	name = pp_to_name(pp);
	72	fprintf(f, ".global %s\n", name);
	73	fprintf(f, "%s:\n", name);
232aca37	74
c0050df6	75	if (pp->argc_reg == 0 \|\| pp->is_fastcall) {
	76	fprintf(f, "\t# %s\n",
	77	pp->is_fastcall ? "__fastcall" :
	78	(pp->is_stdcall ? "__stdcall" : "__cdecl"));
54e763a1	79	fprintf(f, "\tjmp %s\n\n", sym_out);
232aca37	80	return;
	81	}
	82
4f12f671	83	if (pp->argc_stack == 0 && !must_save && !pp->is_stdcall
1f84f6b3	84	&& !pp->is_vararg && !pp->has_retreg)
4f12f671	85	{
232aca37	86	// load arg regs
c36e914d	87	for (i = 0; i < pp->argc; i++) {
232aca37	88	fprintf(f, "\tmovl %d(%%esp), %%%s\n",
c36e914d	89	(i + sarg_ofs) * 4, pp->arg[i].reg);
232aca37	90	}
54e763a1	91	fprintf(f, "\tjmp %s\n\n", sym_out);
232aca37	92	return;
	93	}
	94
1f84f6b3	95	// asm_stack_args \| saved_regs \| ra \| args_from_c
1f84f6b3	96
232aca37	97	// save the regs
1f84f6b3	98	// because we don't always know what we are calling,
	99	// be safe and save everything that has to be saved in __cdecl
	100	for (i = 0; i < ARRAY_SIZE(c_save_regs); i++) {
	101	fprintf(f, "\tpushl %%%s\n", c_save_regs[i]);
	102	sarg_ofs++;
232aca37	103	}
232aca37	104
1f84f6b3	105	// reconstruct arg stack for asm
4f12f671	106	for (i = argc_repush - 1; i >= 0; i--) {
c36e914d	107	if (pp->arg[i].reg == NULL) {
232aca37	108	fprintf(f, "\tmovl %d(%%esp), %%eax\n",
	109	(i + sarg_ofs) * 4);
	110	fprintf(f, "\tpushl %%eax\n");
	111	sarg_ofs++;
	112	args_repushed++;
	113	}
	114	}
232aca37	115
232aca37	116	// load arg regs
c36e914d	117	for (i = 0; i < pp->argc; i++) {
c36e914d	118	if (pp->arg[i].reg != NULL) {
232aca37	119	fprintf(f, "\tmovl %d(%%esp), %%%s\n",
c36e914d	120	(i + sarg_ofs) * 4, pp->arg[i].reg);
1f84f6b3	121	if (pp->arg[i].type.is_retreg)
	122	fprintf(f, "\tmovl (%%%s), %%%s\n",
	123	pp->arg[i].reg, pp->arg[i].reg);
232aca37	124	}
	125	}
	126
c36e914d	127	fprintf(f, "\n\t# %s\n", pp->is_stdcall ? "__stdcall" : "__cdecl");
54e763a1	128	fprintf(f, "\tcall %s\n\n", sym_out);
232aca37	129
1f84f6b3	130	if (args_repushed && !pp->is_stdcall) {
a51421fa	131	fprintf(f, "\tadd $%d,%%esp\n", args_repushed * 4);
1f84f6b3	132	sarg_ofs -= args_repushed;
1f84f6b3	133	}
232aca37	134
1f84f6b3	135	// update the retreg regs
	136	if (pp->has_retreg) {
	137	for (i = 0; i < pp->argc; i++) {
	138	if (pp->arg[i].type.is_retreg) {
	139	fprintf(f, "\tmovl %d(%%esp), %%ecx\n"
	140	"\tmovl %%%s, (%%ecx)\n",
	141	(i + sarg_ofs) * 4, pp->arg[i].reg);
	142	}
	143	}
232aca37	144	}
232aca37	145
1f84f6b3	146	// restore regs
	147	for (i = ARRAY_SIZE(c_save_regs) - 1; i >= 0; i--)
	148	fprintf(f, "\tpopl %%%s\n", c_save_regs[i]);
	149
232aca37	150	fprintf(f, "\tret\n\n");
	151	}
	152
54e763a1	153	static void out_fromasm_x86(FILE f, const char sym,
54e763a1	154	const struct parsed_proto *pp)
232aca37	155	{
1f84f6b3	156	int reg_ofs[ARRAY_SIZE(pp->arg)];
232aca37	157	int sarg_ofs = 1; // stack offset to args, in DWORDs
7ae48d73	158	int saved_regs = 0;
1f84f6b3	159	int ecx_ofs = -1;
1f84f6b3	160	int edx_ofs = -1;
f2de0a97	161	int c_is_stdcall;
4f12f671	162	int argc_repush;
232aca37	163	int stack_args;
7ae48d73	164	int ret64;
232aca37	165	int i;
232aca37	166
4f12f671	167	argc_repush = pp->argc;
	168	stack_args = pp->argc_stack;
	169	if (pp->is_vararg) {
	170	argc_repush = ARRAY_SIZE(pp->arg); // hopefully enough?
	171	stack_args = argc_repush - pp->argc_reg;
	172	}
	173
7ae48d73	174	ret64 = strstr(pp->ret_type.name, "int64") != NULL;
7ae48d73	175
c0050df6	176	fprintf(f, "# %s",
	177	pp->is_fastcall ? "__fastcall" :
	178	(pp->is_stdcall ? "__stdcall" : "__cdecl"));
7ae48d73	179	if (ret64)
	180	fprintf(f, " ret64");
	181	fprintf(f, "\n.global %s\n", sym);
232aca37	182	fprintf(f, "%s:\n", sym);
232aca37	183
f2de0a97	184	if ((pp->argc_reg == 0 \|\| pp->is_fastcall)
	185	&& !IS(pp->name, "storm_491")) // wants edx save :(
	186	{
bd2eb956	187	fprintf(f, "\tjmp %s\n\n", pp_to_name(pp));
232aca37	188	return;
	189	}
	190
f2de0a97	191	c_is_stdcall = (pp->argc_reg == 0 && pp->is_stdcall);
f2de0a97	192
7ae48d73	193	// at least sc sub_47B150 needs edx to be preserved
	194	// int64 returns use edx:eax - no edx save
	195	// we use ecx also as scratch
	196	fprintf(f, "\tpushl %%ecx\n");
	197	saved_regs++;
232aca37	198	sarg_ofs++;
1f84f6b3	199	ecx_ofs = sarg_ofs;
7ae48d73	200	if (!ret64) {
	201	fprintf(f, "\tpushl %%edx\n");
	202	saved_regs++;
	203	sarg_ofs++;
1f84f6b3	204	edx_ofs = sarg_ofs;
	205	}
	206
	207	// need space for retreg args
	208	if (pp->has_retreg) {
	209	for (i = 0; i < pp->argc; i++) {
	210	if (!pp->arg[i].type.is_retreg)
	211	continue;
	212	if (IS(pp->arg[i].reg, "ecx") && ecx_ofs >= 0) {
	213	reg_ofs[i] = ecx_ofs;
	214	continue;
	215	}
	216	if (IS(pp->arg[i].reg, "edx") && edx_ofs >= 0) {
	217	reg_ofs[i] = edx_ofs;
	218	continue;
	219	}
	220	fprintf(f, "\tpushl %%%s\n", pp->arg[i].reg);
	221	saved_regs++;
	222	sarg_ofs++;
	223	reg_ofs[i] = sarg_ofs;
	224	}
7ae48d73	225	}
232aca37	226
232aca37	227	// construct arg stack
4f12f671	228	for (i = argc_repush - 1; i >= 0; i--) {
c36e914d	229	if (pp->arg[i].reg == NULL) {
7ae48d73	230	fprintf(f, "\tmovl %d(%%esp), %%ecx\n",
232aca37	231	(sarg_ofs + stack_args - 1) * 4);
7ae48d73	232	fprintf(f, "\tpushl %%ecx\n");
232aca37	233	stack_args--;
	234	}
	235	else {
1f84f6b3	236	const char *reg = pp->arg[i].reg;
	237	if (pp->arg[i].type.is_retreg) {
	238	reg = "ecx";
	239	fprintf(f, "\tlea %d(%%esp), %%ecx\n",
	240	(sarg_ofs - reg_ofs[i]) * 4);
	241	}
	242	else if (IS(reg, "ecx"))
7ae48d73	243	// must reload original ecx
7ae48d73	244	fprintf(f, "\tmovl %d(%%esp), %%ecx\n",
f3d05b09	245	(sarg_ofs - 2) * 4);
f3d05b09	246
1f84f6b3	247	fprintf(f, "\tpushl %%%s\n", reg);
232aca37	248	}
	249	sarg_ofs++;
	250	}
	251
bd2eb956	252	fprintf(f, "\n\tcall %s\n\n", pp_to_name(pp));
232aca37	253
f2de0a97	254	if (!c_is_stdcall && sarg_ofs > saved_regs + 1)
7ae48d73	255	fprintf(f, "\tadd $%d,%%esp\n",
7ae48d73	256	(sarg_ofs - (saved_regs + 1)) * 4);
232aca37	257
1f84f6b3	258	// pop retregs
	259	if (pp->has_retreg) {
	260	for (i = pp->argc - 1; i >= 0; i--) {
	261	if (!pp->arg[i].type.is_retreg)
	262	continue;
	263	if (IS(pp->arg[i].reg, "ecx") && ecx_ofs >= 0) {
	264	continue;
	265	}
	266	if (IS(pp->arg[i].reg, "edx") && edx_ofs >= 0) {
	267	continue;
	268	}
	269	fprintf(f, "\tpopl %%%s\n", pp->arg[i].reg);
	270	}
	271	}
	272
7ae48d73	273	if (!ret64)
	274	fprintf(f, "\tpopl %%edx\n");
	275	fprintf(f, "\tpopl %%ecx\n");
232aca37	276
c36e914d	277	if (pp->is_stdcall && pp->argc_stack)
c36e914d	278	fprintf(f, "\tret $%d\n\n", pp->argc_stack * 4);
232aca37	279	else
	280	fprintf(f, "\tret\n\n");
	281	}
	282
57e4efe9	283	int main(int argc, char *argv[])
57e4efe9	284	{
232aca37	285	FILE fout, fsyms_to, fsyms_from, fhdr;
bd96f656	286	const struct parsed_proto *pp;
57e4efe9	287	char line[256];
54e763a1	288	char sym_noat[256];
57e4efe9	289	char sym[256];
54e763a1	290	char *p;
54e763a1	291	int ret = 1;
57e4efe9	292
232aca37	293	if (argc != 5) {
232aca37	294	printf("usage:\n%s <bridge.s> <toasm_symf> <fromasm_symf> <hdrf>\n",
57e4efe9	295	argv[0]);
	296	return 1;
	297	}
	298
232aca37	299	hdrfn = argv[4];
57e4efe9	300	fhdr = fopen(hdrfn, "r");
	301	my_assert_not(fhdr, NULL);
	302
232aca37	303	fsyms_from = fopen(argv[3], "r");
	304	my_assert_not(fsyms_from, NULL);
	305
	306	fsyms_to = fopen(argv[2], "r");
	307	my_assert_not(fsyms_to, NULL);
57e4efe9	308
	309	fout = fopen(argv[1], "w");
	310	my_assert_not(fout, NULL);
	311
	312	fprintf(fout, ".text\n\n");
232aca37	313	fprintf(fout, "# to asm\n\n");
57e4efe9	314
232aca37	315	while (fgets(line, sizeof(line), fsyms_to))
57e4efe9	316	{
	317	next_word(sym, sizeof(sym), line);
	318	if (sym[0] == 0 \|\| sym[0] == ';' \|\| sym[0] == '#')
	319	continue;
	320
54e763a1	321	// IDA asm doesn't do '@' notation..
	322	strcpy(sym_noat, sym);
	323	p = strchr(sym_noat, '@');
	324	if (p != NULL)
	325	*p = 0;
	326
36595fd2	327	pp = proto_parse(fhdr, sym_noat, 0);
bd96f656	328	if (pp == NULL)
232aca37	329	goto out;
57e4efe9	330
bd2eb956	331	out_toasm_x86(fout, sym_noat, pp);
232aca37	332	}
57e4efe9	333
232aca37	334	fprintf(fout, "# from asm\n\n");
57e4efe9	335
232aca37	336	while (fgets(line, sizeof(line), fsyms_from))
	337	{
	338	next_word(sym, sizeof(sym), line);
	339	if (sym[0] == 0 \|\| sym[0] == ';' \|\| sym[0] == '#')
	340	continue;
57e4efe9	341
36595fd2	342	pp = proto_parse(fhdr, sym, 0);
bd96f656	343	if (pp == NULL)
232aca37	344	goto out;
57e4efe9	345
bd96f656	346	out_fromasm_x86(fout, sym, pp);
57e4efe9	347	}
57e4efe9	348
232aca37	349	ret = 0;
232aca37	350	out:
57e4efe9	351	fclose(fout);
232aca37	352	fclose(fsyms_to);
	353	fclose(fsyms_from);
	354	fclose(fhdr);
	355	if (ret)
	356	remove(argv[1]);
	357
	358	return ret;
57e4efe9	359	}