X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=tools%2Ftranslate.c;h=fe6408786a3a59793caae9bc7a6d95ea4a4f668e;hb=71d50aa7a431645296bc8624618e02e7f3bf73ac;hp=591090de62a057ce1265f566f67e80da2ba695e4;hpb=93b5bd181600ddf5097d133c52cdc7b1d4a2c7c8;p=ia32rtools.git
diff --git a/tools/translate.c b/tools/translate.c
index 591090d..fe64087 100644
--- a/tools/translate.c
+++ b/tools/translate.c
@@ -4,12 +4,22 @@
*
* This work is licensed under the terms of 3-clause BSD license.
* See COPYING file in the top-level directory.
+ *
+ * recognized asm hint comments:
+ * sctattr - function attributes (see code)
+ * sctend - force end of function/chunk
+ * sctpatch: - replace current asm line with
+ * sctproto:
- prototype of ref'd function or struct
+ * sctref - variable is referenced, make global
+ * sctskip_start - start of skipped code chunk (inclusive)
+ * sctskip_end - end of skipped code chunk (inclusive)
*/
#define _GNU_SOURCE
#include
#include
#include
+#include
#include "my_assert.h"
#include "my_str.h"
@@ -156,6 +166,8 @@ enum op_op {
OPP_ALLSHL,
OPP_ALLSHR,
OPP_FTOL,
+ OPP_CIPOW,
+ OPP_ABORT,
// undefined
OP_UD2,
};
@@ -307,6 +319,7 @@ static int g_stack_clear_len;
static int g_regmask_init;
static int g_skip_func;
static int g_allow_regfunc;
+static int g_allow_user_icall;
static int g_quiet_pp;
static int g_header_mode;
@@ -479,7 +492,7 @@ static int parse_indmode(char *name, int *regmask, int need_c_cvt)
}
if ('0' <= w[0] && w[0] <= '9') {
- number = parse_number(w);
+ number = parse_number(w, 0);
printf_number(d, sizeof(cvtbuf) - (d - cvtbuf), number);
continue;
}
@@ -575,8 +588,9 @@ static const char *parse_stack_el(const char *name, char *extra_reg,
if (len < sizeof(buf) - 1) {
strncpy(buf, s, len);
buf[len] = 0;
+ errno = 0;
val = strtol(buf, &endp, 16);
- if (val == 0 || *endp != 0) {
+ if (val == 0 || *endp != 0 || errno != 0) {
aerr("%s num parse fail for '%s'\n", __func__, buf);
return NULL;
}
@@ -618,6 +632,9 @@ static int guess_lmod_from_name(struct parsed_opr *opr)
static int guess_lmod_from_c_type(enum opr_lenmod *lmod,
const struct parsed_type *c_type)
{
+ static const char *qword_types[] = {
+ "uint64_t", "int64_t", "__int64",
+ };
static const char *dword_types[] = {
"uint32_t", "int", "_DWORD", "UINT_PTR", "DWORD",
"WPARAM", "LPARAM", "UINT", "__int32",
@@ -666,6 +683,13 @@ static int guess_lmod_from_c_type(enum opr_lenmod *lmod,
}
}
+ for (i = 0; i < ARRAY_SIZE(qword_types); i++) {
+ if (IS(n, qword_types[i])) {
+ *lmod = OPLM_QWORD;
+ return 1;
+ }
+ }
+
return 0;
}
@@ -852,7 +876,7 @@ static int parse_operand(struct parsed_opr *opr,
else if (('0' <= words[w][0] && words[w][0] <= '9')
|| words[w][0] == '-')
{
- number = parse_number(words[w]);
+ number = parse_number(words[w], 0);
opr->type = OPT_CONST;
opr->val = number;
printf_number(opr->name, sizeof(opr->name), number);
@@ -1092,6 +1116,7 @@ static const struct {
{ "_allshl",OPP_ALLSHL },
{ "_allshr",OPP_ALLSHR },
{ "_ftol", OPP_FTOL },
+ { "_CIpow", OPP_CIPOW },
// must be last
{ "ud2", OP_UD2 },
};
@@ -1721,16 +1746,15 @@ static struct parsed_equ *equ_find(struct parsed_op *po, const char *name,
*extra_offs = 0;
namelen = strlen(name);
- p = strchr(name, '+');
+ p = strpbrk(name, "+-");
if (p != NULL) {
namelen = p - name;
if (namelen <= 0)
ferr(po, "equ parse failed for '%s'\n", name);
- if (IS_START(p, "0x"))
- p += 2;
+ errno = 0;
*extra_offs = strtol(p, &endp, 16);
- if (*endp != 0)
+ if (*endp != 0 || errno != 0)
ferr(po, "equ parse failed for '%s'\n", name);
}
@@ -1774,10 +1798,11 @@ static void parse_stack_access(struct parsed_op *po,
p = name + 4;
if (IS_START(p, "0x"))
p += 2;
+ errno = 0;
offset = strtoul(p, &endp, 16);
if (name[3] == '-')
offset = -offset;
- if (*endp != 0)
+ if (*endp != 0 || errno != 0)
ferr(po, "ebp- parse of '%s' failed\n", name);
}
else {
@@ -1822,8 +1847,9 @@ static int parse_stack_esp_offset(struct parsed_op *po,
// just plain offset?
if (!IS_START(name, "esp+"))
return -1;
+ errno = 0;
offset = strtol(name + 4, &endp, 0);
- if (endp == NULL || *endp != 0)
+ if (endp == NULL || *endp != 0 || errno != 0)
return -1;
*offset_out = offset;
return 0;
@@ -1853,7 +1879,6 @@ static int stack_frame_access(struct parsed_op *po,
int offset = 0;
int retval = -1;
int sf_ofs;
- int lim;
if (po->flags & OPF_EBP_S)
ferr(po, "stack_frame_access while ebp is scratch\n");
@@ -1984,8 +2009,7 @@ static int stack_frame_access(struct parsed_op *po,
g_stack_frame_used = 1;
sf_ofs = g_stack_fsz + offset;
- lim = (ofs_reg[0] != 0) ? -4 : 0;
- if (offset > 0 || sf_ofs < lim)
+ if (ofs_reg[0] == 0 && (offset > 0 || sf_ofs < 0))
ferr(po, "bp_stack offset %d/%d\n", offset, g_stack_fsz);
if (is_lea)
@@ -2029,9 +2053,11 @@ static int stack_frame_access(struct parsed_op *po,
case OPLM_QWORD:
ferr_assert(po, !(sf_ofs & 7));
ferr_assert(po, ofs_reg[0] == 0);
- // float callers set is_lea
- ferr_assert(po, is_lea);
- snprintf(buf, buf_size, "%ssf.q[%d]", prefix, sf_ofs / 8);
+ // only used for x87 int64/float, float sets is_lea
+ if (is_lea)
+ snprintf(buf, buf_size, "%ssf.q[%d]", prefix, sf_ofs / 8);
+ else
+ snprintf(buf, buf_size, "*(s64 *)&sf.q[%d]", sf_ofs / 8);
break;
default:
@@ -2050,7 +2076,7 @@ static void check_func_pp(struct parsed_op *po,
int ret, i;
if (pp->argc_reg != 0) {
- if (/*!g_allow_regfunc &&*/ !pp->is_fastcall) {
+ if (!g_allow_user_icall && !pp->is_fastcall) {
pp_print(buf, sizeof(buf), pp);
ferr(po, "%s: unexpected reg arg in icall: %s\n", pfx, buf);
}
@@ -2305,7 +2331,7 @@ static char *out_src_opr_float(char *buf, size_t buf_size,
break;
}
out_src_opr(tmp, sizeof(tmp), po, popr, "", 1);
- snprintf(buf, buf_size, "*((%s *)%s)", cast, tmp);
+ snprintf(buf, buf_size, "*(%s *)(%s)", cast, tmp);
break;
default:
@@ -2333,7 +2359,7 @@ static void out_test_for_cc(char *buf, size_t buf_size,
switch (pfo) {
case PFO_Z:
- case PFO_BE: // CF=1||ZF=1; CF=0
+ case PFO_BE: // CF==1||ZF==1; CF=0
snprintf(buf, buf_size, "(%s%s %s 0)",
cast, expr, is_inv ? "!=" : "==");
break;
@@ -2344,11 +2370,16 @@ static void out_test_for_cc(char *buf, size_t buf_size,
scast, expr, is_inv ? ">=" : "<");
break;
- case PFO_LE: // ZF=1||SF!=OF; OF=0
+ case PFO_LE: // ZF==1||SF!=OF; OF=0
snprintf(buf, buf_size, "(%s%s %s 0)",
scast, expr, is_inv ? ">" : "<=");
break;
+ case PFO_C: // CF=0
+ case PFO_O: // OF=0
+ snprintf(buf, buf_size, "(%d)", !!is_inv);
+ break;
+
default:
ferr(po, "%s: unhandled parsed_flag_op: %d\n", __func__, pfo);
}
@@ -2557,10 +2588,10 @@ static int scan_for_pop(int i, int opcnt, int magic, int reg,
if (po->pp != NULL && po->pp->is_noreturn)
seen_noreturn = 1;
else
- return -1;
+ goto out;
}
else
- return -1; // deadend
+ goto out;
}
if (po->flags & (OPF_RMD|OPF_DONE|OPF_FARG))
@@ -2611,6 +2642,7 @@ static int scan_for_pop(int i, int opcnt, int magic, int reg,
}
}
+out:
// for noreturn, assume msvc skipped stack cleanup
return seen_noreturn ? 1 : -1;
}
@@ -2662,8 +2694,9 @@ static int scan_for_rsave_pop_reg(int i, int magic, int reg, int set_flags)
return -1;
}
- // nothing interesting on this path
- return 0;
+ // nothing interesting on this path,
+ // still return ret for something recursive calls could find
+ return ret;
}
static void find_reachable_exits(int i, int opcnt, int magic,
@@ -2714,7 +2747,8 @@ static int scan_for_pop_ret(int i, int opcnt, int reg, int set_flags)
{
static int exits[MAX_EXITS];
static int exit_count;
- int j, ret;
+ int found = 0;
+ int e, j, ret;
if (!set_flags) {
exit_count = 0;
@@ -2724,13 +2758,23 @@ static int scan_for_pop_ret(int i, int opcnt, int reg, int set_flags)
}
for (j = 0; j < exit_count; j++) {
- ret = scan_for_rsave_pop_reg(exits[j], i + opcnt * 16 + set_flags,
+ e = exits[j];
+ ret = scan_for_rsave_pop_reg(e, i + opcnt * 16 + set_flags,
reg, set_flags);
- if (ret == -1)
- return -1;
+ if (ret != -1) {
+ found |= ret;
+ continue;
+ }
+ if (ops[e].op == OP_CALL && ops[e].pp != NULL
+ && ops[e].pp->is_noreturn)
+ {
+ // assume stack cleanup was skipped
+ continue;
+ }
+ return -1;
}
- return 1;
+ return found;
}
// scan for one or more pop of push
@@ -3645,12 +3689,14 @@ static void resolve_branches_parse_calls(int opcnt)
{ "__allshl", OPP_ALLSHL, OPF_DATA, mxAX|mxDX|mxCX, mxAX|mxDX },
{ "__allshr", OPP_ALLSHR, OPF_DATA, mxAX|mxDX|mxCX, mxAX|mxDX },
{ "__ftol", OPP_FTOL, OPF_FPOP, mxST0, mxAX | mxDX },
+ { "__CIpow", OPP_CIPOW, OPF_FPOP, mxST0|mxST1, mxST0 },
};
const struct parsed_proto *pp_c;
struct parsed_proto *pp;
struct parsed_data *pd;
struct parsed_op *po;
const char *tmpname;
+ enum op_op prev_op;
int i, l;
int ret;
@@ -3714,8 +3760,10 @@ static void resolve_branches_parse_calls(int opcnt)
if (pp != NULL) {
if (pp->is_fptr)
check_func_pp(po, pp, "fptr var call");
- if (pp->is_noreturn)
+ if (pp->is_noreturn) {
po->flags |= OPF_TAIL;
+ po->flags &= ~OPF_ATAIL; // most likely...
+ }
}
po->pp = pp;
continue;
@@ -3760,8 +3808,14 @@ static void resolve_branches_parse_calls(int opcnt)
tailcall:
po->op = OP_CALL;
po->flags |= OPF_TAIL;
- if (i > 0 && ops[i - 1].op == OP_POP)
+ prev_op = i > 0 ? ops[i - 1].op : OP_UD2;
+ if (prev_op == OP_POP)
po->flags |= OPF_ATAIL;
+ if (g_stack_fsz + g_bp_frame == 0 && prev_op != OP_PUSH
+ && (g_func_pp == NULL || g_func_pp->argc_stack > 0))
+ {
+ po->flags |= OPF_ATAIL;
+ }
i--; // reprocess
}
}
@@ -3989,13 +4043,22 @@ static void scan_prologue_epilogue(int opcnt)
l += ops[j].operand[1].val / 4 - 1;
}
else
- ferr(&ops[j], "'pop ecx' expected\n");
+ break;
ops[j].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS;
j--;
}
- if (l != ecx_push)
+ if (l != ecx_push) {
+ if (i < opcnt && ops[i].op == OP_CALL
+ && ops[i].pp != NULL && ops[i].pp->is_noreturn)
+ {
+ // noreturn tailcall with no epilogue
+ i++;
+ found = 1;
+ continue;
+ }
ferr(&ops[j], "epilogue scan failed\n");
+ }
found = 1;
}
@@ -4003,21 +4066,25 @@ static void scan_prologue_epilogue(int opcnt)
if (esp_sub) {
if (ops[j].op != OP_ADD
|| !IS(opr_name(&ops[j], 0), "esp")
- || ops[j].operand[1].type != OPT_CONST
- || ops[j].operand[1].val != g_stack_fsz)
+ || ops[j].operand[1].type != OPT_CONST)
{
- if (ops[i].op == OP_CALL && ops[i].pp != NULL
- && ops[i].pp->is_noreturn)
+ if (i < opcnt && ops[i].op == OP_CALL
+ && ops[i].pp != NULL && ops[i].pp->is_noreturn)
{
// noreturn tailcall with no epilogue
i++;
+ found = 1;
continue;
}
ferr(&ops[j], "'add esp' expected\n");
}
- ops[j].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS;
- ops[j].operand[1].val = 0; // hack for stack arg scanner
+ if (ops[j].operand[1].val < g_stack_fsz)
+ ferr(&ops[j], "esp adj is too low (need %d)\n", g_stack_fsz);
+
+ ops[j].operand[1].val -= g_stack_fsz; // for stack arg scanner
+ if (ops[j].operand[1].val == 0)
+ ops[j].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS;
found = 1;
}
@@ -4609,6 +4676,9 @@ static struct parsed_proto *process_call(int i, int opcnt)
ferr(po, "too many args for '%s'\n", tmpname);
}
if (pp->argc_stack > adj / 4) {
+ if (pp->is_noreturn)
+ // assume no stack adjust was emited
+ goto out;
fnote(po, "(this call)\n");
ferr(&ops[ret], "stack tracking failed for '%s': %x %x\n",
tmpname, pp->argc_stack * 4, adj);
@@ -4621,6 +4691,7 @@ static struct parsed_proto *process_call(int i, int opcnt)
ferr(po, "missing esp_adjust for vararg func '%s'\n",
pp->name);
+out:
return pp;
}
@@ -4651,8 +4722,10 @@ static int collect_call_args_no_push(int i, struct parsed_proto *pp,
ret = parse_stack_esp_offset(po, po->operand[0].name, &offset);
if (ret != 0)
continue;
- if (offset < 0 || offset >= pp->argc_stack * 4 || (offset & 3))
- ferr(po, "bad offset %d (%d args)\n", offset, pp->argc_stack);
+ if (offset < 0 || offset >= pp->argc_stack * 4 || (offset & 3)) {
+ //ferr(po, "offset %d, %d args\n", offset, pp->argc_stack);
+ continue;
+ }
arg = base_arg + offset / 4;
po->p_argnext = -1;
@@ -4774,9 +4847,31 @@ static int collect_call_args_early(int i, struct parsed_proto *pp,
return 0;
}
+static int sync_argnum(struct parsed_op *po, int argnum)
+{
+ struct parsed_op *po_tmp;
+
+ // see if other branches don't have higher argnum
+ for (po_tmp = po; po_tmp != NULL; ) {
+ if (argnum < po_tmp->p_argnum)
+ argnum = po_tmp->p_argnum;
+ // note: p_argnext is active on current collect_call_args only
+ po_tmp = po_tmp->p_argnext >= 0 ? &ops[po_tmp->p_argnext] : NULL;
+ }
+
+ // make all argnums consistent
+ for (po_tmp = po; po_tmp != NULL; ) {
+ if (po_tmp->p_argnum != 0)
+ po_tmp->p_argnum = argnum;
+ po_tmp = po_tmp->p_argnext >= 0 ? &ops[po_tmp->p_argnext] : NULL;
+ }
+
+ return argnum;
+}
+
static int collect_call_args_r(struct parsed_op *po, int i,
- struct parsed_proto *pp, int *regmask, int *save_arg_vars,
- int *arg_grp, int arg, int magic, int need_op_saving, int may_reuse)
+ struct parsed_proto *pp, int *regmask, int *arg_grp,
+ int arg, int argnum, int magic, int need_op_saving, int may_reuse)
{
struct parsed_proto *pp_tmp;
struct parsed_op *po_tmp;
@@ -4784,7 +4879,6 @@ static int collect_call_args_r(struct parsed_op *po, int i,
int need_to_save_current;
int arg_grp_current = 0;
int save_args_seen = 0;
- int save_args;
int ret = 0;
int reg;
char buf[32];
@@ -4795,7 +4889,7 @@ static int collect_call_args_r(struct parsed_op *po, int i,
return -1;
}
- for (; arg < pp->argc; arg++)
+ for (; arg < pp->argc; arg++, argnum++)
if (pp->arg[arg].reg == NULL)
break;
magic = (magic & 0xffffff) | (arg << 24);
@@ -4821,8 +4915,8 @@ static int collect_call_args_r(struct parsed_op *po, int i,
check_i(&ops[j], lr->i);
if ((ops[lr->i].flags & (OPF_JMP|OPF_CJMP)) != OPF_JMP)
may_reuse = 1;
- ret = collect_call_args_r(po, lr->i, pp, regmask, save_arg_vars,
- arg_grp, arg, magic, need_op_saving, may_reuse);
+ ret = collect_call_args_r(po, lr->i, pp, regmask, arg_grp,
+ arg, argnum, magic, need_op_saving, may_reuse);
if (ret < 0)
return ret;
}
@@ -4836,8 +4930,8 @@ static int collect_call_args_r(struct parsed_op *po, int i,
continue;
}
need_op_saving = 1;
- ret = collect_call_args_r(po, lr->i, pp, regmask, save_arg_vars,
- arg_grp, arg, magic, need_op_saving, may_reuse);
+ ret = collect_call_args_r(po, lr->i, pp, regmask, arg_grp,
+ arg, argnum, magic, need_op_saving, may_reuse);
if (ret < 0)
return ret;
}
@@ -4850,8 +4944,8 @@ static int collect_call_args_r(struct parsed_op *po, int i,
pp_tmp = ops[j].pp;
if (pp_tmp == NULL)
- ferr(po, "arg collect hit unparsed call '%s'\n",
- ops[j].operand[0].name);
+ ferr(po, "arg collect %d/%d hit unparsed call '%s'\n",
+ arg, pp->argc, ops[j].operand[0].name);
if (may_reuse && pp_tmp->argc_stack > 0)
ferr(po, "arg collect %d/%d hit '%s' with %d stack args\n",
arg, pp->argc, opr_name(&ops[j], 0), pp_tmp->argc_stack);
@@ -4895,8 +4989,9 @@ static int collect_call_args_r(struct parsed_op *po, int i,
ops[j].p_argnext = po_tmp - ops;
pp->arg[arg].datap = &ops[j];
+ argnum = sync_argnum(&ops[j], argnum);
+
need_to_save_current = 0;
- save_args = 0;
reg = -1;
if (ops[j].operand[0].type == OPT_REG)
reg = ops[j].operand[0].reg;
@@ -4906,25 +5001,15 @@ static int collect_call_args_r(struct parsed_op *po, int i,
need_to_save_current = (ret >= 0);
}
if (need_op_saving || need_to_save_current) {
- // mark this push as one that needs operand saving
- ops[j].flags &= ~OPF_RMD;
- if (ops[j].p_argnum == 0) {
- ops[j].p_argnum = arg + 1;
- save_args |= 1 << arg;
- }
- else if (ops[j].p_argnum < arg + 1) {
- // XXX: might kill valid var..
- //*save_arg_vars &= ~(1 << (ops[j].p_argnum - 1));
- ops[j].p_argnum = arg + 1;
- save_args |= 1 << arg;
- }
+ // mark this arg as one that needs operand saving
+ pp->arg[arg].is_saved = 1;
- if (save_args_seen & (1 << (ops[j].p_argnum - 1))) {
+ if (save_args_seen & (1 << (argnum - 1))) {
save_args_seen = 0;
arg_grp_current++;
if (arg_grp_current >= MAX_ARG_GRP)
ferr(&ops[j], "out of arg groups (arg%d), f %s\n",
- ops[j].p_argnum, pp->name);
+ argnum, pp->name);
}
}
else if (ops[j].p_argnum == 0)
@@ -4960,7 +5045,7 @@ static int collect_call_args_r(struct parsed_op *po, int i,
{
ops[k].flags |= OPF_RMD | OPF_NOREGS | OPF_DONE;
ops[j].flags |= OPF_RMD | OPF_NOREGS | OPF_VAPUSH;
- save_args &= ~(1 << arg);
+ pp->arg[arg].is_saved = 0;
reg = -1;
}
else
@@ -4976,23 +5061,27 @@ static int collect_call_args_r(struct parsed_op *po, int i,
ops[k].flags |= OPF_RMD | OPF_DONE;
ops[j].flags |= OPF_RMD;
ops[j].p_argpass = ret + 1;
- save_args &= ~(1 << arg);
+ pp->arg[arg].is_saved = 0;
reg = -1;
}
}
}
}
- *save_arg_vars |= save_args;
+ if (pp->arg[arg].is_saved) {
+ ops[j].flags &= ~OPF_RMD;
+ ops[j].p_argnum = argnum;
+ }
// tracking reg usage
if (reg >= 0)
*regmask |= 1 << reg;
arg++;
+ argnum++;
if (!pp->is_unresolved) {
// next arg
- for (; arg < pp->argc; arg++)
+ for (; arg < pp->argc; arg++, argnum++)
if (pp->arg[arg].reg == NULL)
break;
}
@@ -5020,19 +5109,17 @@ static int collect_call_args_r(struct parsed_op *po, int i,
}
static int collect_call_args(struct parsed_op *po, int i,
- struct parsed_proto *pp, int *regmask, int *save_arg_vars,
- int magic)
+ struct parsed_proto *pp, int *regmask, int magic)
{
// arg group is for cases when pushes for
// multiple funcs are going on
struct parsed_op *po_tmp;
- int save_arg_vars_current = 0;
int arg_grp = 0;
int ret;
int a;
- ret = collect_call_args_r(po, i, pp, regmask,
- &save_arg_vars_current, &arg_grp, 0, magic, 0, 0);
+ ret = collect_call_args_r(po, i, pp, regmask, &arg_grp,
+ 0, 1, magic, 0, 0);
if (ret < 0)
return ret;
@@ -5045,14 +5132,10 @@ static int collect_call_args(struct parsed_op *po, int i,
po_tmp = pp->arg[a].datap;
while (po_tmp != NULL) {
po_tmp->p_arggrp = arg_grp;
- if (po_tmp->p_argnext > 0)
- po_tmp = &ops[po_tmp->p_argnext];
- else
- po_tmp = NULL;
+ po_tmp = po_tmp->p_argnext >= 0 ? &ops[po_tmp->p_argnext] : NULL;
}
}
}
- save_arg_vars[arg_grp] |= save_arg_vars_current;
if (pp->is_unresolved) {
pp->argc += ret;
@@ -5499,8 +5582,7 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
if (!pp->is_unresolved && !(po->flags & OPF_ATAIL)) {
// since we know the args, collect them
- collect_call_args(po, i, pp, ®mask, save_arg_vars,
- i + opcnt * 2);
+ collect_call_args(po, i, pp, ®mask, i + opcnt * 2);
}
// for unresolved, collect after other passes
}
@@ -5566,6 +5648,8 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
reg_use_pass(0, opcnt, cbits, regmask_init, ®mask,
0, ®mask_save, ®mask_init, regmask_arg);
+ need_float_stack = !!(regmask & mxST7_2);
+
// pass7:
// - find flag set ops for their users
// - do unresolved calls
@@ -5658,19 +5742,18 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
if (pp->is_unresolved) {
int regmask_stack = 0;
- collect_call_args(po, i, pp, ®mask, save_arg_vars,
- i + opcnt * 2);
+ collect_call_args(po, i, pp, ®mask, i + opcnt * 2);
// this is pretty rough guess:
// see ecx and edx were pushed (and not their saved versions)
for (arg = 0; arg < pp->argc; arg++) {
- if (pp->arg[arg].reg != NULL)
+ if (pp->arg[arg].reg != NULL && !pp->arg[arg].is_saved)
continue;
tmp_op = pp->arg[arg].datap;
if (tmp_op == NULL)
ferr(po, "parsed_op missing for arg%d\n", arg);
- if (tmp_op->p_argnum == 0 && tmp_op->operand[0].type == OPT_REG)
+ if (tmp_op->operand[0].type == OPT_REG)
regmask_stack |= 1 << tmp_op->operand[0].reg;
}
@@ -5770,10 +5853,17 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
default:
break;
}
+
+ // this might need it's own pass...
+ if (po->op != OP_FST && po->p_argnum > 0)
+ save_arg_vars[po->p_arggrp] |= 1 << (po->p_argnum - 1);
+
+ // correct for "full stack" mode late enable
+ if ((po->flags & (OPF_PPUSH|OPF_FPOP)) && need_float_stack)
+ po->flags |= OPF_FSHIFT;
}
float_type = need_double ? "double" : "float";
- need_float_stack = !!(regmask & mxST7_2);
float_st0 = need_float_stack ? "f_st[f_stp & 7]" : "f_st0";
float_st1 = need_float_stack ? "f_st[(f_stp + 1) & 7]" : "f_st1";
@@ -6660,10 +6750,11 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
lmod_cast_s(po, po->operand[0].lmod), buf2);
last_arith_dst = &po->operand[0];
delayed_flag_op = NULL;
- if (pfomask & (1 << PFO_C)) {
+ if (pfomask & PFOB_C) {
fprintf(fout, "\n cond_c = (%s != 0);", buf1);
- pfomask &= ~(1 << PFO_C);
+ pfomask &= ~PFOB_C;
}
+ output_std_flags(fout, po, &pfomask, buf1);
break;
case OP_IMUL:
@@ -6869,10 +6960,13 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
pp->has_structarg ? "_sa" : "");
if (po->flags & OPF_ATAIL) {
- if (pp->argc_stack != g_func_pp->argc_stack
- || (pp->argc_stack > 0
- && pp->is_stdcall != g_func_pp->is_stdcall))
- ferr(po, "incompatible tailcall\n");
+ int check_compat =
+ g_func_pp->is_stdcall && g_func_pp->argc_stack > 0;
+ check_compat |= pp->argc_stack > 0;
+ if (check_compat
+ && (pp->argc_stack != g_func_pp->argc_stack
+ || pp->is_stdcall != g_func_pp->is_stdcall))
+ ferr(po, "incompatible arg-reuse tailcall\n");
if (g_func_pp->has_retreg)
ferr(po, "TODO: retreg+tailcall\n");
@@ -6910,6 +7004,13 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
if (pp->arg[arg].reg != NULL) {
if (pp->arg[arg].type.is_retreg)
fprintf(fout, "&%s", pp->arg[arg].reg);
+ else if (IS(pp->arg[arg].reg, "ebp")
+ && g_bp_frame && !(po->flags & OPF_EBP_S))
+ {
+ // rare special case
+ fprintf(fout, "%s(u32)&sf.b[sizeof(sf)]", cast);
+ strcat(g_comment, " bp_ref");
+ }
else
fprintf(fout, "%s%s", cast, pp->arg[arg].reg);
continue;
@@ -6931,7 +7032,8 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
else if (tmp_op->p_argpass != 0) {
fprintf(fout, "a%d", tmp_op->p_argpass);
}
- else if (tmp_op->p_argnum != 0) {
+ else if (pp->arg[arg].is_saved) {
+ ferr_assert(po, tmp_op->p_argnum > 0);
fprintf(fout, "%s%s", cast,
saved_arg_name(buf1, sizeof(buf1),
tmp_op->p_arggrp, tmp_op->p_argnum));
@@ -7090,7 +7192,7 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
case OPP_ALLSHL:
case OPP_ALLSHR:
fprintf(fout, " tmp64 = ((u64)edx << 32) | eax;\n");
- fprintf(fout, " tmp64 = (s64)tmp64 %s= LOBYTE(ecx);\n",
+ fprintf(fout, " tmp64 = (s64)tmp64 %s LOBYTE(ecx);\n",
po->op == OPP_ALLSHL ? "<<" : ">>");
fprintf(fout, " edx = tmp64 >> 32; eax = tmp64;");
strcat(g_comment, po->op == OPP_ALLSHL
@@ -7363,6 +7465,7 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
fprintf(fout, " f_st0 = f_st1 * log2%s(f_st0);",
need_double ? "" : "f");
}
+ strcat(g_comment, " fyl2x");
break;
case OP_FSIN:
@@ -7401,9 +7504,26 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt)
strcat(g_comment, " ftol");
break;
+ case OPP_CIPOW:
+ if (need_float_stack) {
+ fprintf(fout, " %s = pow%s(%s, %s);", float_st1,
+ need_double ? "" : "f", float_st1, float_st0);
+ fprintf(fout, " f_stp++;");
+ }
+ else {
+ fprintf(fout, " f_st0 = pow%s(f_st1, f_st0);",
+ need_double ? "" : "f");
+ }
+ strcat(g_comment, " CIpow");
+ break;
+
+ case OPP_ABORT:
+ fprintf(fout, " do_skip_code_abort();");
+ break;
+
// mmx
case OP_EMMS:
- strcpy(g_comment, " (emms)");
+ fprintf(fout, " do_emms();");
break;
default:
@@ -7677,8 +7797,11 @@ static void gen_hdr_dep_pass(int i, int opcnt, unsigned char *cbits,
po->regmask_dst |= 1 << xAX;
dep = hg_fp_find_dep(fp, po->operand[0].name);
- if (dep != NULL)
+ if (dep != NULL) {
dep->regmask_live = regmask_save | regmask_dst;
+ if (g_bp_frame && !(po->flags & OPF_EBP_S))
+ dep->regmask_live |= 1 << xBP;
+ }
}
else if (po->op == OP_RET) {
if (po->operand_cnt > 0) {
@@ -7741,7 +7864,6 @@ static void gen_hdr_dep_pass(int i, int opcnt, unsigned char *cbits,
static void gen_hdr(const char *funcn, int opcnt)
{
- int save_arg_vars[MAX_ARG_GRP] = { 0, };
unsigned char cbits[MAX_OPS / 8];
const struct parsed_proto *pp_c;
struct parsed_proto *pp;
@@ -7872,8 +7994,8 @@ static void gen_hdr(const char *funcn, int opcnt)
if (!pp->is_unresolved && !(po->flags & OPF_ATAIL)) {
// since we know the args, collect them
- ret = collect_call_args(po, i, pp, ®mask_dummy, save_arg_vars,
- i + opcnt * 1);
+ ret = collect_call_args(po, i, pp, ®mask_dummy,
+ i + opcnt * 1);
}
}
}
@@ -7898,7 +8020,7 @@ static void gen_hdr(const char *funcn, int opcnt)
// noreturn OS functions
break;
}
- if (ops[i].op != OP_NOP)
+ if (ops[i].op != OP_NOP && ops[i].op != OPP_ABORT)
ferr(&ops[i], "unreachable code\n");
}
@@ -8226,10 +8348,14 @@ static int ida_xrefs_show_need(FILE *fasm, char *p,
long pos;
p = strrchr(p, ';');
- if (p != NULL && *p == ';' && IS_START(p + 2, "DATA XREF: ")) {
- p += 13;
- if (is_xref_needed(p, rlist, rlist_len))
+ if (p != NULL && *p == ';') {
+ if (IS_START(p + 2, "sctref"))
return 1;
+ if (IS_START(p + 2, "DATA XREF: ")) {
+ p += 13;
+ if (is_xref_needed(p, rlist, rlist_len))
+ return 1;
+ }
}
pos = ftell(fasm);
@@ -8248,6 +8374,12 @@ static int ida_xrefs_show_need(FILE *fasm, char *p,
p = strrchr(p, ';');
p += 2;
+
+ if (IS_START(p, "sctref")) {
+ found_need = 1;
+ break;
+ }
+
// it's printed once, but no harm to check again
if (IS_START(p, "DATA XREF: "))
p += 11;
@@ -8441,7 +8573,7 @@ static int cmp_chunks(const void *p1, const void *p2)
return strcmp(c1->name, c2->name);
}
-static void scan_ahead(FILE *fasm)
+static void scan_ahead_for_chunks(FILE *fasm)
{
char words[2][256];
char line[256];
@@ -8522,7 +8654,8 @@ int main(int argc, char *argv[])
char *sctproto = NULL;
int in_func = 0;
int pending_endp = 0;
- int skip_func = 0;
+ int skip_code = 0;
+ int skip_code_end = 0;
int skip_warned = 0;
int eq_alloc;
int verbose = 0;
@@ -8541,6 +8674,8 @@ int main(int argc, char *argv[])
verbose = 1;
else if (IS(argv[arg], "-rf"))
g_allow_regfunc = 1;
+ else if (IS(argv[arg], "-uc"))
+ g_allow_user_icall = 1;
else if (IS(argv[arg], "-m"))
multi_seg = 1;
else if (IS(argv[arg], "-hdr"))
@@ -8555,6 +8690,7 @@ int main(int argc, char *argv[])
"options:\n"
" -hdr - header generation mode\n"
" -rf - allow unannotated indirect calls\n"
+ " -uc - allow ind. calls/refs to __usercall\n"
" -m - allow multiple .text sections\n"
"[rlist] is a file with function names to skip,"
" one per line\n",
@@ -8585,6 +8721,8 @@ int main(int argc, char *argv[])
memset(words, 0, sizeof(words));
for (; arg < argc; arg++) {
+ int skip_func = 0;
+
frlist = fopen(argv[arg], "r");
my_assert_not(frlist, NULL);
@@ -8616,7 +8754,6 @@ int main(int argc, char *argv[])
}
rlist[rlist_len++] = strdup(words[0]);
}
- skip_func = 0;
fclose(frlist);
frlist = NULL;
@@ -8777,7 +8914,7 @@ int main(int argc, char *argv[])
if (addr > f_addr && !scanned_ahead) {
//anote("scan_ahead caused by '%s', addr %lx\n",
// g_func, addr);
- scan_ahead(fasm);
+ scan_ahead_for_chunks(fasm);
scanned_ahead = 1;
func_chunks_sorted = 0;
}
@@ -8799,7 +8936,12 @@ parse_words:
if (*p != 0 && *p != ';')
aerr("too many words\n");
- // alow asm patches in comments
+ if (skip_code_end) {
+ skip_code_end = 0;
+ skip_code = 0;
+ }
+
+ // allow asm patches in comments
if (*p == ';') {
if (IS_START(p, "; sctpatch:")) {
p = sskip(p + 11);
@@ -8815,6 +8957,20 @@ parse_words:
if (!pending_endp)
break;
}
+ else if (IS_START(p, "; sctskip_start")) {
+ if (in_func && !g_skip_func) {
+ if (!skip_code) {
+ ops[pi].op = OPP_ABORT;
+ ops[pi].asmln = asmln;
+ pi++;
+ }
+ skip_code = 1;
+ }
+ }
+ else if (IS_START(p, "; sctskip_end")) {
+ if (skip_code)
+ skip_code_end = 1;
+ }
}
if (wordc == 0) {
@@ -8883,7 +9039,7 @@ do_pending_endp:
if (pd->type == OPT_OFFSET)
pd->d[pd->count].u.label = strdup(words[i]);
else
- pd->d[pd->count].u.val = parse_number(words[i]);
+ pd->d[pd->count].u.val = parse_number(words[i], 0);
pd->d[pd->count].bt_i = -1;
pd->count++;
}
@@ -8954,6 +9110,8 @@ do_pending_endp:
if (!IS(g_func, words[0]))
aerr("endp '%s' while in_func '%s'?\n",
words[0], g_func);
+ if (skip_code)
+ aerr("endp '%s' while skipping code\n", words[0]);
if ((g_ida_func_attr & IDAFA_THUNK) && pi == 1
&& ops[0].op == OP_JMP && ops[0].operand[0].had_ds)
@@ -9021,7 +9179,7 @@ do_pending_endp:
continue;
}
- if (!in_func || g_skip_func) {
+ if (!in_func || g_skip_func || skip_code) {
if (!skip_warned && !g_skip_func && g_labels[pi] != NULL) {
if (verbose)
anote("skipping from '%s'\n", g_labels[pi]);
@@ -9060,7 +9218,7 @@ do_pending_endp:
else
aerr("bad lmod: '%s'\n", words[2]);
- g_eqs[g_eqcnt].offset = parse_number(words[4]);
+ g_eqs[g_eqcnt].offset = parse_number(words[4], 0);
g_eqcnt++;
continue;
}