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SCP: Leverage a memory file while producing examine output

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This commit is contained in:
Mark Pizzolato
2023-12-06 09:49:05 -10:00
parent 6d11ae4e6d
commit 197ff62587
1 changed files with 8 additions and 12 deletions
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scp.c
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@@ -2929,23 +2929,19 @@ free (*tmpname);
static t_stat sim_snprint_sym (char *buf, size_t bufsize, t_bool vm_flag, t_addr addr, t_value *val, UNIT *uptr, int32 sw, int32 dfltinc, int32 rdx, uint32 width, uint32 fmt)
{
t_stat reason;
size_t str_width;
size_t s;
MEMFILE mbuf;
rewind (sim_tmpfile);
memset (&mbuf, 0, sizeof (mbuf));
mbuf.buf = malloc (512); /* Pre allocate a memory buffer to avoid */
mbuf.size = 512; /* potential double vsnprintf to expand the buffer */
sim_mfile = &mbuf;
if (vm_flag || ((reason = fprint_sym (sim_tmpfile, addr, val, uptr, sw)) > 0)) {
fprint_val (sim_tmpfile, val[0], rdx, width, fmt);
reason = dfltinc;
}
str_width = (size_t)ftell(sim_tmpfile);
if (str_width > width)
str_width = width;
if (bufsize > str_width)
memset (buf + str_width, 0, bufsize - width);
rewind (sim_tmpfile);
s = fread (buf, 1, str_width, sim_tmpfile);
if (s < bufsize)
buf[s] = '\0';
sim_mfile = NULL;
strlcpy (buf, mbuf.buf, MIN(bufsize, mbuf.pos + 1));
free (mbuf.buf);
return reason;
}