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add settings snytax.

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0>setting
1>setting

where "setting" is:
brk - enable/disable GS+ brk support
cop - enable/disable GS+ cop support
e/m/x - set psr for disassembly support.
This commit is contained in:
Kelvin Sherlock 2019-03-20 00:16:20 -04:00
parent 96ecfb3b0d
commit fb2dee9b9b
1 changed files with 44 additions and 2 deletions
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46
src/debug_shell.re2c
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@ -899,6 +899,45 @@ next:
return 0;
}
static int do_setting(const char *cp, int value) {
const char *YYCURSOR = cp;
const char *YYMARKER = NULL;
const char *YYCTXMARKER = NULL;
unsigned psr_bits = 0;
/*!re2c
* {
fputs("invalid setting\n", stderr);
return -1;
}
"brk" eol {
engine.flags &= ~FLAG_WANT_BRK;
if (value) engine.flags |= FLAG_WANT_BRK;
printf("brk intercept %s\n", value ? "on" : "off");
return 0;
}
"cop" eol {
engine.flags &= ~FLAG_WANT_COP;
if (value) engine.flags |= FLAG_WANT_COP;
printf("cop intercept %s\n", value ? "on" : "off");
return 0;
}
"e" eol { psr_bits = 0x0100; goto set_psr; }
"m" eol { psr_bits = 0x0020; goto set_psr; }
"x" eol { psr_bits = 0x0010; goto set_psr; }
*/
set_psr:
if (value) g_disasm_psr |= psr_bits;
else g_disasm_psr &= ~psr_bits;
if (g_disasm_psr & 0x0100) g_disasm_psr = 0x0130;
printf("disasm psr %03x\n", g_disasm_psr);
return 0;
}
#if 0
static int do_brk_cop(const char *cp, int which) {
/* brk=1 / brk=0 */
@ -928,6 +967,8 @@ next:
}
return 0;
}
#endif
static word32 do_mem_assign(word32 addr, const char *cp) {
/* "string" -> pokes ASCII chars */
@ -1166,8 +1207,9 @@ static int parse_command(const char *cp) {
("q" | "quit" | "exit" | "bye") eol { return 'q'; }
"reset" eol { do_reset(); return 0; }
("help" | "?") eol { do_help(); return 0; }
"brk=" { return do_brk_cop(YYCURSOR, 0x00); }
"cop=" { return do_brk_cop(YYCURSOR, 0x02); }
"0>" { return do_setting(YYCURSOR, 0); }
"1>" { return do_setting(YYCURSOR, 1); }
// register stuff