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Cursor indicator + HB-ON/HB-OFF runtime DoE instrumentation toggle

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Cursor (Captain Bob: "the only thing we need is a cursor"):
vt100_draw_cursor() draws a solid block at the terminal's current
position, called from repl.c after the prompt prints and after every
keystroke/backspace. vt100_erase_cursor() cleans up the one gap a static
cursor has -- Enter/newline moves away from the cursor cell without a
character draw ever overwriting it, which left a stray block behind
until this fix.

HB-ON/HB-OFF (Captain Bob: run a program with or without instrumentation
without rebuilding):
Converted per-tick DoE logging from a build-time flag (HEARTBEAT_DOE_LOG)
to a runtime one. doe_log_tick_row() now self-gates on g_doe_log_enabled
(default 1, matching the old default) instead of being compiled out
entirely; the call site in vm_runtime.c is unconditional. Two new FORTH
words, HB-ON and HB-OFF, flip the flag live. Removed the now-dead
HEARTBEAT_DOE_LOG plumbing: the Kconfig symbol, and the -D forwarding in
both LOADER_CFLAGS and KERNEL_CFLAGS.

Verified: three-arch clean QEMU boot + logs; dictionary word count 466
(463 baseline + ALT+TAB + HB-ON + HB-OFF, exactly the three words added
across this session); amd64 screendump confirms the cursor renders
correctly after real interactive typing.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Robert Allan James
2026-08-12 16:22:09 -04:00
co-authored by Claude Sonnet 5
parent af20efaa15
commit 59458a0a16
26 changed files with 51642 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/starkernel/doe_log.c
+25
View File
@@ -57,6 +57,9 @@
#include "starkernel/capsule_birth.h"
#include "starkernel/capsule_vm_physics.h"
#include "freestanding/stdio.h"
#include "word_registry.h"
int g_doe_log_enabled = 1;
#define DOE_PREFIX "\x1b[36m[HADES][DOE ]\x1b[0m "
#define DOE_BUF_SIZE 512
@@ -81,6 +84,8 @@ static uint64_t doe_log_heat_by_name(const char *name)
void doe_log_tick_row(VM *vm, const HeartbeatTickSnapshot *snap)
{
if (!g_doe_log_enabled)
return;
if (!snap)
return;
@@ -141,3 +146,23 @@ void doe_log_tick_row(VM *vm, const HeartbeatTickSnapshot *snap)
console_puts(buf);
console_puts("\r\n");
}
/* HB-ON ( -- ): enable per-tick DoE instrumentation (g_doe_log_enabled=1). */
static void doe_word_hb_on(VM *vm)
{
(void)vm;
g_doe_log_enabled = 1;
}
/* HB-OFF ( -- ): disable per-tick DoE instrumentation (g_doe_log_enabled=0). */
static void doe_word_hb_off(VM *vm)
{
(void)vm;
g_doe_log_enabled = 0;
}
void register_doe_log_words(VM *vm)
{
register_word(vm, "HB-ON", doe_word_hb_on);
register_word(vm, "HB-OFF", doe_word_hb_off);
}