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[kernel] Improve debugcon & panic display

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Several minor changes related to debug output.

- Colorize the debugcon logger like the userspace one.
- Display the process and thread for each cpu in the panic display
- Skip the panic() frame in panic back traces
- Don't try to follow obviously bad (non-canonical) stack frame pointers
This commit is contained in:
Justin C. Miller
2023-02-14 20:18:56 -08:00
parent 847ef1ccfe
commit bce01591f3
4 changed files with 35 additions and 17 deletions
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17
src/kernel/debugcon.cpp
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@@ -7,6 +7,7 @@
namespace debugcon {
namespace {
static const uint8_t level_colors[] = {0x00, 0x09, 0x01, 0x0b, 0x0f, 0x07, 0x08};
const char *level_names[] = {"", "fatal", "error", "warn", "info", "verbose", "spam"};
const char *area_names[] = {
#define LOG(name, lvl) #name ,
@@ -19,9 +20,9 @@ namespace {
asm ( "rep outsb;" :: "c"(size), "d"(port), "S"(msg) );
}
inline void debug_newline() {
static const char *newline = "\r\n";
asm ( "rep outsb;" :: "c"(2), "d"(port), "S"(newline) );
inline void debug_endline() {
static const char *newline = "\e[38;5;0m\r\n";
asm ( "rep outsb;" :: "c"(11), "d"(port), "S"(newline) );
}
} // anon namespace
@@ -29,12 +30,16 @@ void
output(j6_log_entry *entry)
{
char buffer [256];
size_t dlen = util::format({buffer, sizeof(buffer)}, "%7s %7s| ",
area_names[entry->area], level_names[entry->severity]);
size_t dlen = util::format({buffer, sizeof(buffer)}, "\e[38;5;%dm%7s %7s\e[38;5;14m|\e[38;5;%dm ",
level_colors[entry->severity],
area_names[entry->area],
level_names[entry->severity],
level_colors[entry->severity]);
debug_out(buffer, dlen);
debug_out(entry->message, entry->bytes - sizeof(j6_log_entry));
debug_newline();
debug_endline();
}
void