Merge branch 'lab1' into lab2

This commit is contained in:
Danila Fedorin 2019-04-18 23:49:39 -07:00
commit d7a96eb60f
9 changed files with 126 additions and 12 deletions

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@ -17,6 +17,7 @@ KERN_SRCFILES := kern/entry.S \
kern/entrypgdir.c \
kern/init.c \
kern/console.c \
kern/ansi.c \
kern/monitor.c \
kern/pmap.c \
kern/env.c \

49
kern/ansi.c Normal file
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@ -0,0 +1,49 @@
#include <kern/ansi.h>
uint8_t vga_colors[8] = {
[0] = 0,
[1] = 4,
[2] = 2,
[3] = 6,
[4] = 1,
[5] = 5,
[6] = 3,
[7] = 7
};
void
ansi_step(void (*putcf)(int), int c, struct AttrState* s) {
switch(s->state) {
case NORMAL:
if(c != 27) putcf(c | (s->cattrs << 8));
else s->state = ESC;
return;
case ESC:
s->state = (c == '[') ? BRACKET : NORMAL;
return;
case BRACKET:
if(c == '3') {
s->state = COLOR_FG;
} else if(c == '0') {
s->state = COLOR;
s->attrs = 0;
} else {
s->state = NORMAL;
}
return;
case COLOR_FG:
if(c >= '0' && c <= '9') {
s->attrs = (s->attrs & ~(0x07)) | vga_colors[c - '0'];
c |= ((c - '0') << 8);
s->state = COLOR;
} else {
s->state = NORMAL;
}
return;
case COLOR:
s->state = (c == ';') ? BRACKET : NORMAL;
if(c == 'm') s->cattrs = s->attrs;
return;
}
}

20
kern/ansi.h Normal file
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@ -0,0 +1,20 @@
#ifndef _ANSI_H_
#define _ANSI_H_
#include <inc/types.h>
struct AttrState {
uint8_t cattrs;
uint8_t attrs;
enum {
NORMAL,
ESC,
BRACKET,
COLOR_FG,
COLOR
} state;
};
void ansi_step(void (*putcf)(int), int c, struct AttrState* s);
#endif

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@ -7,6 +7,7 @@
#include <inc/assert.h>
#include <kern/console.h>
#include <kern/ansi.h>
static void cons_intr(int (*proc)(void));
static void cons_putc(int c);
@ -128,6 +129,7 @@ lpt_putc(int c)
static unsigned addr_6845;
static uint16_t *crt_buf;
static uint16_t crt_pos;
static struct AttrState attst;
static void
cga_init(void)
@ -136,6 +138,10 @@ cga_init(void)
uint16_t was;
unsigned pos;
attst.cattrs = 0;
attst.attrs = 0;
attst.state = NORMAL;
cp = (uint16_t*) (KERNBASE + CGA_BUF);
was = *cp;
*cp = (uint16_t) 0xA55A;
@ -157,10 +163,15 @@ cga_init(void)
crt_pos = pos;
}
static void cga_putc_internal(int c);
static void
cga_putc(int c)
cga_putc(int c){
ansi_step(cga_putc_internal, c, &attst);
}
static void
cga_putc_internal(int c)
{
// if no attribute given, then use black on white
if (!(c & ~0xFF))

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@ -29,6 +29,14 @@ i386_init(void)
// Lab 2 memory management initialization functions
mem_init();
// Test ANSI color escape codes
cprintf("\33[31m" "C"
"\33[33m" "o"
"\33[32m" "l"
"\33[36m" "o"
"\33[34m" "r"
"\33[0m" " Works!" "\n");
// Drop into the kernel monitor.
while (1)
monitor(NULL);

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@ -171,7 +171,8 @@ debuginfo_eip(uintptr_t addr, struct Eipdebuginfo *info)
// Search within [lline, rline] for the line number stab.
// If found, set info->eip_line to the right line number.
// If found, set info->eip_line to the correct line number.
// e.g., info->eip_line = stabs[lline].n_desc
// If not found, return -1.
//
// Hint:
@ -179,6 +180,12 @@ debuginfo_eip(uintptr_t addr, struct Eipdebuginfo *info)
// Look at the STABS documentation and <inc/stab.h> to find
// which one.
// Your code here.
stab_binsearch(stabs, &lline, &rline, N_SLINE, addr);
if(lline <= rline) {
info->eip_line = stabs[lline].n_desc;
} else {
info->eip_line = -1;
}
// Search backwards from the line number for the relevant filename

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@ -25,6 +25,7 @@ struct Command {
static struct Command commands[] = {
{ "help", "Display this list of commands", mon_help },
{ "kerninfo", "Display information about the kernel", mon_kerninfo },
{ "backtrace", "Display current backtrace", mon_backtrace }
};
/***** Implementations of basic kernel monitor commands *****/
@ -61,6 +62,25 @@ mon_backtrace(int argc, char **argv, struct Trapframe *tf)
// LAB 1: Your code here.
// HINT 1: use read_ebp().
// HINT 2: print the current ebp on the first line (not current_ebp[0])
uint32_t* ebp;
uint32_t eip;
struct Eipdebuginfo info;
ebp = (uint32_t*) read_ebp();
cprintf("Stack backtrace:\n");
while(ebp) {
eip = ebp[1];
cprintf(" ebp %08x eip %08x args %08x %08x %08x %08x %08x\n",
ebp, eip, ebp[2], ebp[3], ebp[4], ebp[5], ebp[6]);
ebp = (uint32_t*) ebp[0];
debuginfo_eip(eip, &info);
cprintf(" %s:%d: %.*s+%d\n",
info.eip_file, info.eip_line,
info.eip_fn_namelen, info.eip_fn_name,
eip - info.eip_fn_addr);
};
return 0;
}

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@ -205,11 +205,9 @@ vprintfmt(void (*putch)(int, void*), void *putdat, const char *fmt, va_list ap)
// (unsigned) octal
case 'o':
// LAB 1: Replace this with your code.
putch('X', putdat);
putch('X', putdat);
putch('X', putdat);
break;
num = getuint(&ap, lflag);
base = 8;
goto number;
// pointer
case 'p':

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@ -1,5 +1,5 @@
OSU ID (xxx-yyy-zzz) : 933456789
FLIP ID (e.g., jangye) : jangye
Name : Yeongjin Jang
OSU ID (xxx-yyy-zzz) : 932700867
FLIP ID (e.g., jangye) : fedorind
Name : Danila Fedorin
CS 444/544 ? : 444
Lab Class # : Lab 1
Lab Class # : Lab 2