Merge branch 'lab1' into lab2

kern/Makefrag

@@ -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 \

kern/ansi.c

@@ -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;
+	}
+}
+

kern/ansi.h

@@ -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

kern/console.c

@@ -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))

kern/init.c

@@ -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);

kern/kdebug.c

@@ -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

kern/monitor.c

@@ -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;
 }
 

lib/printfmt.c

@@ -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.
+			num = getuint(&ap, lflag);
-			putch('X', putdat);
+			base = 8;
-			putch('X', putdat);
+			goto number;
-			putch('X', putdat);
-			break;
 
 		// pointer
 		case 'p':

student.info

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