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Implement Dump and Registers commands

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This commit is contained in:
Ali Mashtizadeh 2014-07-13 14:44:05 -07:00
parent befee0cf6b
commit b553da4d10
2 changed files with 82 additions and 0 deletions
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28
sys/amd64/debug.c
View File

@ -6,6 +6,8 @@
#include <kdebug.h>
#include <mp.h>
#include "amd64.h"
#include "amd64op.h"
#include "trap.h"
TrapFrame *frames[MAX_CPUS];
@ -25,5 +27,31 @@ Debug_Breakpoint(TrapFrame *tf)
void
Debug_Registers(int argc, const char *argv[])
{
TrapFrame *tf = frames[CPU()];
kprintf("Interrupt %d Error Code: %016llx\n",
tf->vector, tf->errcode);
kprintf("cr0: %016llx cr2: %016llx\n",
read_cr0(), read_cr2());
kprintf("cr3: %016llx cr4: %016llx\n",
read_cr3(), read_cr4());
kprintf("dr0: %016llx dr1: %016llx dr2: %016llx\n",
read_dr0(), read_dr1(), read_dr2());
kprintf("dr3: %016llx dr6: %016llx dr7: %016llx\n",
read_dr3(), read_dr6(), read_dr7());
kprintf("rip: %04x:%016x rsp: %04x:%016x\n",
tf->cs, tf->rip, tf->ss, tf->rsp);
kprintf("rflags: %016x ds: %04x es: %04x fs: %04x gs: %04x\n",
tf->rflags, read_ds(), read_es(), read_fs(), read_gs());
kprintf("rax: %016llx rbx: %016llx rcx: %016llx\n",
tf->rax, tf->rbx, tf->rcx);
kprintf("rdx: %016llx rsi: %016llx rdi: %016llx\n",
tf->rdx, tf->rsi, tf->rdi);
kprintf("rbp: %016llx r8: %016llx r9: %016llx\n",
tf->rbp, tf->r8, tf->r9);
kprintf("r10: %016llx r11: %016llx r12: %016llx\n",
tf->r10, tf->r11, tf->r12);
kprintf("r13: %016llx r14: %016llx r15: %016llx\n",
tf->r13, tf->r14, tf->r15);
}

54
sys/kern/debug.c
View File

@ -77,12 +77,56 @@ Debug_PrintHex(const char *data, size_t length, off_t off, size_t limit)
}
}
uint64_t
Debug_StrToInt(const char *s)
{
int i = 0;
int base = 10;
uint64_t val = 0;
if (s[0] == '0' && s[1] == 'x')
{
base = 16;
i = 2;
}
while (s[i] != '\0') {
if (s[i] >= '0' && s[i] <= '9') {
val = val * base + (uint64_t)(s[i] - '0');
} else if (s[i] >= 'a' && s[i] <= 'f') {
if (base != 16)
kprintf("Not base 16!\n");
val = val * base + (uint64_t)(s[i] - 'a' + 10);
} else if (s[i] >= 'A' && s[i] <= 'F') {
if (base != 16)
kprintf("Not base 16!\n");
val = val * base + (uint64_t)(s[i] - 'A' + 10);
} else {
kprintf("Not a number!\n");
}
i++;
}
return val;
}
uint64_t
Debug_SymbolToInt(const char *s)
{
if (*s >= '0' || *s <= '9')
return Debug_StrToInt(s);
kprintf("Unknown symbol '%s'\n");
return 0;
}
#define PHELP(_cmd, _msg) kprintf("%-16s %s\n", _cmd, _msg)
void
Debug_Help(int argc, const char *argv[])
{
PHELP("dump", "Dump a region of memory");
PHELP("registers", "Show CPU registers");
PHELP("help", "Display the list of commands");
}
@ -101,6 +145,14 @@ Debug_Echo(int argc, const char *argv[])
void
Debug_Dump(int argc, const char *argv[])
{
uint64_t off, len;
if (argc == 3)
{
off = Debug_SymbolToInt(argv[1]);
len = Debug_SymbolToInt(argv[2]);
}
kprintf("Dump 0x%llx 0x%llx\n", off, len);
Debug_PrintHex((const char *)off, len, 0, len);
}
void
@ -136,6 +188,8 @@ Debug_Prompt()
Debug_Help(argc, argv);
} else if (strcmp(argv[0], "dump") == 0) {
Debug_Dump(argc, argv);
} else if (strcmp(argv[0], "registers") == 0) {
Debug_Registers(argc, argv);
} else if (strcmp(argv[0], "echo") == 0) {
Debug_Echo(argc, argv);
} else if (strcmp(argv[0], "") != 0) {