Registers

X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/923ea2c2cd9df7f02ddcfd8c543f63b76be44660..db9fad13f192963786c7ac90d305467ac00bd145:/net/http/fs.c?ds=inline diff --git a/net/http/fs.c b/net/http/fs.c index 54c5bd9..4fe2c41 100644 --- a/net/http/fs.c +++ b/net/http/fs.c @@ -34,14 +34,17 @@ #include "fsdata.h" #include "fsdata.c" #include +#include +#include +#include + +static char http_output_buffer[1024]; /*-----------------------------------------------------------------------------------*/ void handle_regs(struct fs_file *file) { - static unsigned char buf[2048]; - - sprintf(buf, + file->len = snprintf(http_output_buffer, sizeof(http_output_buffer), "Registers" "

At the time you requested this page, the system's registers were:

" "" @@ -61,10 +64,57 @@ void handle_regs(struct fs_file *file) *(unsigned long*)0xAFFF8, *(unsigned long*)0xAFFF0, *(unsigned long*)0xAFFF4); - + + file->data = http_output_buffer; +} + +#define LEFT (sizeof(http_output_buffer) - len) + +void handle_backtrace(struct fs_file *file) +{ + int i = 10; + int len; + unsigned long *pebp, *peip; + unsigned long ebp; + unsigned long cr3; + + char * buf = http_output_buffer; + + strcpy(buf, "Backtrace"); + len = strlen(buf); + ebp = *(unsigned long *)0xAFFE4; + cr3 = *(unsigned long *)0xAFFF8; + + len += snprintf(buf + len, LEFT, "0x%08x, from\n", *(unsigned long*)0xAFFF0); + + /* I never thought I'd do this again. */ + while ((peip = demap(cr3, ebp+4)) != 0x0 && i--) + { + len += snprintf(buf + len, LEFT, "0x%08x, from\n", *peip); + + pebp = demap(cr3, ebp); + if (!pebp) + { + len += snprintf(buf + len, LEFT, "<unreadable %ebp>\n"); + break; + } + if (ebp >= *pebp && *pebp) + { + len += snprintf(buf + len, LEFT, "<recursive %ebp>\n"); + break; + } + ebp = *pebp; + } + + if (i == -1) + len += snprintf(buf + len, LEFT, "...\n"); + else + len += snprintf(buf + len, LEFT, "<root>"); + + len += snprintf(buf + len, LEFT, ""); file->data = buf; - file->len = strlen(buf)-1; + file->len = len; } void handle_reboot(struct fs_file *file) @@ -87,6 +137,11 @@ fs_open(const char *name, struct fs_file *file) handle_regs(file); return 1; } + if (!strcmp(name, "/backtrace.html")) + { + handle_backtrace(file); + return 1; + } if (!strcmp(name, "/reboot")) { handle_reboot(file);