diff options
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/lib/stack.c | 51 |
2 files changed, 52 insertions, 0 deletions
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 7c081ac269..a3235a2062 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -39,6 +39,7 @@ ramstage-y += version.c ramstage-y += cbfs.c ramstage-y += lzma.c #ramstage-y += lzmadecode.c +ramstage-y += stack.c ramstage-y += gcc.c ramstage-y += clog2.c ramstage-y += cbmem.c diff --git a/src/lib/stack.c b/src/lib/stack.c new file mode 100644 index 0000000000..3f04b63828 --- /dev/null +++ b/src/lib/stack.c @@ -0,0 +1,51 @@ +/* +This software and ancillary information (herein called SOFTWARE ) +called LinuxBIOS is made available under the terms described +here. The SOFTWARE has been approved for release with associated +LA-CC Number 00-34 . Unless otherwise indicated, this SOFTWARE has +been authored by an employee or employees of the University of +California, operator of the Los Alamos National Laboratory under +Contract No. W-7405-ENG-36 with the U.S. Department of Energy. The +U.S. Government has rights to use, reproduce, and distribute this +SOFTWARE. The public may copy, distribute, prepare derivative works +and publicly display this SOFTWARE without charge, provided that this +Notice and any statement of authorship are reproduced on all copies. +Neither the Government nor the University makes any warranty, express +or implied, or assumes any liability or responsibility for the use of +this SOFTWARE. If SOFTWARE is modified to produce derivative works, +such modified SOFTWARE should be clearly marked, so as not to confuse +it with the version available from LANL. + */ +/* Copyright 2000, Ron Minnich, Advanced Computing Lab, LANL + * rminnich@lanl.gov + */ + +#include <lib.h> +#include <console/console.h> + +int checkstack(void *top_of_stack, int core) +{ + int i; + u32 *stack = (u32 *) (top_of_stack - CONFIG_STACK_SIZE); + + if (stack[0] != 0xDEADBEEF){ + printk(BIOS_ERR, "Stack overrun on CPU%d." + "Increase stack from current %d bytes\n", + CONFIG_STACK_SIZE, core); + return -1; + } + + for(i = 0; i < CONFIG_STACK_SIZE/sizeof(stack[0]); i++){ + if (stack[i] == 0xDEADBEEF) + continue; + printk(BIOS_SPEW, "CPU%d: stack from %p to %p:", + core, + stack, + &stack[CONFIG_STACK_SIZE/sizeof(stack[0])]); + printk(BIOS_SPEW, "Lowest stack address %p\n", &stack[i]); + return -1; + } + + return 0; + +} |