stacker 0.1.4

A stack growth library useful when implementing deeply recursive algorithms that may accidentally blow the stack.
Documentation 
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#include <asm.h>

.text

GLOBAL(__stacker_stack_pointer):
    mov %esp, %eax
    ret

GLOBAL(__stacker_switch_stacks):
    // CFI instructions tells the unwinder how to unwind this function
    // This enables unwinding through our extended stacks and also
    // backtrackes
    .cfi_startproc
    push %ebp
    .cfi_def_cfa_offset 8 // restore esp by adding 8
    .cfi_offset ebp, -8   // restore ebp from the stack
    mov %esp, %ebp
    .cfi_def_cfa_register ebp // restore esp from ebp
    mov 16(%ebp), %esp  // switch to our new stack
    mov 12(%ebp), %eax  // load function we're going to call
    push 8(%ebp)        // push argument to first function
    call *%eax          // call our function pointer
    mov %ebp, %esp      // restore the old stack pointer
    pop %ebp
    ret
    .cfi_endproc