#include <unistd.h> #include <sys/syscall.h> #include <errno.h> /* This must be initialized data because commons can't have aliases. */ void * __curbrk = 0; int attribute_hidden __brk (void *addr) { void *newbrk; __asm__ __volatile__( "P0 = %2;\n\t" "R0 = %1;\n\t" "excpt 0;\n\t" "%0 = R0;\n\t" : "=r"(newbrk) : "r"(addr), "i" (__NR_brk): "P0" ); __curbrk = newbrk; if (newbrk < addr) { __set_errno (ENOMEM); return -1; } return 0; } strong_alias(__brk,brk)