/* brk on H8/300 by ysato */ #include <errno.h> #include <unistd.h> #include <sys/syscall.h> /* This must be initialized data because commons can't have aliases. */ void *__curbrk = 0; int attribute_hidden __brk (void *addr) { void *newbrk; asm ("mov.l %2,er1\n\t" "mov.l %1,er0\n\t" "trapa #0\n\t" "mov.l er0,%0" : "=r" (newbrk) : "0" (__NR_brk), "g" (addr) : "er0","er1"); __curbrk = newbrk; if (newbrk < addr) { __set_errno (ENOMEM); return -1; } return 0; } strong_alias(__brk,brk)