diff options
Diffstat (limited to 'v_windows/v/old/vlib/builtin/linux_bare/memory_managment.v')
-rw-r--r-- | v_windows/v/old/vlib/builtin/linux_bare/memory_managment.v | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/builtin/linux_bare/memory_managment.v b/v_windows/v/old/vlib/builtin/linux_bare/memory_managment.v new file mode 100644 index 0000000..9c23dcf --- /dev/null +++ b/v_windows/v/old/vlib/builtin/linux_bare/memory_managment.v @@ -0,0 +1,29 @@ +module builtin + +fn mm_alloc(size u64) (&byte, Errno) { + // BEGIN CONSTS + // the constants need to be here, since the initialization of other constants, + // which happen before these ones would, require malloc + mem_prot := MemProt(int(MemProt.prot_read) | int(MemProt.prot_write)) + map_flags := MapFlags(int(MapFlags.map_private) | int(MapFlags.map_anonymous)) + // END CONSTS + + a, e := sys_mmap(&byte(0), size + sizeof(u64), mem_prot, map_flags, -1, 0) + if e == .enoerror { + unsafe { + mut ap := &u64(a) + *ap = size + x2 := &byte(a + sizeof(u64)) + return x2, e + } + } + return &byte(0), e +} + +fn mm_free(addr &byte) Errno { + unsafe { + ap := &u64(addr - sizeof(u64)) + size := *ap + return sys_munmap(addr - sizeof(u64), size + sizeof(u64)) + } +} |