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Start working on memory-mapped files.

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First of all, change sys$mmap to take a struct SC_mmap_params since our
sycsall calling convention can't handle more than 3 arguments.

This exposed a bug in Syscall::invoke() needing to use clobber lists.
It was a bit confusing to debug. :^)
This commit is contained in:
Andreas Kling 2018-11-08 11:37:01 +01:00
parent 41a751c90c
commit fdbd9f1e27
14 changed files with 82 additions and 26 deletions
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13
LibC/mman.h
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@ -3,9 +3,20 @@
#include <sys/cdefs.h>
#include <sys/types.h>
#define MAP_SHARED 0x01
#define MAP_PRIVATE 0x02
#define MAP_FIXED 0x10
#define MAP_ANONYMOUS 0x20
#define MAP_ANON MAP_ANONYMOUS
#define PROT_READ 0x1
#define PROT_WRITE 0x2
#define PROT_EXEC 0x4
#define PROT_NONE 0x0
__BEGIN_DECLS
void* mmap(void*, size_t);
void* mmap(void* addr, size_t, int prot, int flags, int fd, off_t);
int munmap(void*, size_t);
int set_mmap_name(void*, size_t, const char*);