libmach

1 files changed, 95 insertions, 0 deletions

diff --git a/src/libmach/elfcorelinux386.c b/src/libmach/elfcorelinux386.c
new file mode 100644
index 00000000..f6a0234c
--- /dev/null
+++ b/src/libmach/elfcorelinux386.c
@@ -0,0 +1,95 @@
+#include <u.h>
+#include <libc.h>
+#include <mach.h>
+#include "elf.h"
+#include "ureg386.h"
+
+typedef struct Lreg Lreg;
+typedef struct Status Status;
+
+struct Lreg
+{
+	u32int	ebx;
+	u32int	ecx;
+	u32int	edx;
+	u32int	esi;
+	u32int	edi;
+	u32int	ebp;
+	u32int	eax;
+	u32int	ds;
+	u32int	es;
+	u32int	fs;
+	u32int	gs;
+	u32int	origeax;
+	u32int	eip;
+	u32int	cs;
+	u32int	eflags;
+	u32int	esp;
+	u32int	ss;
+};
+
+/*
+ * Lreg is 64-bit aligned within status, so we shouldn't 
+ * have any packing problems. 
+ */
+struct Status
+{
+	u32int	signo;
+	u32int	code;
+	u32int	errno;
+	u32int	cursig;
+	u32int	sigpend;
+	u32int	sighold;
+	u32int	pid;
+	u32int	ppid;
+	u32int	pgrp;
+	u32int	sid;
+	u32int	utime[2];
+	u32int	stime[2];
+	u32int	cutime[2];
+	u32int	cstime[2];
+	Lreg	reg;
+	u32int	fpvalid;
+};
+
+int
+coreregslinux386(Elf *elf, ElfNote *note, uchar **up)
+{
+	Status *s;
+	Lreg *l;
+	Ureg *u;
+
+	if(note->descsz < sizeof(Status)){
+		werrstr("elf status note too small");
+		return -1;
+	}
+	s = (Status*)note->desc;
+	l = &s->reg;
+	u = malloc(sizeof(Ureg));
+	if(u == nil)
+		return -1;
+
+	/* no byte order problems - just copying and rearranging */
+	u->di = l->edi;
+	u->si = l->esi;
+	u->bp = l->ebp;
+	u->nsp = l->esp;
+	u->bx = l->ebx;
+	u->dx = l->edx;
+	u->cx = l->ecx;
+	u->ax = l->eax;
+	u->gs = l->gs;
+	u->fs = l->fs;
+	u->es = l->es;
+	u->ds = l->ds;
+	u->trap = ~0; // l->trapno;
+	u->ecode = ~0; // l->err;
+	u->pc = l->eip;
+	u->cs = l->cs;
+	u->flags = l->eflags;
+	u->sp = l->esp;
+	u->ss = l->ss;
+	*up = (uchar*)u;
+	return sizeof(Ureg);
+}
+