From 443d6288386f5521efa7d49bc8ea5be04f5fd696 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Sun, 19 Feb 2012 18:11:39 -0500
Subject: libmach, acid, db: 64-bit support

---
 src/libmach/elfcorefreebsdamd64.c | 150 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 src/libmach/elfcorefreebsdamd64.c

(limited to 'src/libmach/elfcorefreebsdamd64.c')

diff --git a/src/libmach/elfcorefreebsdamd64.c b/src/libmach/elfcorefreebsdamd64.c
new file mode 100644
index 00000000..aefed432
--- /dev/null
+++ b/src/libmach/elfcorefreebsdamd64.c
@@ -0,0 +1,150 @@
+#include <u.h>
+#include <libc.h>
+#include <mach.h>
+#include "elf.h"
+#include "uregamd64.h"
+
+typedef struct Ureg Ureg;
+
+// See FreeBSD's sys/procfs.h.
+
+typedef struct Lreg Lreg;
+typedef struct Status Status;
+typedef struct Psinfo Psinfo;
+
+struct Lreg
+{
+	u64int	r15;
+	u64int	r14;
+	u64int	r13;
+	u64int	r12;
+	u64int	r11;
+	u64int	r10;
+	u64int	r9;
+	u64int	r8;
+	u64int	rdi;
+	u64int	rsi;
+	u64int	rbp;
+	u64int	rbx;
+	u64int	rdx;
+	u64int	rcx;
+	u64int	rax;
+	u32int	trapno;
+	u16int	fs;
+	u16int	gs;
+	u32int	err;
+	u16int	es;
+	u16int	ds;
+	u64int	rip;
+	u64int	cs;
+	u64int	rflags;
+	u64int	rsp;
+	u64int	ss;
+};
+
+struct Status
+{
+	u32int		version;	/* Version number of struct (1) */
+	u64int		statussz;	/* sizeof(prstatus_t) (1) */
+	u64int		gregsetsz;	/* sizeof(gregset_t) (1) */
+	u64int		fpregsetsz;	/* sizeof(fpregset_t) (1) */
+	u32int		osreldate;	/* Kernel version (1) */
+	u32int		cursig;	/* Current signal (1) */
+	u32int		pid;		/* Process ID (1) */
+	Lreg		reg;		/* General purpose registers (1) */
+};
+
+struct Psinfo
+{
+	u32int	version;
+	u64int	size;
+	char	name[17];
+	char	psargs[81];
+};
+
+void
+elfcorefreebsdamd64(Fhdr *fp, Elf *elf, ElfNote *note)
+{
+	Status *s;
+	Lreg *l;
+	Ureg *u;
+	int i;
+
+	switch(note->type) {
+	case ElfNotePrStatus:
+		if(note->descsz < sizeof(Status)){
+			fprint(2, "warning: elf status note too small\n");
+			break;
+		}
+		s = (Status*)note->desc;
+		if(s->version != 1){
+			fprint(2, "warning: unknown elf note status version %ud\n", (uint)s->version);
+			break;
+		}
+		l = &s->reg;
+		u = malloc(sizeof(Ureg));
+	
+		/* no byte order problems - just copying and rearranging */
+		u->ax = l->rax;
+		u->bx = l->rbx;
+		u->cx = l->rcx;
+		u->dx = l->rdx;
+		u->si = l->rsi;
+		u->di = l->rdi;
+		u->bp = l->rbp;
+		u->r8 = l->r8;
+		u->r9 = l->r9;
+		u->r10 = l->r10;
+		u->r11 = l->r11;
+		u->r12 = l->r12;
+		u->r13 = l->r13;
+		u->r14 = l->r14;
+		u->r15 = l->r15;
+		
+		u->ds = l->ds;
+		u->es = l->es;
+		u->fs = l->fs;
+		u->gs = l->gs;
+		
+		u->type = l->trapno;
+		u->error = l->err;
+		u->ip = l->rip;
+		u->cs = l->cs;
+		u->flags = l->rflags;
+		u->sp = l->rsp;
+		u->ss = l->ss;
+		
+		if((fp->thread = realloc(fp->thread, (1+fp->nthread)*sizeof(fp->thread[0]))) == nil){
+			fprint(2, "warning: out of memory saving thread info\n");
+			return;
+		}
+		i = fp->nthread;
+		fp->thread[i].id = s->pid;
+		fp->thread[i].ureg = u;
+		fp->nthread++;
+		break;
+	}
+}
+
+int
+corecmdfreebsd386(Elf *elf, ElfNote *note, char **pp)
+{
+	char *t;
+	Psinfo *p;
+
+	*pp = nil;
+	if(note->descsz < sizeof(Psinfo)){
+		werrstr("elf psinfo note too small");
+		return -1;
+	}
+	p = (Psinfo*)note->desc;
+	/* print("elf name %s\nelf args %s\n", p->name, p->psargs); */
+	t = malloc(80+1);
+	if(t == nil)
+		return -1;
+	memmove(t, p->psargs, 80);
+	t[80] = 0;
+	*pp = t;
+	return 0;
+}
+
-- 
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