From: dtrg <none@none>
Date: Mon, 23 Apr 2007 23:24:03 +0000 (+0000)
Subject: Now fetches argc, argv, env correctly from the host OS.
X-Git-Tag: release-6-0-pre-2~10
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=9b920e59cb5d2383997a281b4c6b68e790be7f07;p=ack.git

Now fetches argc, argv, env correctly from the host OS.
---

diff --git a/plat/linux386/boot.s b/plat/linux386/boot.s
index 86ce05b49..1fb7cc561 100644
--- a/plat/linux386/boot.s
+++ b/plat/linux386/boot.s
@@ -15,7 +15,32 @@
 begtext:
 	! This code is placed at the beginning of the ELF executable and is the
 	! first thing that runs.
-
+	!
+	! On entry, the stack looks like this:
+	!
+	! sp+..            NULL
+	! sp+8+(4*argc)   env (X quads)
+	! sp+4+(4*argc)   NULL
+	! sp+4            argv (argc quads)
+	! sp              argc
+	!
+	! The ACK actually expects:
+	!
+	! sp+8            argc
+	! sp+4            argv
+	! sp              env
+	
+	mov eax, (esp)    ! eax = argc
+	lea ebx, 4(esp)   ! ebx = argv
+	lea ecx, (esp)(eax*4)
+	add ecx, 12       ! environ
+	
+	push ecx         ! environ
+	push ebx         ! argc
+	push eax         ! argv
+	push eax         ! dummy, representing the return argument
+	xor ebp, ebp
+	
 	jmp __m_a_i_n
 	
 	! This provides an emergency exit routine used by EM.