Date: Tue, 21 Jun 2011 16:50:14 +0200 From: Henri Hennebert <hlh@restart.be> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: ZFS boot inside on the second partition inside a slice Message-ID: <4E00AFA6.4050305@restart.be> In-Reply-To: <201106210901.27338.jhb@freebsd.org> References: <BANLkTi=drd8vY84_4jqDZTFK%2Bsq=n0Kx9g@mail.gmail.com> <201106200951.47449.jhb@freebsd.org> <4E00699A.7010403@restart.be> <201106210901.27338.jhb@freebsd.org>
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On 06/21/2011 15:01, John Baldwin wrote: > Index: zfsldr.S > =================================================================== > --- zfsldr.S (revision 223339) > +++ zfsldr.S (working copy) > @@ -234,9 +234,12 @@ nread.1: xor %ecx,%ecx # Get > callw read # Read from disk > lea 0x10(%bp),%sp # Clear stack > jnc return # If success, return > - mov $msg_read,%si # Otherwise, set the error > - # message and fall through to > - # the error routine > + mov %ah,%al # Format > + mov $read_err,%di # error > + call hex8 # code > + mov $msg_read,%si # Set the error message and > + # fall through to the error > + # routine > /* > * Print out the error message pointed to by %ds:(%si) followed > * by a prompt, wait for a keypress, and then reboot the machine. > @@ -296,12 +299,28 @@ read.1: mov $msg_chs,%si > jmp error > msg_chs: .asciz "CHS not supported" > > +/* > + * Convert AL to hex, saving the result to [EDI]. > + */ > +hex8: push %ax # Save > + shrb $0x4,%al # Do upper > + call hex8.1 # 4 > + pop %ax # Restore > +hex8.1: andb $0xf,%al # Get lower 4 > + cmpb $0xa,%al # Convert > + sbbb $0x69,%al # to hex > + das # digit > + orb $0x20,%al # To lower case > + stosb # Save char > + ret # (Recursive) > + > /* Messages */ > > -msg_read: .asciz "Read" > -msg_part: .asciz "Boot" > +msg_read: .ascii "Read error: " > +read_err: .asciz "XX" > +msg_part: .asciz "Boot error" > > -prompt: .asciz " error\r\n" > +prompt: .asciz "\r\n" > > .org PRT_OFF,0x90 > I get Read error: 01 Henri
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