Date: Sun, 21 Dec 2008 04:40:03 +0000 (UTC) From: Takahashi Yoshihiro <nyan@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r186370 - user/nyan/pc98/sys/boot/pc98/btx/btxldr Message-ID: <200812210440.mBL4e3ED023691@svn.freebsd.org>
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Author: nyan Date: Sun Dec 21 04:40:02 2008 New Revision: 186370 URL: http://svn.freebsd.org/changeset/base/186370 Log: MFi386: 185779:185781 Respect RBX_MUTE flag from boot2. Modified: user/nyan/pc98/sys/boot/pc98/btx/btxldr/btxldr.S Modified: user/nyan/pc98/sys/boot/pc98/btx/btxldr/btxldr.S ============================================================================== --- user/nyan/pc98/sys/boot/pc98/btx/btxldr/btxldr.S Sun Dec 21 04:34:20 2008 (r186369) +++ user/nyan/pc98/sys/boot/pc98/btx/btxldr/btxldr.S Sun Dec 21 04:40:02 2008 (r186370) @@ -15,6 +15,9 @@ * $FreeBSD$ */ +#define RBX_MUTE 0x10 /* -m */ +#define OPT_SET(opt) (1 << (opt)) + /* * Prototype BTX loader program, written in a couple of hours. The * real thing should probably be more flexible, and in C. @@ -64,6 +67,8 @@ */ start: cld # String ops inc cli + testl $OPT_SET(RBX_MUTE), 4(%esp) # Check first argument + setnz muted # for RBX_MUTE, set flag gdcwait.1: inb $0x60,%al testb $0x04,%al jz gdcwait.1 @@ -309,7 +314,9 @@ putstr: lodsb # Load char /* * Output character AL to the console. */ -putchr: pusha # Save +putchr: testb $1,muted # Check muted + jnz putchr.5 # do a nop + pusha # Save xorl %ecx,%ecx # Zero for loops movb $SCR_MAT,%ah # Mode/attribute movl $BDA_POS,%ebx # BDA pointer @@ -353,7 +360,7 @@ gdcwait.3: inb $0x60,%al movb %dh,%al outb %al,$0x60 popa # Restore - ret # To caller +putchr.5: ret # To caller /* * Convert EAX, AX, or AL to hex, saving the result to [EDI]. */ @@ -418,6 +425,12 @@ m_segs: .asciz "text segment: offset=" .asciz " memsz=\0\n" m_done: .asciz "Loading complete\n" #endif + +/* + * Flags + */ +muted: .byte 0x0 + /* * Uninitialized data area. */
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