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| author | Michael Brown | 2008-08-26 06:03:19 +0200 |
|---|---|---|
| committer | Michael Brown | 2008-08-26 06:03:19 +0200 |
| commit | d5732b027252e87509aea29d35d2c2f020f11ec2 (patch) | |
| tree | 8896e193eccfec603694f7685eb5d0b7dd9b21a2 | |
| parent | [phantom] Remove comment that no longer matches reality (diff) | |
| download | ipxe-d5732b027252e87509aea29d35d2c2f020f11ec2.tar.gz ipxe-d5732b027252e87509aea29d35d2c2f020f11ec2.tar.xz ipxe-d5732b027252e87509aea29d35d2c2f020f11ec2.zip | |
[romprefix] Preserve %edi when issuing INT 1A,B101
INT 1A,B101 (get PCI BIOS version) will overwrite %edi.
| -rw-r--r-- | src/arch/i386/prefix/romprefix.S | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/arch/i386/prefix/romprefix.S b/src/arch/i386/prefix/romprefix.S index 8b2e20b2..b22cbab3 100644 --- a/src/arch/i386/prefix/romprefix.S +++ b/src/arch/i386/prefix/romprefix.S @@ -177,6 +177,7 @@ init: /* Check for PCI BIOS version */ pushl %ebx pushl %edx + pushl %edi stc movw $0xb101, %ax int $0x1a @@ -199,7 +200,8 @@ init: 1: /* PCI <3.0: set %gs (runtime segment) = %cs (init-time segment) */ pushw %cs popw %gs -2: popl %edx +2: popl %edi + popl %edx popl %ebx /* Check for PnP BIOS */ |