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| author | Michael Brown | 2007-07-04 04:23:02 +0200 |
|---|---|---|
| committer | Michael Brown | 2007-07-04 04:23:02 +0200 |
| commit | ac69b85adb8f3f58e2b9eb70bedf69de5c820934 (patch) | |
| tree | d8a384ea48adf6c2e2b61bc914919ad1e146e5e1 /src | |
| parent | !PXE and PXENV+ structures are in code segment, not data segment. (diff) | |
| download | ipxe-ac69b85adb8f3f58e2b9eb70bedf69de5c820934.tar.gz ipxe-ac69b85adb8f3f58e2b9eb70bedf69de5c820934.tar.xz ipxe-ac69b85adb8f3f58e2b9eb70bedf69de5c820934.zip | |
UNDI loader entry point implemented; seems to work.
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/i386/prefix/romprefix.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/arch/i386/prefix/romprefix.S b/src/arch/i386/prefix/romprefix.S index 520016996..f68c14e03 100644 --- a/src/arch/i386/prefix/romprefix.S +++ b/src/arch/i386/prefix/romprefix.S @@ -167,6 +167,34 @@ exec_message: * Called by an external program to load our PXE stack. */ undiloader: + /* Save registers */ + pushl %edi + pushw %es + pushw %bx + /* UNDI loader parameter structure address into %es:%di */ + movw %sp, %bx + movw %ss:12(%bx), %di + movw %ss:14(%bx), %es + /* Install to specified real-mode addresses */ + pushw %di + movw %es:12(%di), %bx + movw %es:14(%di), %ax + call install_prealloc + popw %di + /* Call UNDI loader C code */ + pushl $pxe_loader_call + pushw %cs + pushw $1f + pushw %ax + pushw $prot_call + lret +1: popw %bx /* discard */ + popw %bx /* discard */ + /* Restore registers and return */ + popw %bx + popw %es + popl %edi + lret .size undiloader, . - undiloader /* Utility function: print string |