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Add (untested) UNDI loader C-level implementation.

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This commit is contained in:
Michael Brown
2007-07-03 23:41:35 +01:00
parent 7db6b4b79c
commit dca470cb21
3 changed files with 64 additions and 74 deletions
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25
src/arch/i386/interface/pxe/pxe_call.c
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@@ -298,6 +298,31 @@ void pxe_api_call ( struct i386_all_regs *ix86 ) {
ix86->regs.ax = ret;
}
/**
* Dispatch PXE loader call
*
* @v es:di Address of PXE parameter block
* @ret ax PXE exit code
*/
void pxe_loader_call ( struct i386_all_regs *ix86 ) {
userptr_t uparams = real_to_user ( ix86->segs.es, ix86->regs.di );
struct s_UNDI_LOADER params;
PXENV_EXIT_t ret;
/* Copy parameter block from caller */
copy_from_user ( &params, uparams, 0, sizeof ( params ) );
/* Set default status in case child routine fails to do so */
params.Status = PXENV_STATUS_FAILURE;
/* Call UNDI loader */
ret = undi_loader ( &params );
/* Copy modified parameter block back to caller and return */
copy_to_user ( uparams, 0, &params, sizeof ( params ) );
ix86->regs.ax = ret;
}
/**
* Hook INT 1A for PXE
*