X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=doc%2Ftour.texi;h=d1147dde6b0e91d891d5192cbf6bcc841781b920;hb=0b5c88dd9b00536c328859a26738535b4a0af067;hp=39483a32011d6f64c0a43ac13277105d10436f0b;hpb=f83a74b3b1b52c1c20196b58bc00123529ad4524;p=pintos-anon diff --git a/doc/tour.texi b/doc/tour.texi index 39483a3..d1147dd 100644 --- a/doc/tour.texi +++ b/doc/tour.texi @@ -782,11 +782,7 @@ In Pintos, @func{intr_init} in @file{threads/interrupt.c} sets up the IDT so that each entry points to a unique entry point in @file{threads/intr-stubs.S} named @func{intr@var{NN}_stub}, where @var{NN} is the interrupt number in -hexadecimal.@footnote{@file{threads/intr-stubs.S} is so repetitive -that it is actually generated by a Perl script, -@file{threads/intr-stubs.pl}. Thus, you will actually find -@file{threads/intr-stubs.S} in your @file{threads/build/threads} -directory, not in plain @file{threads}.} Because the CPU doesn't give +hexadecimal. Because the CPU doesn't give us any other way to find out the interrupt number, this entry point pushes the interrupt number on the stack. Then it jumps to @func{intr_entry}, which pushes all the registers that the processor