Module Name: src
Committed By: uwe
Date: Sat Feb 11 11:02:31 UTC 2023
Modified Files:
src/share/man/man4: bpf.4
Log Message:
bpf(4): use \[<-] instead of <-
To generate a diff of this commit:
cvs rdiff -u -r1.67 -r1.68 src/share/man/man4/bpf.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/bpf.4
diff -u src/share/man/man4/bpf.4:1.67 src/share/man/man4/bpf.4:1.68
--- src/share/man/man4/bpf.4:1.67 Sat Feb 11 02:52:52 2023
+++ src/share/man/man4/bpf.4 Sat Feb 11 11:02:31 2023
@@ -1,6 +1,6 @@
.\" -*- nroff -*-
.\"
-.\" $NetBSD: bpf.4,v 1.67 2023/02/11 02:52:52 uwe Exp $
+.\" $NetBSD: bpf.4,v 1.68 2023/02/11 11:02:31 uwe Exp $
.\"
.\" Copyright (c) 1990, 1991, 1992, 1993, 1994
.\" The Regents of the University of California. All rights reserved.
@@ -601,16 +601,16 @@ or byte
Arithmetic overflow when calculating a variable offset terminates
the filter program and the packet is ignored.
The semantics of all the recognized BPF_LD instructions follow.
-.Bl -column "BPF_LD_BPF_W_BPF_ABS" "A <- P[k:4]" -offset indent
-.It Sy BPF_LD+BPF_W+BPF_ABS Ta A <- P[k:4]
-.It Sy BPF_LD+BPF_H+BPF_ABS Ta A <- P[k:2]
-.It Sy BPF_LD+BPF_B+BPF_ABS Ta A <- P[k:1]
-.It Sy BPF_LD+BPF_W+BPF_IND Ta A <- P[X+k:4]
-.It Sy BPF_LD+BPF_H+BPF_IND Ta A <- P[X+k:2]
-.It Sy BPF_LD+BPF_B+BPF_IND Ta A <- P[X+k:1]
-.It Sy BPF_LD+BPF_W+BPF_LEN Ta A <- len
-.It Sy BPF_LD+BPF_IMM Ta A <- k
-.It Sy BPF_LD+BPF_MEM Ta A <- M[k]
+.Bl -column "BPF_LD_BPF_W_BPF_ABS" "A \[<-] P[k:4]" -offset indent
+.It Sy BPF_LD+BPF_W+BPF_ABS Ta A \[<-] P[k:4]
+.It Sy BPF_LD+BPF_H+BPF_ABS Ta A \[<-] P[k:2]
+.It Sy BPF_LD+BPF_B+BPF_ABS Ta A \[<-] P[k:1]
+.It Sy BPF_LD+BPF_W+BPF_IND Ta A \[<-] P[X+k:4]
+.It Sy BPF_LD+BPF_H+BPF_IND Ta A \[<-] P[X+k:2]
+.It Sy BPF_LD+BPF_B+BPF_IND Ta A \[<-] P[X+k:1]
+.It Sy BPF_LD+BPF_W+BPF_LEN Ta A \[<-] len
+.It Sy BPF_LD+BPF_IMM Ta A \[<-] k
+.It Sy BPF_LD+BPF_MEM Ta A \[<-] M[k]
.El
.It Sy BPF_LDX
These instructions load a value into the index register.
@@ -618,23 +618,23 @@ Note that the addressing modes are more
the accumulator loads, but they include
.Sy BPF_MSH ,
a hack for efficiently loading the IP header length.
-.Bl -column "BPF_LDX_BPF_W_BPF_MEM" "X <- k" -offset indent
-.It Sy BPF_LDX+BPF_W+BPF_IMM Ta X <- k
-.It Sy BPF_LDX+BPF_W+BPF_MEM Ta X <- M[k]
-.It Sy BPF_LDX+BPF_W+BPF_LEN Ta X <- len
-.It Sy BPF_LDX+BPF_B+BPF_MSH Ta X <- 4*(P[k:1]&0xf)
+.Bl -column "BPF_LDX_BPF_W_BPF_MEM" "X \[<-] k" -offset indent
+.It Sy BPF_LDX+BPF_W+BPF_IMM Ta X \[<-] k
+.It Sy BPF_LDX+BPF_W+BPF_MEM Ta X \[<-] M[k]
+.It Sy BPF_LDX+BPF_W+BPF_LEN Ta X \[<-] len
+.It Sy BPF_LDX+BPF_B+BPF_MSH Ta X \[<-] 4*(P[k:1]&0xf)
.El
.It Sy BPF_ST
This instruction stores the accumulator into the scratch memory.
We do not need an addressing mode since there is only one possibility
for the destination.
-.Bl -column "BPF_ST" "M[k] <- A" -offset indent
-.It Sy BPF_ST Ta M[k] <- A
+.Bl -column "BPF_ST" "M[k] \[<-] A" -offset indent
+.It Sy BPF_ST Ta M[k] \[<-] A
.El
.It Sy BPF_STX
This instruction stores the index register in the scratch memory store.
-.Bl -column "BPF_STX" "M[k] <- X" -offset indent
-.It Sy BPF_STX Ta M[k] <- X
+.Bl -column "BPF_STX" "M[k] \[<-] X" -offset indent
+.It Sy BPF_STX Ta M[k] \[<-] X
.El
.It Sy BPF_ALU
The alu instructions perform operations between the accumulator and
@@ -643,24 +643,24 @@ For binary operations, a source mode is
.Sy ( BPF_K
or
.Sy BPF_X ) .
-.Bl -column "BPF_ALU_BPF_ADD_BPF_K" "A <- A + k" -offset indent
-.It Sy BPF_ALU+BPF_ADD+BPF_K Ta A <- A + k
-.It Sy BPF_ALU+BPF_SUB+BPF_K Ta A <- A - k
-.It Sy BPF_ALU+BPF_MUL+BPF_K Ta A <- A * k
-.It Sy BPF_ALU+BPF_DIV+BPF_K Ta A <- A / k
-.It Sy BPF_ALU+BPF_AND+BPF_K Ta A <- A & k
-.It Sy BPF_ALU+BPF_OR+BPF_K Ta A <- A | k
-.It Sy BPF_ALU+BPF_LSH+BPF_K Ta A <- A << k
-.It Sy BPF_ALU+BPF_RSH+BPF_K Ta A <- A >> k
-.It Sy BPF_ALU+BPF_ADD+BPF_X Ta A <- A + X
-.It Sy BPF_ALU+BPF_SUB+BPF_X Ta A <- A - X
-.It Sy BPF_ALU+BPF_MUL+BPF_X Ta A <- A * X
-.It Sy BPF_ALU+BPF_DIV+BPF_X Ta A <- A / X
-.It Sy BPF_ALU+BPF_AND+BPF_X Ta A <- A & X
-.It Sy BPF_ALU+BPF_OR+BPF_X Ta A <- A | X
-.It Sy BPF_ALU+BPF_LSH+BPF_X Ta A <- A << X
-.It Sy BPF_ALU+BPF_RSH+BPF_X Ta A <- A >> X
-.It Sy BPF_ALU+BPF_NEG Ta A <- -A
+.Bl -column "BPF_ALU_BPF_ADD_BPF_K" "A \[<-] A + k" -offset indent
+.It Sy BPF_ALU+BPF_ADD+BPF_K Ta A \[<-] A + k
+.It Sy BPF_ALU+BPF_SUB+BPF_K Ta A \[<-] A - k
+.It Sy BPF_ALU+BPF_MUL+BPF_K Ta A \[<-] A * k
+.It Sy BPF_ALU+BPF_DIV+BPF_K Ta A \[<-] A / k
+.It Sy BPF_ALU+BPF_AND+BPF_K Ta A \[<-] A & k
+.It Sy BPF_ALU+BPF_OR+BPF_K Ta A \[<-] A | k
+.It Sy BPF_ALU+BPF_LSH+BPF_K Ta A \[<-] A << k
+.It Sy BPF_ALU+BPF_RSH+BPF_K Ta A \[<-] A >> k
+.It Sy BPF_ALU+BPF_ADD+BPF_X Ta A \[<-] A + X
+.It Sy BPF_ALU+BPF_SUB+BPF_X Ta A \[<-] A - X
+.It Sy BPF_ALU+BPF_MUL+BPF_X Ta A \[<-] A * X
+.It Sy BPF_ALU+BPF_DIV+BPF_X Ta A \[<-] A / X
+.It Sy BPF_ALU+BPF_AND+BPF_X Ta A \[<-] A & X
+.It Sy BPF_ALU+BPF_OR+BPF_X Ta A \[<-] A | X
+.It Sy BPF_ALU+BPF_LSH+BPF_X Ta A \[<-] A << X
+.It Sy BPF_ALU+BPF_RSH+BPF_X Ta A \[<-] A >> X
+.It Sy BPF_ALU+BPF_NEG Ta A \[<-] -A
.El
.It Sy BPF_JMP
The jump instructions alter flow of control.
@@ -706,17 +706,17 @@ fit into the above classes, and for any
be added.
Currently, these are the register transfer instructions
that copy the index register to the accumulator or vice versa.
-.Bl -column "BPF_MISC+BPF_TAX" "X <- A" -offset indent
-.It Sy BPF_MISC+BPF_TAX Ta X <- A
-.It Sy BPF_MISC+BPF_TXA Ta A <- X
+.Bl -column "BPF_MISC+BPF_TAX" "X \[<-] A" -offset indent
+.It Sy BPF_MISC+BPF_TAX Ta X \[<-] A
+.It Sy BPF_MISC+BPF_TXA Ta A \[<-] X
.El
.Pp
Also, two instructions to call a "coprocessor" if initialized by the kernel
component.
There is no coprocessor by default.
-.Bl -column "BPF_MISC+BPF_COPX" "A <- funcs[X](...)" -offset indent
-.It Sy BPF_MISC+BPF_COP Ta A <- funcs[k](..)
-.It Sy BPF_MISC+BPF_COPX Ta A <- funcs[X](..)
+.Bl -column "BPF_MISC+BPF_COPX" "A \[<-] funcs[X](...)" -offset indent
+.It Sy BPF_MISC+BPF_COP Ta A \[<-] funcs[k](..)
+.It Sy BPF_MISC+BPF_COPX Ta A \[<-] funcs[X](..)
.El
.Pp
If the coprocessor is not set or the function index is out of range, these
