diff options
author | Joel Sherrill <joel.sherrill@oarcorp.com> | 2012-10-24 15:38:22 -0500 |
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committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2012-10-24 15:38:22 -0500 |
commit | 34e1fb2c5a0141161dcd1b5fb419e43cae20681e (patch) | |
tree | b76f22996d80002c6d64ad08ac240012d9cb2d6f | |
parent | Tool patches: Add newlib patch needed (diff) | |
download | rtems-libbsd-34e1fb2c5a0141161dcd1b5fb419e43cae20681e.tar.bz2 |
Add support for kvm.h in RTEMS terms
The implementation uses an array of strings and variable names. The
names are weak symbolic references to the items we have seen calls
to kvm services with.
-rw-r--r-- | .gitignore | 1 | ||||
-rw-r--r-- | freebsd-userspace/Makefile | 8 | ||||
-rwxr-xr-x | freebsd-userspace/rtems/generate_kvm_symbols | 108 | ||||
-rw-r--r-- | freebsd-userspace/rtems/kvm_private.h | 13 | ||||
-rw-r--r-- | freebsd-userspace/rtems/rtems-kvm.c | 107 |
5 files changed, 236 insertions, 1 deletions
@@ -66,3 +66,4 @@ rtemsbsd/v850/include/freebsd/machine/pci_cfgreg.h freebsd-userspace/lib/libc/net/nslexer.c freebsd-userspace/lib/libc/net/nsparser.c freebsd-userspace/lib/libc/net/nsparser.i +freebsd-userspace/rtems/rtems-kvm-symbols.c diff --git a/freebsd-userspace/Makefile b/freebsd-userspace/Makefile index 554ca649..cef8546e 100644 --- a/freebsd-userspace/Makefile +++ b/freebsd-userspace/Makefile @@ -163,6 +163,8 @@ C_FILES += lib/libipsec/policy_parse.c # RTEMS Specific Files # C_FILES += rtems/rtems-net-setup.c C_FILES += rtems/syslog.c +C_FILES += rtems/rtems-kvm.c +C_FILES += rtems/rtems-kvm-symbols.c C_FILES += rtems/rtems-syslog-initialize.c C_FILES += rtems/rtems-getprogname.c C_FILES += rtems/rtems-uthread_main_np.c @@ -270,7 +272,8 @@ NETSTAT = commands/usr.bin/netstat/netstat.rel COMMAND_RELS = $(NETSTAT) $(IFCONFIG) -GEN_FILES = include/rpc/rpcb_prot.h +GEN_FILES = rtems/rtems-kvm-symbols.c +GEN_FILES += include/rpc/rpcb_prot.h GEN_FILES += commands/sbin/route/keywords.h # lib/libc/net GEN_FILES += lib/libc/net/nslexer.c @@ -295,6 +298,9 @@ $(IFCONFIG): $(IFCONFIG_C_O_FILES) $(NETSTAT): $(NETSTAT_C_O_FILES) $(LD) -r -o $@ $^ +rtems/rtems-kvm-symbols.c: rtems/generate_kvm_symbols + ./rtems/generate_kvm_symbols >rtems/rtems-kvm-symbols.c + include/rpc/rpcb_prot.h: include/rpc/rpcb_prot.x rm -f include/rpc/rpcb_prot.h rpcgen -h -o include/rpc/rpcb_prot.h include/rpc/rpcb_prot.x diff --git a/freebsd-userspace/rtems/generate_kvm_symbols b/freebsd-userspace/rtems/generate_kvm_symbols new file mode 100755 index 00000000..b26259c7 --- /dev/null +++ b/freebsd-userspace/rtems/generate_kvm_symbols @@ -0,0 +1,108 @@ +#! /bin/sh +# +# This file generates the symbol table for the kvm subsystem. The +# table is limited to the ones we believe are needed. + +symbols="" +while read sym +do + symbols="${symbols} ${sym}" +done <<EOF +_ifnet +_rtstat +_rt_tables +_mrtstat +_mfchashtbl +_viftable +_ipxpcb_list +_ipxstat +_spx_istat +_ddpstat +_ddpcb +_ngsocklist +_ip6stat +_icmp6stat +_ipsec4stat +_ipsec6stat +_pim6stat +_mrt6stat +_mf6ctable +_mif6table +_pfkeystat +_mbstat +_mbtypes +_nmbclusters +_nmbufs +_mbuf_hiwm +_clust_hiwm +_smp_cpus +_pagesize +_mb_statpcpu +_rttrash +_mbuf_lowm +_clust_lowm +_carpstats +_pfsyncstats +_ahstat +_espstat +_ipcompstat +_tcpstat +_udpstat +_ipstat +_icmpstat +_igmpstat +_pimstat +_tcbinfo +_udbinfo +_divcbinfo +_ripcbinfo +_unp_count +_unp_gencnt +_unp_dhead +_unp_shead +_rip6stat +_sctpstat +_mfctablesize +_arpstat +EOF + +cat <<EOF +/**** THIS FILE IS GENERATED BY A SCRIPT ****/ + +/* + * This file contains the known list of symbols for the kvm subsystem. + */ + +#include "kvm_private.h" +#include "stdio.h" + +/* + * The following is the known list of symbols that may be passed + * to the kvm family of calls. + */ + +EOF +for sym in ${symbols} +do + no_underscore=`echo $sym | sed -e 's/^_//' ` + echo "extern int ${no_underscore} __attribute((weak));" +done + +cat <<EOF +/* + * The following is the known list of symbols that may be passed + * to the kvm family of calls. + */ + +kvm_symval_t rtems_kvm_symbols[] = { +EOF +for sym in ${symbols} +do + no_underscore=`echo $sym | sed -e 's/^_//' ` + echo " { \"${sym}\", &${no_underscore} }," +done + +cat <<EOF + { "", NULL } +}; +EOF diff --git a/freebsd-userspace/rtems/kvm_private.h b/freebsd-userspace/rtems/kvm_private.h new file mode 100644 index 00000000..7655511a --- /dev/null +++ b/freebsd-userspace/rtems/kvm_private.h @@ -0,0 +1,13 @@ +#ifndef __KVM_PRIVATE_h +#define __KVM_PRIVATE_h + +#include <stdint.h> + +typedef struct { + const char *symbol; + uintptr_t value; +} kvm_symval_t; + +kvm_symval_t rtems_kvm_symbols[]; + +#endif diff --git a/freebsd-userspace/rtems/rtems-kvm.c b/freebsd-userspace/rtems/rtems-kvm.c new file mode 100644 index 00000000..e5e55374 --- /dev/null +++ b/freebsd-userspace/rtems/rtems-kvm.c @@ -0,0 +1,107 @@ +#include "port_before.h" +#include <sys/cdefs.h> +#include <kvm.h> +#include <nlist.h> +#include <assert.h> + +#include "kvm_private.h" + +char * +kvm_geterr( + kvm_t *kd +) +{ + return "KVM error"; + // return (kd->errbuf); +} + +kvm_t * +kvm_openfiles( + const char *uf, + const char *mf, + const char *sf __unused, + int flag, + char *errout +) +{ + return (kvm_t *)kvm_openfiles; +} + +int +kvm_nlist(kvm_t *kd, struct nlist *nl) +{ + struct nlist *p; + int nvalid; + int error; + kvm_symval_t *kvm; + + assert( kd != NULL ); + assert( nl != NULL ); + + nvalid = 0; +again: + for (p = nl; p->n_name && p->n_name[0]; ++p) { + if (p->n_type != N_UNDF) + continue; + if (p->n_name[0] != '_') + continue; + + for (kvm=rtems_kvm_symbols; kvm->symbol[0]; ++kvm) { + if (!strcmp(p->n_name, kvm->symbol)) { + p->n_type = N_TEXT; + p->n_other = 0; + p->n_desc = 0; + p->n_value = kvm->value; + if (kvm->value) { + ++nvalid; + printf("kvm: %s = %p\n", p->n_name, (void*)kvm->value); + } + break; + } + } + if (! kvm->symbol[0]) { + printf("kvm: did not know about %s\n", p->n_name); + } + } + + error = ((p - nl) - nvalid); + return (error); + +} + + +ssize_t +kvm_read(kd, kva, buf, len) + kvm_t *kd; + u_long kva; + void *buf; + size_t len; +{ + assert( kd != NULL ); + assert( buf != NULL ); + + if ( kva == 0 ) + return (-1); + +#ifdef __rtems__ + // printf( "%d from %p to %p\n", len, (void*)kva, buf); +#endif +#if 0 + /* + * Use a byte-wide copy to avoid alignment issues. + */ + { + unsigned char *s; + unsigned char *d; + size_t c; + + s = (void *)kva; + d = buf; + for (c=0; c<len ; c++) + *d++ = *s++; + } +#else + memcpy(buf, (void *)kva, len); +#endif + return len; +} |