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malloc, DICE and IPC
by Tiago Jorge 30 Mar '05

30 Mar '05

hello... For my project, i'm now generating IPC stubs using DICE, so that i can i have my L4 server beeing call from L4Linux. But just for trying, i'm defining the interface, server, library, and a simple client only for testing. Here is my interface: ##################################################################### typedef struct WOO_Send_Retval_struct{ int error; [string]char *tag; }WOO_Send_Retval; typedef struct WOO_Receive_Retval_struct{ int error; [string]char *tag; }WOO_Receive_Retval; typedef struct WOO_Decide_Retval_struct{ int error; long order_num; char hash[20]; }WOO_Decide_Retval; interface WOO{ int init(void); WOO_Send_Retval send([in]long long starter_eid, [in, max_is(100), size_is(eids_num)]long long eids[], [in]int eids_num, [in]long msg_id, [in, string]char *hash); }; ##################################################################### i've built also a server: ##################################################################### /* * This file is auto generated by Dice-2.2.8. * * Implement the server templates here. * This file is regenerated with every run of 'dice -t ...'. * Move it to another location after changing to * keep your changes! */ #include <stdio.h> #include <l4/log/l4log.h> #include <l4/names/libnames.h> #include <stdlib.h> #include "WOO-server.h" char LOG_tag[9]="wooserver"; #ifdef __cplusplus extern "C" { #endif CORBA_int WOO_init_component(CORBA_Object _dice_corba_obj, CORBA_Server_Environment *_dice_corba_env) { int retval = 232144; return retval; } WOO_Send_Retval WOO_send_component(CORBA_Object _dice_corba_obj, CORBA_long_long starter_eid, const CORBA_long_long eids[100], CORBA_int eids_num, CORBA_long msg_id, const_CORBA_char_ptr hash, CORBA_Server_Environment *_dice_corba_env) { WOO_Send_Retval retval; LOG("i've got the call:: hash = %s\n", hash); retval.error = 34; retval.tag = "teststring"; LOG("return\n"); return retval; } int main(void){ if(names_register("wooserver")==0){ printf("Error registering at nameserver\n"); return 1; } WOO_server_loop(0); } #ifdef __cplusplus } #endif ##################################################################### and a libray to call the server: ##################################################################### #include <l4/names/libnames.h> #include <l4/log/l4log.h> #include <l4/env/errno.h> #include <l4/sys/consts.h> #include <l4/WOO_ipc/WOO_helper.h> #include <stdlib.h> static l4_threadid_t server_id = L4_INVALID_ID; static CORBA_Object server = &server_id; //! Request netserver id at nameserver static int check_server(void){ if (l4_is_invalid_id(server_id)){ LOG("inicio do programa\n"); if (!names_waitfor_name("wooserver",&server_id,10000)){ LOG("nao ha nome disponivel\n"); return 1; } } return 0; } //! woo_init int WOO_init(void){ CORBA_Environment env = dice_default_environment; int retval; LOG("chamaram o woo_init\n"); if (check_server()) return -L4_EINVAL; LOG("fiz o call\n"); retval = WOO_init_call(server, &env); LOG("a call retornou\n"); if(!env._p.ipc_error) return retval; LOG("ERROR\n"); return -env._p.ipc_error; } //! woo_send WOO_Send_Retval WOO_send(void){ CORBA_Environment env = dice_default_environment; WOO_Send_Retval retval; long long eids[100]; char tag[20] = "htkilfndtigkmnefktlo"; LOG("call woo send\n"); eids[0] = 213424; eids[1] = 2314124; eids[2] = 2143441; if (check_server()){ retval.error = -L4_EINVAL; return retval; } LOG("do the call\n"); retval=WOO_send_call(server, 12344512, eids, 3, 453445, tag, &env); LOG("call return\n"); if(!env._p.ipc_error) return retval; retval.error = -env._p.ipc_error; return retval; } ##################################################################### and a simple client: ##################################################################### #include <stdio.h> #include <l4/log/l4log.h> #include <l4/WOO_ipc/WOO_helper.h> char LOG_tag[9]="WOOclient"; int main(void){ int wooinitret; WOO_Send_Retval ret; LOG("client start\n"); wooinitret = WOO_init(); LOG("woo_init()\n"); LOG("WOO init returned %d\n", wooinitret); LOG("woo_send()\n"); ret = WOO_send(); LOG("returned send\n"); LOG("WOO send tag= %s\n", ret.tag); return 0; } ##################################################################### all ok, until i get it to run... There, he gives me an error (page fault) at the stubs, when unmarshalling the return value of the woo_send() call, more precisely, when allocating the string(tag) inside the return structure. the line is the following: _dice_return.tag = (CORBA_char_ptr)(_dice_corba_env->malloc)(_dice_tmp_offset); i've checked the string size tha comes from the server and it is correct... So... why is it page faulting?? thanks in advance Tiago Jorge

3 3

Tracking IPC calls
by Julian Grizzard 29 Mar '05

29 Mar '05

All, We are working with the Fiasco kernel on x86 arch. We are trying to track IPC messages between processes and maintain a buffer of them in a data structure inside the kernel, maybe buffer to a deticated user space server later. Any pointers as to the best place to add our hooks? We've been playing around with l4/kernel/fiasco/src/kern/shared/idt.cpp. Not sure if we are on the right track or not? Any suggestions? Thanks! -Julian

3 5

several questions...
by Tiago Jorge 22 Mar '05

22 Mar '05

hello again... i've been trying to broadcast a message through UDP and configure the ethernet card bue i've not sucedded yet... 1st question - have you ever tried to do that? 2nd question - i'm trying to set the broadcast adress directly in the NIC. i've tried to ioctl using the change parameter but haven't sucedded. this code works on linux but not with l4: int if_set_broadaddr(const char *ifn) { int return_val, fd = -1; struct ifreq ifr; /* points to one interface returned from ioctl */ struct in_addr *broadaddr; struct sockaddr_in sa; fd = socket (PF_INET, SOCK_DGRAM, 0); if (fd < 0) { LOG("Error opening socket for interface"); return -1; } strncpy (ifr.ifr_name, ifn, sizeof(ifr.ifr_name)); if (!inet_aton("10.10.255.255", &sa.sin_addr)) LOG("no valid IP address"); sa.sin_family = AF_INET; memcpy(&ifr.ifr_broadaddr, &sa, sizeof(struct sockaddr)); if (ioctl(fd, SIOCSIFBRDADDR, &ifr) < 0) LOG("ioctl(SIOCSIFBRDADDR) returns"); close (fd); return return_val; } is there any problem with the SIOCSIFBRDADDR flag? thanks in advance Tiago Jorge

3 7

Re: several questions...
by Tiago Jorge 21 Mar '05

21 Mar '05

Martin Pohlack wrote: >Tiago Jorge wrote: > >>>Maybe it is not transported correctly by l4vfs, please check >>>l4/pkg/l4vfs/lib/libc_backends/io/ioctl.c. >>> >>yep... thats true... it wasn't there. So i added and worked. >> >>just add in the switch statement that handles the the ifreq calls the >>following lines: >> >> case SIOCSIFBRDADDR: >> case SIOCGIFBRDADDR: >> >>and add in mini_ifconfig: >> >>if (!inet_aton("YOUR_BROADCAST_ADDR", &sa.sin_addr)) >> ERR_EXIT("no valid IP broadcast %s", "YOUR_BROADCAST_ADDR"); >> sa.sin_family = AF_INET; >> memcpy(&ifr.ifr_broadaddr, &sa, sizeof(struct sockaddr)); >> >> if ((err=ioctl(s, SIOCSIFBRDADDR, &ifr)) < 0) >> ERR_EXIT("ioctl(SIOCSIFBRDADDR) returns %d", err); >> > >Could you please send patches with some context (diff -u) so we are able >to identify the locations you want the code to be inserted to. > >Greets, >Martin > file l4/pkg/l4vfs/lib/libc_backends/io/ioctl.c --- oldioctl.c 2005-03-21 12:58:04.907581968 +0000 +++ ioctl.c 2005-03-21 12:58:02.712915608 +0000 @@ -84,7 +84,9 @@ case SIOCGIFADDR: case SIOCSIFNETMASK: case SIOCGIFNETMASK: - count = sizeof (struct ifreq); + case SIOCSIFBRDADDR: + case SIOCGIFBRDADDR: + count = sizeof (struct ifreq); break; case SIOCGIFCONF: count = sizeof(struct ifconf); file l4/pkg/flips/examples/mini_ifconfig/include/ifconfig.h --- ifconfig.h 2005-03-21 13:02:18.000106056 +0000 +++ oldifconfig.h 2005-03-21 13:02:02.723428464 +0000 @@ -9,4 +9,4 @@ extern int inet_aton(const char *cp, struct in_addr *addr); /** UTILITY: CONFIGURE NETWORK INTERFACE */ -extern void ifconfig(const char *ifname, const char *inaddr, const char *inmask, const char *baddr); +extern void ifconfig(const char *ifname, const char *inaddr, const char *inmask); file l4/pkg/flips/examples/mini_ifconfig/l4/ifconfig.c --- originalifcfg.c 2005-03-21 13:08:26.701054992 +0000 +++ ifconfig.c 2005-03-21 13:07:49.894650416 +0000 @@ -87,7 +87,7 @@ } /** UTILITY: CONFIGURE NETWORK INTERFACE */ -void ifconfig(const char *ifname, const char *inaddr, const char *inmask) +void ifconfig(const char *ifname, const char *inaddr, const char *inmask, const char *baddr) { int s, err; struct ifreq ifr; @@ -95,16 +95,19 @@ struct sockaddr_in *sap; strncpy(ifr.ifr_name, ifname, 16); - + + //open socket interface if ((s=socket(AF_INET, SOCK_DGRAM, 0)) < 0) ERR_EXIT("socket"); + //get flags if ((err=ioctl(s, SIOCGIFFLAGS, &ifr)) < 0) ERR_EXIT("ioctl(SIOCGIFFLAGS) returns %d", err); + print_flags(&ifr); /* switch ON */ - ifr.ifr_flags |= (IFF_UP|IFF_RUNNING); + ifr.ifr_flags |= (IFF_UP|IFF_RUNNING/*|IFF_BROADCAST*/); if ((err=ioctl(s, SIOCSIFFLAGS, &ifr)) < 0) ERR_EXIT("ioctl(SIOCSIFFLAGS) returns %d", err); if ((err=ioctl(s, SIOCGIFFLAGS, &ifr)) < 0) @@ -120,11 +123,13 @@ print_flags(&ifr); /* switch ON */ - ifr.ifr_flags |= (IFF_UP|IFF_RUNNING); + ifr.ifr_flags |= (IFF_UP|IFF_RUNNING/*|IFF_BROADCAST*/); if ((err=ioctl(s, SIOCSIFFLAGS, &ifr)) < 0) ERR_EXIT("ioctl(SIOCSIFFLAGS) returns %d", err); + if ((err=ioctl(s, SIOCGIFFLAGS, &ifr)) < 0) ERR_EXIT("ioctl(SIOCGIFFLAGS) returns %d", err); + print_flags(&ifr); /* set IFADDR */ @@ -137,11 +142,22 @@ ERR_EXIT("ioctl(SIOCSIFADDR) returns %d", err); memset(&ifr.ifr_addr, 0, sizeof(struct sockaddr)); ifr.ifr_addr.sa_family = AF_INET; + if ((err=ioctl(s, SIOCGIFADDR, &ifr)) < 0) ERR_EXIT("ioctl(SIOCGIFADDR) returns %d", err); sap = (struct sockaddr_in *)&ifr.ifr_addr; LOG("%s: inet %s\n", ifr.ifr_name, inet_ntoa(sap->sin_addr)); + /* set BROADADDR */ + if (!inet_aton(baddr, &sa.sin_addr)) + ERR_EXIT("no valid IP broadcast %s", baddr); + sa.sin_family = AF_INET; + memcpy(&ifr.ifr_broadaddr, &sa, sizeof(struct sockaddr)); + + if ((err=ioctl(s, SIOCSIFBRDADDR, &ifr)) < 0) + ERR_EXIT("ioctl(SIOCSIFBRDADDR) returns %d", err); + + /* set IFNETMASK */ if (!inet_aton(inmask, &sa.sin_addr)) ERR_EXIT("no valid IP network mask %s", inmask); @@ -152,11 +168,15 @@ ERR_EXIT("ioctl(SIOCSIFNETMASK) returns %d", err); memset(&ifr.ifr_addr, 0, sizeof(struct sockaddr)); ifr.ifr_addr.sa_family = AF_INET; + if ((err=ioctl(s, SIOCGIFNETMASK, &ifr)) < 0) ERR_EXIT("ioctl(SIOCGIFNETMASK) returns %d", err); sap = (struct sockaddr_in *)&ifr.ifr_addr; + print_flags(&ifr); LOG("%s: netmask %s", ifr.ifr_name, inet_ntoa(sap->sin_addr)); - + close(s); + } + file l4/pkg/flips/examples/mini_ifconfig/l4/main.c --- oldmain.c 2005-03-21 13:02:49.890258016 +0000 +++ main.c 2005-03-21 13:04:00.704492616 +0000 @@ -25,13 +25,13 @@ LOG("ifconfig"); if (argc < 4) { - LOG("usage:\n ifconfig <ifname> <inaddr> <inmask>"); - LOG("setting default value: lo 127.0.0.1 255.0.0.0"); - ifconfig("lo", "127.0.0.1", "255.0.0.0"); + LOG("usage:\n ifconfig <ifname> <inaddr> <inmask> <baddr>"); + LOG("setting default value: lo 127.0.0.1 255.0.0.0 127.255.255.255"); + ifconfig("lo", "127.0.0.1", "255.0.0.0", "127.255.255.255"); } else { - ifconfig(argv[1], argv[2], argv[3]); + ifconfig(argv[1], argv[2], argv[3], argv[4]); } /* register at names just that other programs can sync their startup */ it's here... according to the other issue i wait for an answer please :) thanks Tiago

2 1

FLIPS and UDP broadcast
by Tiago Jorge 17 Mar '05

17 Mar '05

hello again to you all... i'm trying to broadcast through a LAN using the socket interface provided by FLIPS with a small test program, here is the code: ################################################## #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <string.h> #include <netdb.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <l4/log/l4log.h> #define PORTNUMBER 5824 /*Sets the socket to non-blocking*/ void unblock_socket(int sd); void unblock_socket(int sd) { int flags; /* get current socket flags */ if ((flags=fcntl(sd, F_GETFL)) == -1) { LOG("GETFL"); exit(1); } /* set socket to non-blocking */ flags |= O_NDELAY; if (fcntl(sd, F_SETFL, flags) == -1) { LOG("SETFL"); exit(1); } } int main (int argc, char** argv) { int socketDesc; /* Socket Descriptor */ int addrLength; int i; struct sockaddr_in destinationAddr, myAddr, responseAddr; struct hostent *hostNameBufPtr; char outMessageBuf[128]; char inMessageBuf[128]; int trueFlag = 0x1; int size_sent = 0; int recvfrom_error; /* Create socket from which to send */ if ((socketDesc = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { LOG("open error on socket"); exit(1); } /* BIND the socket on our end to any available port (i.e. leave it up to the system to assign a port (used for replys */ myAddr.sin_family = AF_INET; myAddr.sin_addr.s_addr = htonl(INADDR_ANY); myAddr.sin_port = htons(PORTNUMBER); /* The zero says bind to any port */ if (bind(socketDesc, (struct sockaddr *) &myAddr, sizeof(myAddr)) < 0) { perror("bind error"); exit(1); } /* And build BROADCAST address */ destinationAddr.sin_family = AF_INET; destinationAddr.sin_addr.s_addr = htonl(INADDR_BROADCAST); destinationAddr.sin_port = htons(PORTNUMBER); /* Set the socket to permit multicasts on the local LAN */ if (setsockopt(socketDesc, SOL_SOCKET, SO_BROADCAST, &trueFlag, sizeof(trueFlag)) != 0) { LOG("setsockopt error"); exit(1); } //COMMENTED //unblock_socket(socketDesc); for(i=0; i<2; i++){ /* Broadcast message */ sprintf(outMessageBuf,"%d", i); if ((size_sent = sendto(socketDesc, outMessageBuf, strlen(outMessageBuf)+1, 0, (struct sockaddr *)&destinationAddr, sizeof(destinationAddr))) < 0) { LOG("socket send error"); exit(1); } } LOG("size sent: %d\n", size_sent); return 0; } ################################################## i've tried out the mini_http example with mini_ifconfig and works out fine with this menu.lst: title Testes root (hd0,0) kernel /home/tiago/fiasco_builddir/rmgr -sigma0 modaddr 0x02000000 module /home/tiago/fiasco_builddir/main -nokdb -nowait -serial_esc -comspeed 115200 -comport 1 module /home/tiago/fiasco_builddir/sigma0 module /home/tiago/fiasco_builddir/names module /home/tiago/fiasco_builddir/dm_phys module /home/tiago/fiasco_builddir/l4io module /home/tiago/fiasco_builddir/name_server module /home/tiago/fiasco_builddir/flips-lxdrv module /home/tiago/fiasco_builddir/mini_ifconfig eth0 10.10.5.197 255.255.0.0 module /home/tiago/fiasco_builddir/mini_http but when i add my program, replacing mini_http, built with the same libs and configs as mini_http, gives me an error when sends the packet. LOG("socket send error"); am i doing this right? does flips support broadcast UDP? i've hacked mini_ifconfig and i see that the eth0 flags are ok for broadcasting... what am i doing wrong? thanks in advance Tiago

1 0

Page Fault
by Tiago Jorge 16 Mar '05

16 Mar '05

Thank you for your prompt answers in my earlier issue. i don't know where i saw the underscore :). Now i'm having another issue. I'm having a page fault at my program because is trying to acess page 0. its a simple test program that starts an object that in the constructor starts a thread that uses FLIPS to have network. at the makefile i'm realocatting the program so i think the problem doesn't come from here. this is my Log: ####################################################### Welcome to Fiasco(ia32)! L4(v2)/x86 microkernel (C) 1998-2005 TU Dresden Rev: Wed Feb 2 12:05:33 2005 compiled with gcc 2.95 for Intel Pentium 4 Performance-critical config option(s) detected: CONFIG_NDEBUG is off CONFIG_NO_FRAME_PTR is off Found VMware: Using (normal) fully nested PIC mode Using the PIT (i8254) on IRQ 0 for scheduling Absolute KIP Syscalls using: Sysenter CPU: GenuineIntel (F:2:8:9) Model: Pentium 4 (Northwood/Prestonia) at 2793 MHz 128 Entry I TLB (4K or 4M pages) 64 Entry D TLB (4k or 4M pages) 12K µ-ops T Cache (8-way associative) 8 KB L1 D Cache (4-way associative, 64 bytes per line) 512 KB L2 U Cache (8-way associative, 64 bytes per line) Freeing init code/data: 20480 bytes (5 pages) SIGMA0: Hello! Found Fiasco: KIP syscalls: yes. Allocated 116kB for maintenance structures. RMGR: Stage2 running on Fiasco bootloader loaded 7 modules at 02073000-02889a65 total RAM size = 195134 KB (reported by bootloader) received 178096 KB RAM from sigma0 828 KB reserved for RMGR received no I/O ports attached irqs = [ <!0> 1 <!2> 3 <!4> 5 6 7 8 9 a b c d e f ] RMGR: Starting tasks. #05: loading "(nd)/names" from 02073000-0207c174 to [ 00200000-00206f60 00207000-00210000 ] starting at entry 00200000 via trampoline page code 0006d150 #06: loading "(nd)/dm_phys" from 0207d000-02094174 to [ 01500000-015143a0 01515000-0151e000 ] starting at entry 01500000 via trampoline page code 0006e154 #07: loading "(nd)/l4io" from 02095000-0225e1a6 to [ 00b70000-00b92cf6 00b93000-00bc6000 ] starting at entry 00b70000 via trampoline page code 0006f150 symbols at 0af55000-0af8c000 (220kB), lines at 0af3e000-0af55000 (92kB) #08: loading "(nd)/name_server" from 0225f000-0230478a to [ 0181c000-01838fa3 01839000-01863e40 ] starting at entry 0181c000 via trampoline page code 00070158 symbols at 0af38000-0af3e000 (24kB), lines at 0af23000-0af38000 (84kB) #09: loading "(nd)/flips" from 02305000-027155c4 to [ 01900000-01981cd6 01982000-019a4000 ] starting at entry 01900000 via trampoline page code 00071150 symbols at 0af15000-0af23000 (56kB), lines at 0aeb5000-0af15000 (384kB) #0a: loading "(nd)/mini_ifconfig" from 02716000-027c3ed0 to [ 01a80000-01a9b6d4 01a9c000-01ac48c0 ] starting at entry 01a80000 via trampoline page code 00072158 symbols at 0aeb0000-0aeb5000 (20kB), lines at 0ae9c000-0aeb0000 (80kB) #0b: loading "(nd)/failuredetector" from 027c4000-02889a64 to [ 01d00000-01d1ca74 01d1d000-01d45780 ] starting at entry 01d00000 via trampoline page code 0007315c symbols at 0ae97000-0ae9c000 (20kB), lines at 0ae82000-0ae97000 (84kB) names | Fiasco detected, registering thread names at kernel *minifcfg| main(): ifconfig *minifcfg| main(): usage: *minifcfg| ifconfig <ifname> <inaddr> <inmask> *minifcfg| main(): setting default value: lo 127.0.0.1 255.0.0.0 *io | OSKit support: using 1024KB at 0x00180000 as heap *flips-0 | OSKit support: using 1024KB at 0x00180000 as heap *flips-0 | Starting FLIPS server *io | PCI: Using configuration type 1 *io | PCI: Probing PCI hardware *io | PCI: Probing PCI hardware (bus 00) *io | PCI: Cannot allocate resource region 4 of device 00:07.1 *io | Limiting direct PCI/PCI transfers. *io | 00000000-ffffffff : PCI mem *io | f4000000-f7ffffff : Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host br *io : idge *io | f8000000-f800001f : BusLogic BT-946C (BA80C30) [MultiMaster 10] *io | f9000000-f9ffffff : PCI device 15ad:0405 (VMWare Inc) *io | fa000000-faffffff : PCI device 15ad:0405 (VMWare Inc) *io | 0000-ffff : PCI IO *io | 0cf8-0cff : PCI conf1 *io | 1000-103f : Intel Corp. 82371AB/EB/MB PIIX4 ACPI *io | 1040-105f : Intel Corp. 82371AB/EB/MB PIIX4 ACPI *io | 1060-107f : BusLogic BT-946C (BA80C30) [MultiMaster 10] *io | 1080-10ff : Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] *io | 1400-140f : PCI device 15ad:0405 (VMWare Inc) *io | 1410-141f : Intel Corp. 82371AB/EB/MB PIIX4 IDE *io | omega0/server/src/irq_threads.c:522:attach_irqs(): *io | available irqs=[ <!0> 1 <!2> 3 <!4> 5 6 7 8 9 a b c d e f ] *flips-0 | l4dde_mm_init(): Using ... *flips-0 | 640 kB at 0x00280000 (vmem) *flips-0 | 1024 kB in 1 regions (kmem) *flips-0 | Initializing RT netlink socket *flips-0 | lo: I'm up now. *flips-0 | NET4: Linux TCP/IP 1.0 for NET4.0 *flips-0 | IP Protocols: ICMP, UDP, TCP *flips-0 | IP: routing cache hash table of 128 buckets, 3Kbytes *flips-0 | si_meminfo(): called (1) *flips-0 | TCP: Hash tables configured (established 128 bind 170) *flips-0 | CORBA_alloc(): size=1024, 1 pointers used *flips-0 | CORBA_alloc(): got block at 0x00180004 *flips-0 | CORBA_alloc(): size=1024, 2 pointers used *flips-0 | CORBA_alloc(): got block at 0x0018040c *flips-0 | flips_session_thread(): Flips(session_thread): new thread_id 9.8 *flips-0 | *flips-0 | CORBA_alloc(): size=1024, 3 pointers used *flips-0 | CORBA_alloc(): got block at 0x00180814 *flips-0 | CORBA_alloc(): size=1024, 4 pointers used *flips-0 | CORBA_alloc(): got block at 0x00180c1c *minifcfg| print_flags(): FLAGS for lo: LOOPBACK *minifcfg| print_flags(): FLAGS for lo: UP LOOPBACK RUNNING *minifcfg| print_flags(): FLAGS for lo: LOOPBACK *minifcfg| print_flags(): FLAGS for lo: UP LOOPBACK RUNNING *minifcfg| ifconfig(): lo: inet 127.0.0.1 *minifcfg| *minifcfg| ifconfig(): lo: netmask 255.0.0.0 *minifcfg| main(): register at names *minifcfg| main(): eternal sleep *flips-0 | flips_session_thread(): Flips(session_thread): new thread_id 9.9 *flips-0 | *flips-0 | CORBA_alloc(): size=1024, 5 pointers used *flips-0 | CORBA_alloc(): got block at 0x00181024 *flips-0 | CORBA_alloc(): size=1024, 6 pointers used *flips-0 | CORBA_alloc(): got block at 0x0018142c *failured| L4RM: [PF] write at 0x00000000, eip 01d00249, src B.03 *failured| [B.0] l4rm/lib/src/pagefault.c:78:__unknown_pf(): *failured| unhandled page fault --------------------------------------------------------EIP: 01d0c765 PANIC ####################################################### here is my code: #include "WOO_vector.h" #include "FailureDetector.h" #include <l4/lock/lock.h> #include <l4/names/libnames.h> int main(){ vector<int> grupo; l4lock_t lock = L4LOCK_UNLOCKED; grupo.push_back(1); grupo.push_back(2); grupo.push_back(3); FailureDetector fd(1, 500000, &grupo, &lock); } how can i avoid this problem? thank you Tiago

2 8

C++ templates
by Tiago Jorge 16 Mar '05

16 Mar '05

hello again... Could somebody tell me if to use C++ custoum templates i must use the stdlibc++? thanks in advance Tiago J.

4 9

Problem loading a module added to drops-rd
by Leon Brits 14 Mar '05

14 Mar '05

Hi all, I added a kernel module to the drops-rd ramdisk, but when I 'insmod' it I get the error: Floating point exception. I did enable kernel loadable modules without versions in the L4Linux kernel config. (Using l4linux-2.4.28) Any ideas why - and how to resolve this? Thanks Leon

3 2

stdlibc++ and exceptions
by Tiago Jorge 10 Mar '05

10 Mar '05

is there any way of turning off the exceptions in the port of the C++ lib? or just do it in the STL? thanks Tiago

1 0

how to port stdc++ ?
by Andrushka 09 Mar '05

09 Mar '05

I'm trying to port by self libstdc++. Please say me what is necessary steps compleat to build libstdc++.a ? I'm explored next: 1. Download stdc++ from GNU archives. 2. Modify config.sub (add drops target) 3. Modify configure add *-*-drops*) os_include_dir="os/generic" ;; 4. run ./configure --target=drops --host=i486-pc-linux 5. run make make all-target-libiberty all-target-libstdc++-v3 Please! Write in steps what are you doing to succesful build libstdc++ for L4Env!!! What changes and additions you made to raw libstdc++ sources? Maybe there are any guide ? Thanks.

2 1