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patches/ltrace/0.5.2/120-debian-ltrace-0.5.2-2.patch
author Michael Hope <michael.hope@linaro.org>
Wed Oct 19 15:27:32 2011 +1300 (2011-10-19)
changeset 2739 f320e22f2cba
permissions -rw-r--r--
arch: add softfp support

Some architectures support a mixed hard/soft floating point, where
the compiler emits hardware floating point instructions, but passes
the operands in core (aka integer) registers.

For example, ARM supports this mode (to come in the next changeset).

Add support for softfp cross compilers to the GCC and GLIBC
configuration. Needed for Ubuntu and other distros that are softfp.

Signed-off-by: Michael Hope <michael.hope@linaro.org>
[yann.morin.1998@anciens.enib.fr: split the original patch]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 --- ltrace-0.5.2.orig/TODO

     2 +++ ltrace-0.5.2/TODO

     3 @@ -37,3 +37,4 @@

     4  * debug: change "-d" option to be something like "-d elf,events", or "-d breakpoints"

     5  * Find out if a process is sharing memory with its parent?

     6  * When using -p, find out if that process is sharing memory with other procs

     7 +* After a clone(), syscalls may be seen as sysrets in s390 (see trace.c:syscall_p())

     8 --- ltrace-0.5.2.orig/process_event.c

     9 +++ ltrace-0.5.2/process_event.c

    10 @@ -170,7 +170,7 @@

    11  			enable_breakpoint(proc->pid, proc->breakpoint_being_enabled);

    12  			proc->breakpoint_being_enabled = NULL;

    13  		}

    14 -		if (proc->parent->state == STATE_ATTACHED && options.follow) {

    15 +		if (options.follow) {

    16  			proc->state = STATE_ATTACHED;

    17  		} else {

    18  			proc->state = STATE_IGNORED;

    19 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/ppc/trace.c

    20 +++ ltrace-0.5.2/sysdeps/linux-gnu/ppc/trace.c

    21 @@ -50,9 +50,9 @@

    22  			*sysnum =

    23  			    (int)ptrace(PTRACE_PEEKUSER, proc->pid,

    24  					sizeof(long) * PT_R0, 0);

    25 -			if (proc->callstack_depth > 0

    26 -			    && proc->callstack[proc->callstack_depth -

    27 -					       1].is_syscall) {

    28 +			if (proc->callstack_depth > 0 &&

    29 +					proc->callstack[proc->callstack_depth - 1].is_syscall &&

    30 +					proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    31  				return 2;

    32  			}

    33  			return 1;

    34 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/i386/trace.c

    35 +++ ltrace-0.5.2/sysdeps/linux-gnu/i386/trace.c

    36 @@ -32,7 +32,8 @@

    37  		*sysnum = ptrace(PTRACE_PEEKUSER, proc->pid, 4 * ORIG_EAX, 0);

    38  

    39  		if (proc->callstack_depth > 0 &&

    40 -		    proc->callstack[proc->callstack_depth - 1].is_syscall) {

    41 +				proc->callstack[proc->callstack_depth - 1].is_syscall &&

    42 +				proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    43  			return 2;

    44  		}

    45  

    46 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/ia64/trace.c

    47 +++ ltrace-0.5.2/sysdeps/linux-gnu/ia64/trace.c

    48 @@ -106,8 +106,8 @@

    49  		if (insn == 0x1000000000 || insn == 0x1ffffffffff) {

    50  			*sysnum = r15;

    51  			if (proc->callstack_depth > 0 &&

    52 -			    proc->callstack[proc->callstack_depth -

    53 -					    1].is_syscall) {

    54 +				proc->callstack[proc->callstack_depth - 1].is_syscall &&

    55 +				proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    56  				return 2;

    57  			}

    58  			return 1;

    59 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/m68k/trace.c

    60 +++ ltrace-0.5.2/sysdeps/linux-gnu/m68k/trace.c

    61 @@ -36,9 +36,8 @@

    62  		if (*sysnum >= 0) {

    63  			depth = proc->callstack_depth;

    64  			if (depth > 0 &&

    65 -			    proc->callstack[depth - 1].is_syscall &&

    66 -			    proc->callstack[depth - 1].c_un.syscall ==

    67 -			    *sysnum) {

    68 +					proc->callstack[depth - 1].is_syscall &&

    69 +					proc->callstack[depth - 1].c_un.syscall == *sysnum) {

    70  				return 2;

    71  			} else {

    72  				return 1;

    73 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/alpha/trace.c

    74 +++ ltrace-0.5.2/sysdeps/linux-gnu/alpha/trace.c

    75 @@ -36,8 +36,9 @@

    76  			return 0;

    77  		*sysnum =

    78  		    ptrace(PTRACE_PEEKUSER, proc->pid, 0 /* REG_R0 */ , 0);

    79 -		if (proc->callstack_depth > 0

    80 -		    && proc->callstack[proc->callstack_depth - 1].is_syscall) {

    81 +		if (proc->callstack_depth > 0 &&

    82 +		    proc->callstack[proc->callstack_depth - 1].is_syscall &&

    83 +			proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    84  			return 2;

    85  		}

    86  		if (*sysnum >= 0 && *sysnum < 500) {

    87 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/sparc/trace.c

    88 +++ ltrace-0.5.2/sysdeps/linux-gnu/sparc/trace.c

    89 @@ -33,9 +33,9 @@

    90  		insn = ptrace(PTRACE_PEEKTEXT, proc->pid, ip, 0);

    91  		if ((insn & 0xc1f8007f) == 0x81d00010) {

    92  			*sysnum = ((proc_archdep *) proc->arch_ptr)->regs.r_g1;

    93 -			if ((proc->callstack_depth > 0)

    94 -			    && proc->callstack[proc->callstack_depth -

    95 -					       1].is_syscall) {

    96 +			if (proc->callstack_depth > 0 &&

    97 +					proc->callstack[proc->callstack_depth - 1].is_syscall &&

    98 +					proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    99  				return 2;

   100  			} else if (*sysnum >= 0) {

   101  				return 1;

   102 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/mipsel/trace.c

   103 +++ ltrace-0.5.2/sysdeps/linux-gnu/mipsel/trace.c

   104 @@ -60,33 +60,34 @@

   105  int

   106  syscall_p(Process *proc, int status, int *sysnum) {

   107  	if (WIFSTOPPED(status)

   108 -	    && WSTOPSIG(status) == (SIGTRAP | proc->tracesysgood)) {

   109 -       /* get the user's pc (plus 8) */

   110 -       long pc = (long)get_instruction_pointer(proc);

   111 -       /* fetch the SWI instruction */

   112 -       int insn = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 4, 0);

   113 -       int num = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 8, 0);

   114 -       

   115 -/*

   116 -  On a mipsel,  syscall looks like:

   117 -  24040fa1    li v0, 0x0fa1   # 4001 --> _exit syscall

   118 -  0000000c    syscall

   119 - */

   120 -      if(insn!=0x0000000c){

   121 -          return 0;

   122 -      }

   123 -

   124 -      *sysnum = (num & 0xFFFF) - 4000;

   125 -      /* if it is a syscall, return 1 or 2 */

   126 -      if (proc->callstack_depth > 0 &&

   127 -          proc->callstack[proc->callstack_depth - 1].is_syscall) {

   128 -          return 2;

   129 -      }

   130 -      

   131 -      if (*sysnum >= 0) {

   132 -          return 1;

   133 -      }

   134 -   }

   135 +			&& WSTOPSIG(status) == (SIGTRAP | proc->tracesysgood)) {

   136 +		/* get the user's pc (plus 8) */

   137 +		long pc = (long)get_instruction_pointer(proc);

   138 +		/* fetch the SWI instruction */

   139 +		int insn = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 4, 0);

   140 +		int num = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 8, 0);

   141 +

   142 +		/*

   143 +		   On a mipsel,  syscall looks like:

   144 +		   24040fa1    li v0, 0x0fa1   # 4001 --> _exit syscall

   145 +		   0000000c    syscall

   146 +		 */

   147 +		if(insn!=0x0000000c){

   148 +			return 0;

   149 +		}

   150 +

   151 +		*sysnum = (num & 0xFFFF) - 4000;

   152 +		/* if it is a syscall, return 1 or 2 */

   153 +		if (proc->callstack_depth > 0 &&

   154 +				proc->callstack[proc->callstack_depth - 1].is_syscall &&

   155 +				proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

   156 +			return 2;

   157 +		}

   158 +

   159 +		if (*sysnum >= 0) {

   160 +			return 1;

   161 +		}

   162 +	}

   163  	return 0;

   164  }

   165  /**

   166 @@ -119,34 +120,34 @@

   167  */

   168  long

   169  gimme_arg(enum tof type, Process *proc, int arg_num, arg_type_info *info) {

   170 -    long ret;

   171 -    debug(2,"type %d arg %d",type,arg_num);

   172 -    if (type == LT_TOF_FUNCTION || type == LT_TOF_SYSCALL){

   173 -        if(arg_num <4){

   174 -            ret=ptrace(PTRACE_PEEKUSER,proc->pid,off_a0+arg_num,0);

   175 -            debug(2,"ret = %#lx",ret);

   176 -            return ret;

   177 -        } else {

   178 -            // If we need this, I think we can look at [sp+16] for arg_num==4.

   179 -            CP;

   180 -            return 0;

   181 -        }

   182 -    } 

   183 -    if(arg_num>=0){

   184 -       fprintf(stderr,"args on return?");

   185 -    }

   186 -    if(type == LT_TOF_FUNCTIONR) {

   187 -        return  ptrace(PTRACE_PEEKUSER,proc->pid,off_v0,0);

   188 -    }

   189 -    if (type == LT_TOF_SYSCALLR) {

   190 -        unsigned a3=ptrace(PTRACE_PEEKUSER, proc->pid,off_a3,0);

   191 -        unsigned v0=ptrace(PTRACE_PEEKUSER, proc->pid,off_v0,0);

   192 -        if(!a3){

   193 -            return v0;

   194 -        }

   195 -        return -1;

   196 -    }

   197 -    fprintf(stderr, "gimme_arg called with wrong arguments\n");

   198 +	long ret;

   199 +	debug(2,"type %d arg %d",type,arg_num);

   200 +	if (type == LT_TOF_FUNCTION || type == LT_TOF_SYSCALL){

   201 +		if(arg_num <4){

   202 +			ret=ptrace(PTRACE_PEEKUSER,proc->pid,off_a0+arg_num,0);

   203 +			debug(2,"ret = %#lx",ret);

   204 +			return ret;

   205 +		} else {

   206 +			// If we need this, I think we can look at [sp+16] for arg_num==4.

   207 +			CP;

   208 +			return 0;

   209 +		}

   210 +	} 

   211 +	if(arg_num>=0){

   212 +		fprintf(stderr,"args on return?");

   213 +	}

   214 +	if(type == LT_TOF_FUNCTIONR) {

   215 +		return  ptrace(PTRACE_PEEKUSER,proc->pid,off_v0,0);

   216 +	}

   217 +	if (type == LT_TOF_SYSCALLR) {

   218 +		unsigned a3=ptrace(PTRACE_PEEKUSER, proc->pid,off_a3,0);

   219 +		unsigned v0=ptrace(PTRACE_PEEKUSER, proc->pid,off_v0,0);

   220 +		if(!a3){

   221 +			return v0;

   222 +		}

   223 +		return -1;

   224 +	}

   225 +	fprintf(stderr, "gimme_arg called with wrong arguments\n");

   226  	return 0;

   227  }

   228  

   229 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/x86_64/trace.c

   230 +++ ltrace-0.5.2/sysdeps/linux-gnu/x86_64/trace.c

   231 @@ -41,7 +41,8 @@

   232  		*sysnum = ptrace(PTRACE_PEEKUSER, proc->pid, 8 * ORIG_RAX, 0);

   233  

   234  		if (proc->callstack_depth > 0 &&

   235 -		    proc->callstack[proc->callstack_depth - 1].is_syscall) {

   236 +				proc->callstack[proc->callstack_depth - 1].is_syscall &&

   237 +				proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

   238  			return 2;

   239  		}

   240
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