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List:       uclinux-dev
Subject:    Re: [uClinux-dev] [PATCH] flthdr: control the Blackfin L1 stack flag
From:       David McCullough <David_Mccullough () securecomputing ! com>
Date:       2009-05-22 0:22:30
Message-ID: 20090522002230.GA22836 () securecomputing ! com
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Jivin Mike Frysinger lays it down ...
> From: Bernd Schmidt <bernds_cb1@t-online.de>
> 
> Add -u/-U options to control the Blackfin L1 stack flag.
> 
> Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
> Signed-off-by: Mike Frysinger <vapier@gentoo.org>

Applied,

Thanks,
Davidm

> ---
> Not sure if we want to take this patch as is or try and generalize it as
> a "set arch bit" ?  or wait until another arch actually utilizes the arch
> bit for their own purpose ?
> 
>  flthdr.c |   15 +++++++++++++--
>  1 files changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/flthdr.c b/flthdr.c
> index cf6fe4d..90f9aa3 100644
> --- a/flthdr.c
> +++ b/flthdr.c
> @@ -51,7 +51,7 @@
>  char *program_name;
>  
>  static int print = 0, print_relocs = 0, docompress = 0, ramload = 0,
> -           stacksize = 0, ktrace = 0;
> +           stacksize = 0, ktrace = 0, l1stack = 0;
>  
>  /****************************************************************************/
>  
> @@ -106,6 +106,11 @@ process_file(char *ifile, char *ofile)
>  	else if (ktrace < 0)
>  		new_flags &= ~FLAT_FLAG_KTRACE;
>  	
> +	if (l1stack > 0)
> +		new_flags |= FLAT_FLAG_L1STK;
> +	else if (l1stack < 0)
> +		new_flags &= ~FLAT_FLAG_L1STK;
> +
>  	if (stacksize)
>  		new_stack = stacksize;
>  
> @@ -139,6 +144,8 @@ process_file(char *ifile, char *ofile)
>  				printf("Gzip-Data-Compressed ");
>  			if (old_flags & FLAT_FLAG_KTRACE)
>  				printf("Kernel-Traced-Load ");
> +			if (old_flags & FLAT_FLAG_L1STK)
> +				printf("L1-Scratch-Stack ");
>  			printf(")\n");
>  		}
>  
> @@ -317,6 +324,8 @@ usage(char *s)
>  	fprintf(stderr, "       -R      : do not RAM load\n");
>  	fprintf(stderr, "       -k      : kernel traced load (for debug)\n");
>  	fprintf(stderr, "       -K      : normal non-kernel traced load\n");
> +	fprintf(stderr, "       -u      : place stack in L1 scratchpad memory\n");
> +	fprintf(stderr, "       -U      : place stack in normal SDRAM memory\n");
>  	fprintf(stderr, "       -s size : stack size\n");
>  	fprintf(stderr, "       -o file : output-file\n"
>  	                "                 (default is to modify input file)\n");
> @@ -333,7 +342,7 @@ main(int argc, char *argv[])
>  
>  	program_name = argv[0];
>  
> -	while ((c = getopt(argc, argv, "pPdzZrRkKs:o:")) != EOF) {
> +	while ((c = getopt(argc, argv, "pPdzZrRuUkKs:o:")) != EOF) {
>  		switch (c) {
>  		case 'p': print = 1;                break;
>  		case 'P': print_relocs = 1;         break;
> @@ -344,6 +353,8 @@ main(int argc, char *argv[])
>  		case 'R': ramload = -1;             break;
>  		case 'k': ktrace = 1;               break;
>  		case 'K': ktrace = -1;              break;
> +		case 'u': l1stack = 1;              break;
> +		case 'U': l1stack = -1;             break;
>  		case 'o': ofile = optarg;           break;
>  		case 's':
>  			if (sscanf(optarg, "%i", &stacksize) != 1)
> -- 
> 1.6.3.1
> 
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-- 
David McCullough,  david_mccullough@securecomputing.com,  Ph:+61 734352815
McAfee - SnapGear  http://www.snapgear.com                http://www.uCdot.org
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