diff options
| author | Gwenolé Beauchesne <gbeauchesne@mandriva.org> | 2003-06-04 18:44:09 +0000 |
|---|---|---|
| committer | Gwenolé Beauchesne <gbeauchesne@mandriva.org> | 2003-06-04 18:44:09 +0000 |
| commit | 4cd6a4a5d7e49d54d53dcf4a6f3393d50bd88e8b (patch) | |
| tree | acd4001a266a8713495af7f1b2102b61e67113b0 /mdk-stage1/dietlibc/profiling/PORTING | |
| parent | 71b111ec6c4671667a19c6fbe0023d33422535d7 (diff) | |
| download | drakx-backup-do-not-use-4cd6a4a5d7e49d54d53dcf4a6f3393d50bd88e8b.tar drakx-backup-do-not-use-4cd6a4a5d7e49d54d53dcf4a6f3393d50bd88e8b.tar.gz drakx-backup-do-not-use-4cd6a4a5d7e49d54d53dcf4a6f3393d50bd88e8b.tar.bz2 drakx-backup-do-not-use-4cd6a4a5d7e49d54d53dcf4a6f3393d50bd88e8b.tar.xz drakx-backup-do-not-use-4cd6a4a5d7e49d54d53dcf4a6f3393d50bd88e8b.zip | |
Import dietlibc 0.22 + other fixes for AMD64
Diffstat (limited to 'mdk-stage1/dietlibc/profiling/PORTING')
| -rw-r--r-- | mdk-stage1/dietlibc/profiling/PORTING | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/profiling/PORTING b/mdk-stage1/dietlibc/profiling/PORTING new file mode 100644 index 000000000..c3fc5eba7 --- /dev/null +++ b/mdk-stage1/dietlibc/profiling/PORTING @@ -0,0 +1,25 @@ + Porting to other platforms + + ... is easy. Just create an mcount.S in the $ARCH + directory (eg. dietlibc/i386) which includes a + function (called "mcount") that: + + 1.) saves ALL registers that are freely usable + and which might be used by __mcount(). + 2.) loads the instruction pointer (PC) from the + function that called mcount, and the function + which called the function, that called mcount + into the first two argument registers (or push + them on the stack - depending on the processor- + architecture). + 3.) call __mcount. + 4.) restore the registers saved in 1) + + Then You need a macro called PC in <asm/sigcontext.h> + which extracts the (instruction pointer / program + counter) from a sigcontext structure (eg. on i386 this + would be ctx.eip). + + $ARCH/start.S must also be modified to call monitor + with the offset of .text and _etext as parameters. + |