Thank you Jhon,
I found a very good description about the inline assembly for PPC
from Metrowerk's CodeWarrior. Apple's xcode accepts the syntax.
It's a real break-out of the restrictions of c.
It allows me to access all memory without alignment problems.
I even can access the code, implement
teletep wrote:
I found a very good description about the inline assembly for PPC
from Metrowerk's CodeWarrior. Apple's xcode accepts the syntax.
It's a real break-out of the restrictions of c.
It allows me to access all memory without alignment problems.
I even can access the code,
Thank you Paul,
answer to Q5:
To store the address of a label into cell n of array r:
void *labelptr=labelname; r[n]=labelptr;
To jump to the label: goto *labelptr;
This works with GNU-C compiler 3.3 but not with MetroWorks.
I think i need to use inline asm to solve the remaining questions.
I
Hi all,
This is a review of my topic: memory access.
Given:
long int r[100],m,n,o,v; // array and workvariables
char b[4];short int w[1];long int l[1]; // dummy arrays b w l
int ba=(int)b,wa= (int)w,la= (int)l; // array base addresses
RUN-TIME issues:
Each 4-byte cell of array r can contain
--- In c-prog@yahoogroups.com, Paul Herring [EMAIL PROTECTED]
wrote:
On Tue, Jul 1, 2008 at 8:05 PM, teletep [EMAIL PROTECTED] wrote:
for 1-byte access: index = memoryaddress - array-base
for 2-byte access: index = (memoryaddress - array-base)/2
for 4-byte access: index = (memoryaddress
On Thu, Jul 3, 2008 at 12:28 PM, teletep [EMAIL PROTECTED] wrote:
--- In c-prog@yahoogroups.com, Paul Herring [EMAIL PROTECTED]
wrote:
On Tue, Jul 1, 2008 at 8:05 PM, teletep [EMAIL PROTECTED] wrote:
for 1-byte access: index = memoryaddress - array-base
for 2-byte access: index =
On Mon, Jun 30, 2008 at 7:18 PM, teletep [EMAIL PROTECTED] wrote:
Thank you again Paul,
My compiler disregards a cast from int to pointer.
int v,f*; f=(int *)v; generates a Type mismatch error.
int v, *f;
f = v; // or
f = (int*)v; // depending on whether you want the address or the value of
Thank you Paul.
I agree that no solutions can be found using ansi C.
I figured out Q4. The answer is: r[n]=(int)r[m];
For Q5, my compiler refuses xxx where xxx is the name of a label.
I need some time to figure out Q6.
The first problem to solve the other questions concerns pointer
assignment.
Thank you again Paul,
My compiler disregards a cast from int to pointer.
int v,f*; f=(int *)v; generates a Type mismatch error.
Note: The questions are mine. Your answers will save me time.
--- In c-prog@yahoogroups.com, Paul Herring [EMAIL PROTECTED]
wrote:
On Mon, Jun 30, 2008 at 3:36 PM,
