Moving a 8051 project for EZUSB (Cypress FX2LP CY7C68013A) from SDCC version
2.3.8 to 2.7.0 encounted two linker problems:
1. wrongly counts the SFR space in the DATA memory size as a result
displayes "Insufficient space in data memory."
as\link\mcs51\lkmem.c line: 182
2. the program won't run if the start address of the code segment is
specified, the "_main" will be mapped to address 0x0000 instead of the "sdcc
statup function"
don't give "-b CSEG = 0x0000" for "aslink"
///////////////////////////// 1. SFR to DSEG bug //////////////////////
Name Start End Size Max
---------------- -------- -------- -------- --------
DATA 0x08 0xe5 222 128
---------------- -------- -------- -------- --------
TOTAL: 0x00 0xe5 230 128
*** ERROR: Insufficient space in data memory. 102 bytes short.
Stack starts at: 0x6e (sp set to 0x6d).
*** ERROR: Stack overlaps area 'DATA'
//////////////////////////////
/////////////////////////////////////////////////////////////////////////////////
as\link\mcs51\lkmem.c
line:182
/////////////////////
wrong:
/*If is not a register bank, bit, stack, or idata, then it should be
data*/
else if((xp->a_flag & (A_CODE|A_BIT|A_XDATA))==0)
{
if(xp->a_size)
{
Ram[6].Size+=xp->a_size;
if(xp->a_addr<Ram[6].Start) Ram[6].Start=xp->a_addr;
}
}
/////////////////////
good (copied from version 2.4.0):
else if ( EQ(xp->a_id, "DSEG") || EQ(xp->a_id, "OSEG") )
{
Ram[6].Size+=xp->a_size;
if(xp->a_addr<Ram[6].Start) Ram[6].Start=xp->a_addr;
}
//////////////////////////// 2. no CSEG for aslink
//////////////////////////
wrong:
Area Addr Size Decimal Bytes (Attributes)
-------------------------------- ---- ---- ------- ----- ------------
CSEG 0000 1CA7 = 7335. bytes
(REL,CON,CODE)
Value Global
-------- --------------------------------
0C:0000 _main
good:
Area Addr Size Decimal Bytes (Attributes)
-------------------------------- ---- ---- ------- ----- ------------
CSEG 00CC 1CA7 = 7335. bytes
(REL,CON,CODE)
Value Global
-------- --------------------------------
0C:00CC _main
--
Kovacs Laszlo Attila
Digilent RO
[EMAIL PROTECTED]
-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
Sdcc-user mailing list
Sdcc-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/sdcc-user
