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2000-12-06 Joel Sherrill <joel@OARcorp.com>

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* README: Updated to reflect status.
	* startup/linkcmds: Added .ctor and .dtor sections to no avail.
This commit is contained in:
Joel Sherrill
2000-12-06 15:43:35 +00:00
parent d95820d386
commit a9c55f5bb1
3 changed files with 51 additions and 19 deletions
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5
c/src/lib/libbsp/mips/jmr3904/ChangeLog
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@@ -1,3 +1,8 @@
2000-12-06 Joel Sherrill <joel@OARcorp.com>
* README: Updated to reflect status.
* startup/linkcmds: Added .ctor and .dtor sections to no avail.
2000-11-30 Joel Sherrill <joel@OARcorp.com>
* README: Updated to reflect current status. Misaligned reference

26
c/src/lib/libbsp/mips/jmr3904/README
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@@ -6,26 +6,20 @@ Simple BSP for the TX3904 simulator built into gdb.
Simulator Invocation
====================
The following is not 100% correct since it does not work. :)
The following is how the simulator is invoked.
target sim --board=jmr3904pal --memory-region 0x8800000,0x100000
target sim --board=jmr3904
GDB must be configured with a target like "tx39-rtems". Otherwise,
the simulator will not be built for the correct instruction
and peripheral set.
Status
======
+ printk() works and is being called from bsp_start as prove.
+ hello.exe locks up while running the global destructors. This almost
has to be a linkcmds issue.
+ There appears to be a compilation problem in _Thread_Handler_initialization
where _Thread_Ready_chain[1] is only 1 byte -- not 12 from
_Thread_Ready_chain[0]. I am throwing this to the RTEMS list
first before reporting it.
Made it to bsp_start
mips-core: 4 byte write to unaligned address 0x8803bb01 at 0x8800d83c
Program received signal SIGBUS, Bus error.
0x8800d83c in _Chain_Initialize_empty (the_chain=0x8803bb01)
at ../../../../../jmr3904/lib/include/rtems/score/chain.inl:222
222 the_chain->first = _Chain_Tail( the_chain );
(gdb) q
+ There is no clock tick device driver.
+ There is no timer device driver.

39
c/src/lib/libbsp/mips/jmr3904/startup/linkcmds
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@@ -32,6 +32,38 @@ SECTIONS
etext = .;
_etext = .;
}
.ctors :
{
/* gcc uses crtbegin.o to find the start of
the constructors, so we make sure it is
first. Because this is a wildcard, it
doesn't matter if the user does not
actually link against crtbegin.o; the
linker won't look for a file to match a
wildcard. The wildcard also means that it
doesn't matter which directory crtbegin.o
is in. */
KEEP (*crtbegin.o(.ctors))
/* We don't want to include the .ctor section from
from the crtend.o file until after the sorted ctors.
The .ctor section from the crtend file contains the
end of ctors marker and it must be last */
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
}
.dtors :
{
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
}
. = .;
.rdata : {
*(.rdata)
@@ -44,7 +76,6 @@ SECTIONS
*(.data)
*(.data.*)
*(.gnu.linkonce.d*)
CONSTRUCTORS
}
. = ALIGN(8);
_gp = . + 0x8000;
@@ -73,8 +104,10 @@ SECTIONS
*(.bss)
*(COMMON)
. = ALIGN (64);
_stack_init = .;
_stack_limit = .;
. += _StackSize;
__stack = .;
_stack_init = .;
_clear_end = .;
WorkspaceBase = .;
. += 512K; /* reserve some memory for workspace */
@@ -87,7 +120,7 @@ SECTIONS
/* Put starting stack in SRAM (8 Kb); this size is the same as the stack from
the original script (when everything was in SRAM). */
__stack = 0x8000A000;
/* __stack = 0x8000A000; */
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to
the beginning of the section so we begin them at 0. */