1) Swapping to c++ instead of assembly implementations of several kernel APIs to avoid calling probably broken implementations of __EH_FRAME_?? macros
2) Commenting out otherwise unavoidable calls to __EH_FRAME_?? macros in uc_exe.cia. This is a temporary hack.
Both changes to see if they get past an early kernel panic in the Syborg ROM from the current build:
EH ERROR: no exception descriptor for address 0x801eb277
Thread efile.exe::Main Panic USER-EXEC 3
--- a/kernel/eka/euser/epoc/arm/uc_exe.cia Wed Jun 30 18:53:50 2010 +0100
+++ b/kernel/eka/euser/epoc/arm/uc_exe.cia Fri Jul 02 09:53:45 2010 +0100
@@ -61,11 +61,15 @@
asm("mov r11, sp "); // save stack pointer
+#if 0 /* IMK: Temorarily deleting these __EH_FRAME calls to discover if the suspect
+ GCCE definitions of them are behind a kernel panic. */
+
// The frame starts 84 bytes (up) from r11 i.e. CFA is r11 + 84
__EH_FRAME_ADDRESS(sp, 84) // Reg needs to be sp (=r11) here for gcce
// we can only restore callee-save values, but that's what we want if we 'leave'
// saved link is -8 bytes from CFA (= r11 + 0x24 + 0x20 + 0x8)
__EH_FRAME_SAVE1(lr, -8)
+#endif
// the other callee saves start at -48 from CFA (= r11 + 0x24)
#if 0
@@ -76,7 +80,9 @@
#if defined(__ARMCC__)
FRAME SAVE {r4-r11}, -48
#elif defined(__GCCE__)
+#if 0 /* IMK: see above */
__EH_FRAME_SAVE1(r4-r11,-48)
+#endif
#else
#error What compiler?
#endif
--- a/kernel/eka/include/cpudefs.h Wed Jun 30 18:53:50 2010 +0100
+++ b/kernel/eka/include/cpudefs.h Fri Jul 02 09:53:45 2010 +0100
@@ -245,10 +245,10 @@
#define __HEAP_MACHINE_CODED__
#define __REALS_MACHINE_CODED__
#define __COBJECT_MACHINE_CODED__
- #define __CACTIVESCHEDULER_MACHINE_CODED__
- #define __CSERVER_MACHINE_CODED__
-// #define __ARRAY_MACHINE_CODED__ IMK working around bug #2976
- #define __HUFFMAN_MACHINE_CODED__
+// #define __CACTIVESCHEDULER_MACHINE_CODED__ IMK: working around bug #1409
+// #define __CSERVER_MACHINE_CODED__ IMK: working around bug #1409
+// #define __ARRAY_MACHINE_CODED__ IMK: working around bug #2976, #2976
+// #define __HUFFMAN_MACHINE_CODED__ IMK: working around bug #1409
#if defined(__MARM_ARM4__) || defined(__MARM_ARMI__) || defined(__MARM_THUMB__) || defined(__MARM_ARMV4__) || defined(__MARM_ARMV5__)
#define __DES16_MACHINE_CODED_HWORD__
#endif