starred/Mu
1
0
Fork 0
mirror of https://github.com/libretro/Mu.git synced 2026-09-23 23:25:04 +00:00
Code Issues 18 Packages Projects Releases 2 Wiki Activity

Ok, ARM blobs seem to be compiling

Browse Source
This commit is contained in:
meepingsnesroms
2019-01-09 11:47:17 -08:00
parent e885942603
commit def07b53d0
8 changed files with 51 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
.gitignore vendored
View File

@@ -21,8 +21,8 @@
/tools/palm/muExpansionDriver/muExpDriver
/tools/palm/muExpansionDriver/muExpDriver-sections.s
/tools/palm/muExpansionDriver/muExpDriver-sections.ld
/tools/palm/muExpansionDriver/asmSrcs/*.L68
/tools/palm/muExpansionDriver/asmSrcs/*.S68
/tools/palm/muExpansionDriver/armExit
/tools/palm/muExpansionDriver/armCall68k
/tools/desktop/build-BufferGraphViewer-*
/tools/desktop/build-MakePalmIcon-*
/tools/desktop/export16BitImageProperly/convert

5
tools/palm/muExpansionDriver/armCall68k.func
View File

@@ -1,5 +0,0 @@
LDR R4, 1
MOV R5, R1
MOV R6, R2
MOV R7, R3
HYPERCALL

2
tools/palm/muExpansionDriver/armExit.func
View File

@@ -1,2 +0,0 @@
LDR R4, 0
HYPERCALL

26
tools/palm/muExpansionDriver/armSrc/armCall68k.c Normal file
View File

@@ -0,0 +1,26 @@
#include <Standalone.h>
#include <stdint.h>
STANDALONE_CODE_RESOURCE_ID(1);
void start(void){
register uint32_t r1 asm("r1");
register uint32_t r2 asm("r2");
register uint32_t r3 asm("r3");
register uint32_t r4 asm("r4");
register uint32_t r5 asm("r5");
register uint32_t r6 asm("r6");
register uint32_t r7 asm("r7");
r4 = 1;
r5 = r1;
r6 = r2;
r7 = r3;
/*hypercall*/
asm(".long 0xF7BBBBBB");
/*return value of the 68k call is put in r0 by the PceNativeCall implementation*/
}

16
tools/palm/muExpansionDriver/armSrc/armExit.c Normal file
View File

@@ -0,0 +1,16 @@
#include <Standalone.h>
#include <stdint.h>
STANDALONE_CODE_RESOURCE_ID(0);
void start(void){
register uint32_t r4 asm("r4");
r4 = 0;
/*hypercall*/
asm(".long 0xF7BBBBBB");
}

1
tools/palm/muExpansionDriver/armSrc/readme.txt Normal file
View File

@@ -0,0 +1 @@
These are standalone code resources compiled in ARM mode, no global variables or accessing 68k code is allowed.

4
tools/palm/muExpansionDriver/devNotes.txt
View File

@@ -1,5 +1 @@
This project can't use global variables, its executed without being launched so writing to globals will corrupt the currently running application, reading will just retrieve random numbers or crash because of invalid access.
*.func files are binary blobs containing ASM code to perform sensitive functions:
armCall68k.func is ARM asm that sets up a path back to 68k code without ending ARM execution
armExit.func is ARM asm that terminates ARM execution

8
tools/palm/muExpansionDriver/make.sh
View File

@@ -7,7 +7,7 @@ cd $DIR
APPNAME="MuExpDriver"
if [ "$1" = "clean" ]; then
rm -rf *.o *.a $APPNAME $APPNAME.prc *.bin
rm -rf *.o *.a $APPNAME ./armExit ./armCall68k $APPNAME.prc *.bin
exit
fi
@@ -18,6 +18,10 @@ if [ "$1" = "debug" ]; then
CFLAGS="$CFLAGS -DDEBUG -g"
fi
arm-palmos-gcc $CFLAGS -c ./armSrc/armExit.c -o ./armSrc/armExit.o
arm-palmos-gcc $CFLAGS -c ./armSrc/armCall68k.c -o ./armSrc/armCall68k.o
arm-palmos-gcc -nostartfiles -o ./armExit ./armSrc/armExit.o
arm-palmos-gcc -nostartfiles -o ./armCall68k ./armSrc/armCall68k.o
for I in "${FILES[@]}"; do
m68k-palmos-gcc $CFLAGS -c $I.c -o $I.o
done
@@ -29,4 +33,4 @@ if type "MakePalmIcon" &> /dev/null; then
fi
pilrc $APPNAME.rcp
build-prc $APPNAME.def $APPNAME *.bin
build-prc $APPNAME.def $APPNAME ./armExit ./armCall68k *.bin