diff --git a/.cproject b/.cproject new file mode 100644 index 0000000..d5bc355 --- /dev/null +++ b/.cproject @@ -0,0 +1,96 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + make + + all + true + true + true + + + make + + clean + true + true + true + + + + diff --git a/.project b/.project new file mode 100644 index 0000000..c3741ef --- /dev/null +++ b/.project @@ -0,0 +1,26 @@ + + + emu_sd + + + + + + org.eclipse.cdt.managedbuilder.core.genmakebuilder + clean,full,incremental, + + + + + org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder + full,incremental, + + + + + + org.eclipse.cdt.core.cnature + org.eclipse.cdt.managedbuilder.core.managedBuildNature + org.eclipse.cdt.managedbuilder.core.ScannerConfigNature + + diff --git a/.settings/org.eclipse.cdt.codan.core.prefs b/.settings/org.eclipse.cdt.codan.core.prefs new file mode 100644 index 0000000..d1c7b01 --- /dev/null +++ b/.settings/org.eclipse.cdt.codan.core.prefs @@ -0,0 +1,67 @@ +eclipse.preferences.version=1 +org.eclipse.cdt.codan.checkers.errnoreturn=Warning +org.eclipse.cdt.codan.checkers.errnoreturn.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},implicit\=>false} +org.eclipse.cdt.codan.checkers.errreturnvalue=Error +org.eclipse.cdt.codan.checkers.errreturnvalue.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}} +org.eclipse.cdt.codan.checkers.noreturn=Error +org.eclipse.cdt.codan.checkers.noreturn.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},implicit\=>false} +org.eclipse.cdt.codan.internal.checkers.AbstractClassCreation=Error 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+org.eclipse.cdt.codan.internal.checkers.UnusedStaticFunctionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},macro\=>true} +org.eclipse.cdt.codan.internal.checkers.UnusedVariableDeclarationProblem=Warning +org.eclipse.cdt.codan.internal.checkers.UnusedVariableDeclarationProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},macro\=>true,exceptions\=>("@(\#)","$Id")} +org.eclipse.cdt.codan.internal.checkers.VariableResolutionProblem=Error +org.eclipse.cdt.codan.internal.checkers.VariableResolutionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}} diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..692c330 --- /dev/null +++ b/Makefile @@ -0,0 +1,24 @@ +# Makefile for the EmuTOS to BaS_gcc SD-card "driver connector" +# +# The driver actually resides within BaS_gcc. All we need to do within the AUTO-folder program is to find the driver +# entry point and put its address into the respective cookie + +TOOLCHAIN_PREFIX=m68k-atari-mint- +CC=$(TOOLCHAIN_PREFIX)gcc + +CFLAGS=-mcpu=5475 \ + -Wno-multichar\ + -Wall +EMUSD=emusd +APP=$(EMUSD).prg + +all: $(APP) + +SOURCES=$(EMUSD).c +OBJECTS=$(SOURCES:.c=.o) + +$(APP): $(OBJECTS) + $(CC) $(CFLAGS) $< -o $(APP) + +.PHONY clean: + - rm -rf *.o $(APP) \ No newline at end of file diff --git a/emusd.c b/emusd.c new file mode 100644 index 0000000..c805e5b --- /dev/null +++ b/emusd.c @@ -0,0 +1,120 @@ +/* + * emusd.c + * + * The driver actually resides within BaS_gcc. All we need to do within the AUTO-folder program is to find the driver + * entry point and put its address into the XHDI cookie + * + * Created on: 01.05.2013 + * Author: mfro + */ + +#include +#include +#include +#include + +#define XHDIMAGIC 0x27011992L + +typedef uint32_t (*cookie_fun)(uint16_t opcode,...); + +static cookie_fun old_vector = NULL; + +static long cookieptr (void) +{ + return *((long *)0x5a0L); +} + +static int getcookie(uint32_t cookie, uint32_t *p_value) +{ + long *cookiejar = (long *) Supexec (cookieptr); + + if (!cookiejar) return 0; + + do + { + if (cookiejar[0] == cookie) + { + if (p_value) *p_value = cookiejar[1]; + return 1; + } + else + cookiejar = &(cookiejar[2]); + } while (cookiejar[-2]); + + return 0; +} + +static void setcookie(uint32_t cookie, uint32_t value) +{ + long *cookiejar = (long *) Supexec(cookieptr); + + do + { + if (cookiejar[0] == cookie) + { + cookiejar[1] = value; + return; + } + else + cookiejar = &(cookiejar[2]); + } while (cookiejar[-2]); +} + +static cookie_fun get_fun_ptr(void) +{ + static cookie_fun XHDI = NULL; + static int have_it = 0; + + if (!have_it) + { + uint32_t *magic_test; + + getcookie ('XHDI', (uint32_t *) &XHDI); + have_it = 1; + + /* check magic */ + + magic_test = (uint32_t *)XHDI; + if (magic_test && (magic_test[-1] != XHDIMAGIC)) + XHDI = NULL; + } + + return XHDI; +} + +__extension__ cookie_fun bas_sd_vector(cookie_fun old_vector) +{ + register long retvalue __asm__("d0"); + + __asm__ __volatile( + "move.l %1,-(sp)\n\t" + "trap #0\n\t" + "addq.l #4,sp\n\t" + : "=r"(retvalue) + : "g"(old_vector) + : + ); + retvalue; +} + +int main(int argc, char *argv[]) +{ + uint32_t value; + cookie_fun bas_vector; + + if (getcookie('XHDI', &value)) + { + if ((old_vector = get_fun_ptr())) + { + printf("old XHDI vector (%p) found and saved\r\n", old_vector); + } + } + + bas_vector = bas_sd_vector(old_vector); + printf("got vector from BaS: %p\r\n", bas_vector); + setcookie('XHDI', (uint32_t) bas_vector); + + printf("vector to BaS driver set\r\n"); + + return 0; +}