osd-contiki/cpu/x86/Makefile.x86

CONTIKI_CPU_DIRS = . drivers

CONTIKI_SOURCEFILES += mtarch.c gdt.c helpers.S idt.c cpu.c rtc.c pit.c pic.c

### Compiler definitions
CC       = gcc
LD       = gcc
AS       = as
OBJCOPY  = objcopy
SIZE     = size
STRIP    = strip
CFLAGSNO = -Wall -g -I/usr/local/include
CFLAGS  += $(CFLAGSNO)
ifeq ($(HOST_OS),Linux)
  LDFLAGS  = -Wl,-Map=contiki-$(TARGET).map,-export-dynamic
else
  LDFLAGS  = -Wl
endif

### Compilation rules

%.so: $(OBJECTDIR)/%.o
	$(LD) -shared -o $@ $^

ifdef CORE
.PHONY: symbols.c symbols.h
symbols.c symbols.h:
	$(NM) $(CORE) | awk -f $(CONTIKI)/tools/mknmlist > symbols.c
else
symbols.c symbols.h:
	cp ${CONTIKI}/tools/empty-symbols.c symbols.c
	cp ${CONTIKI}/tools/empty-symbols.h symbols.h
endif
x86: Initialize the 8259 PIC The Programmable Interrupt Controller is a chip responsible for translating hardware interrupts to system interrupts. When it receives an Interrupt Request (IRQ), it triggers the appropriate interrupt line reaching the appropriate IDT gate, following a previously setup offset. There are 2 daisy-chained PICs. PIC1 handles IRQs 0-7 and PIC2 handles IRQs 8-15. If no vector offset is set, an IRQ0, for instance, would trigger the interrupt 0, clashing with the "Division by zero exception" handler. Thus the IRQs must be remapped. This patch implements the PICs initialization through their 4 Initialization Command Words (ICWs) in a very "canonical" way: - ICW1: the initializing command; - ICW2: the vector offset for the PIC1 and PIC2 (we add an offset of 32 positions); - ICW3: the inter-PICs wiring setup (we connect PIC2 to PIC1's IRQ2); - ICW4: extra systems information (we set PIC1 as Master and PIC2 as slave). It then masks the Interrupt Mask Register, blocking all IRQs but #2 initially. These must be unmasked on demand. The IMR is 8-bits long, so setting the n^th bit to 1 would DISABLE the IRQ n while setting it to 0 would ENABLE IRQ n. As stated, this is an implementation of the legacy 8259 PIC. More investigation is needed so we decide if it is enough or if we need the (newer) APIC implementation instead. This patch also adds the outb() helper function to helpers.h. The helpers is a wrapper for assembly 'out' instruction. Finally, since we now properly support hardware interrupts, this patch also enables IRQs in platform main(). More information: - Quark X1000 Datasheet, section 21.12, page 898. - http://wiki.osdev.org/8259_PIC - http://stanislavs.org/helppc/8259.html 2015-04-08 22:18:27 +02:00			`CONTIKI_CPU_DIRS = . drivers`
Factored out setup directory search path for source files into Makefile.include. - Search target specific directories before CPU specific directories. - Search CPU specific directories before generic directories. Note: I checked several builds but nevertheless one or the other might need some additional adjustsments. Sorry for the inconvenience. 2007-05-13 10:41:11 +02:00
x86: Add pic_unmask_irq() helper This patch implements the pic_unmask_irq() helper and uses it where applicable. This function zeros the corresponding bit from the IRQ number in IMR register. This patch doesn't implement the pic_mask_irq() helper since it is not useful at this moment. 2015-07-02 22:46:47 +02:00			`CONTIKI_SOURCEFILES += mtarch.c gdt.c helpers.S idt.c cpu.c rtc.c pit.c pic.c`
Import of the contiki-2.x development code from the SICS internal CVS server 2006-06-18 00:41:10 +02:00
			`### Compiler definitions`
			`CC = gcc`
Redefined LD to gcc to make things compile. Removed generation of symbols.[ch] due to problematic builds (seemingly neverending loops). 2007-03-15 22:52:00 +01:00			`LD = gcc`
Import of the contiki-2.x development code from the SICS internal CVS server 2006-06-18 00:41:10 +02:00			`AS = as`
			`OBJCOPY = objcopy`
galileo: Print elf sections sizes after build This patch changes Galileo's buildsystem to print the elf sections sizes after a new image is built. This way we can easily track how these sections increase or decrease after any change. To achieve that, we define a custom linking rule which is pretty much the same as the default linking rule define in Makefile.include, but we run 'size' command after the image is built. 2015-07-01 23:20:20 +02:00			`SIZE = size`
Import of the contiki-2.x development code from the SICS internal CVS server 2006-06-18 00:41:10 +02:00			`STRIP = strip`
Factored out setup directory search path for source files into Makefile.include. - All compilers used support the -I option for setting an include search directory. - The Contiki source tree follows the (common) approach of placing declarations (in headerf iles) in the same directory as definitions (in source files). As a result it makes sense to use the -I compiler option for just the same set of directories used for the vpath gnumake directive. Note: I checked several builds but nevertheless one or the other might need some additional adjustsments. Sorry for the inconvenience. 2007-05-19 09:54:53 +02:00			`CFLAGSNO = -Wall -g -I/usr/local/include`
Import of the contiki-2.x development code from the SICS internal CVS server 2006-06-18 00:41:10 +02:00			`CFLAGS += $(CFLAGSNO)`
Fixed TARGET=native compilation issues on Darwin. 2012-02-22 01:46:32 +01:00			`ifeq ($(HOST_OS),Linux)`
			`LDFLAGS = -Wl,-Map=contiki-$(TARGET).map,-export-dynamic`
			`else`
			`LDFLAGS = -Wl`
			`endif`
Import of the contiki-2.x development code from the SICS internal CVS server 2006-06-18 00:41:10 +02:00
			`### Compilation rules`

			`%.so: $(OBJECTDIR)/%.o`
			`$(LD) -shared -o $@ $^`
Added generation of symbols.[ch] 2006-12-19 10:21:12 +01:00
Added elfloader-stub, symbols generation 2007-03-23 00:58:08 +01:00			`ifdef CORE`
avoid unnecessary symbols.c/h copying 2012-03-23 19:54:11 +01:00			`.PHONY: symbols.c symbols.h`
Added elfloader-stub, symbols generation 2007-03-23 00:58:08 +01:00			`symbols.c symbols.h:`
Patch by Gideon Ernst: use explicit $(CONTIKI) path instead of implicit ../../ path to the mknmlist script 2009-09-03 19:41:58 +02:00			`$(NM) $(CORE) \| awk -f $(CONTIKI)/tools/mknmlist > symbols.c`
Added elfloader-stub, symbols generation 2007-03-23 00:58:08 +01:00			`else`
Added generation of symbols.[ch] 2006-12-19 10:21:12 +01:00			`symbols.c symbols.h:`
Replaced make-empty-symbols with empty-symbols.[c\|h] The symbol generation shell scripts cause CRLF issues on Windows/Cygwin again and again. Instead of fixing this yet again I opted to remove the symbol generation script at least for the "no symbols" scenario with two C source files to be copied. 2011-04-03 13:24:58 +02:00			`cp ${CONTIKI}/tools/empty-symbols.c symbols.c`
			`cp ${CONTIKI}/tools/empty-symbols.h symbols.h`
Added elfloader-stub, symbols generation 2007-03-23 00:58:08 +01:00			`endif`