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Use specs file, remove -nostartfiles

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This commit is contained in:
TuxSH 2018-02-27 20:14:12 +01:00
parent 0258324872
commit 5bade9ee1c
4 changed files with 17 additions and 19 deletions
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4
exosphere/Makefile
View File

@ -28,7 +28,7 @@ CFLAGS = \
-Werror \ -Werror \
-Wall -Wall
LDFLAGS = -g $(ARCH) -nostartfiles -Wl,--nmagic,--gc-sections LDFLAGS = -specs=linker.specs -g $(ARCH)
objects = $(patsubst $(dir_source)/%.s, $(dir_build)/%.o, \ objects = $(patsubst $(dir_source)/%.s, $(dir_build)/%.o, \
$(patsubst $(dir_source)/%.c, $(dir_build)/%.o, \ $(patsubst $(dir_source)/%.c, $(dir_build)/%.o, \
@ -55,7 +55,7 @@ $(dir_out)/$(name).bin: $(dir_build)/$(name).elf
$(OBJCOPY) -S -O binary $< $@ $(OBJCOPY) -S -O binary $< $@
$(dir_build)/$(name).elf: $(objects) $(dir_build)/$(name).elf: $(objects)
$(LINK.o) -T linker.ld $(OUTPUT_OPTION) $^ $(LINK.o) $(OUTPUT_OPTION) $^
$(dir_bpmpfw)/out/bpmpfw.bin: $(dir_bpmpfw) $(dir_bpmpfw)/out/bpmpfw.bin: $(dir_bpmpfw)
@$(MAKE) -C $< @$(MAKE) -C $<

7
exosphere/linker.specs Normal file
View File

@ -0,0 +1,7 @@
%rename link old_link
*link:
%(old_link) -T linker.ld --nmagic --gc-sections
*startfile:
crti%O%s crtbegin%O%s

12
exosphere/src/coldboot_main.c
View File

@ -5,22 +5,10 @@
#include "cache.h" #include "cache.h"
extern uint8_t __pk2ldr_start__[], __pk2ldr_end__[]; extern uint8_t __pk2ldr_start__[], __pk2ldr_end__[];
extern void __jump_to_lower_el(uint64_t arg, uintptr_t ep, unsigned int el); extern void __jump_to_lower_el(uint64_t arg, uintptr_t ep, unsigned int el);
void _init(void);
void _fini(void);
void coldboot_main(void); void coldboot_main(void);
void _init(void) {
/* Stubbed. Should have been provided by gcc but we have set -nostartfiles */
}
void _fini(void) {
/* Stubbed. Should have been provided by gcc but we have set -nostartfiles */
}
void coldboot_main(void) { void coldboot_main(void) {
uintptr_t *mmu_l3_table = (uintptr_t *)TZRAM_GET_SEGMENT_ADDRESS(TZRAM_SEGMENT_ID_L3_TRANSLATION_TABLE); uintptr_t *mmu_l3_table = (uintptr_t *)TZRAM_GET_SEGMENT_ADDRESS(TZRAM_SEGMENT_ID_L3_TRANSLATION_TABLE);
uintptr_t pk2ldr = TZRAM_GET_SEGMENT_ADDRESS(TZRAM_SEGMENT_ID_PK2LDR); uintptr_t pk2ldr = TZRAM_GET_SEGMENT_ADDRESS(TZRAM_SEGMENT_ID_PK2LDR);

13
exosphere/src/start.s
View File

@ -77,6 +77,7 @@ __start_cold:
msr spsel, #0 msr spsel, #0
bl get_coldboot_crt0_stack_address bl get_coldboot_crt0_stack_address
mov sp, x0 mov sp, x0
mov fp, #0
bl coldboot_init bl coldboot_init
ldr x16, =__jump_to_main_cold ldr x16, =__jump_to_main_cold
br x16 br x16
@ -91,6 +92,7 @@ __start_warm:
msr spsel, #0 msr spsel, #0
bl get_warmboot_crt0_stack_address bl get_warmboot_crt0_stack_address
mov sp, x0 mov sp, x0
mov fp, #0
bl warmboot_init bl warmboot_init
ldr x16, =__jump_to_main_warm ldr x16, =__jump_to_main_warm
br x16 br x16
@ -100,16 +102,17 @@ __start_warm:
__jump_to_main_cold: __jump_to_main_cold:
/* This is inspired by Nintendo's code but significantly different */ /* This is inspired by Nintendo's code but significantly different */
bl __set_exception_entry_stack_pointer bl __set_exception_entry_stack_pointer
bl get_pk2ldr_stack_address
mov sp, x0
/* /*
Normally Nintendo calls it in crt0, but it's fine to do that here Normally Nintendo calls it in crt0, but it's fine to do that here.
note that package2.c shouldn't have constructed objects, because we Please note that package2.c shouldn't have constructed objects, because we
call __libc_fini_array after load_package2 has been cleared, on EL3 call __libc_fini_array after load_package2 has been cleared, on EL3
to EL3 chainload. to EL3 chainload.
*/ */
bl __libc_init_array bl __libc_init_array
bl get_pk2ldr_stack_address
mov sp, x0
bl load_package2 bl load_package2
mov w0, #3 /* use core3 stack temporarily */ mov w0, #3 /* use core3 stack temporarily */