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Use VA start and end linker symbols instead of length (#865)

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Wolfvak 2024-06-19 16:19:45 -03:00 committed by GitHub
parent eee63dd155
commit 7b6b478582
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GPG Key ID: B5690EEEBB952194
3 changed files with 12 additions and 10 deletions
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10
arm11/link.ld
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@ -16,7 +16,7 @@ SECTIONS
__text_va = ABSOLUTE(.);
*(.text*)
. = ALIGN(4K);
__text_len = . - __text_va;
__text_va_end = .;
} >AXIWRAM
.data : ALIGN(4K)
@ -25,7 +25,7 @@ SECTIONS
__data_va = ABSOLUTE(.);
*(.data*)
. = ALIGN(4K);
__data_len = . - __data_va;
__data_va_end = .;
} >AXIWRAM
.rodata : ALIGN(4K)
@ -34,7 +34,7 @@ SECTIONS
__rodata_va = ABSOLUTE(.);
*(.rodata*)
. = ALIGN(4K);
__rodata_len = . - __rodata_va;
__rodata_va_end = .;
} >AXIWRAM
.shared (NOLOAD) : ALIGN(4K)
@ -43,7 +43,7 @@ SECTIONS
__shared_va = ABSOLUTE(.);
*(.shared*)
. = ALIGN(4K);
__shared_len = . - __shared_va;
__shared_va_end = .;
} >AXIWRAM
.bss (NOLOAD) : ALIGN(4K)
@ -52,6 +52,6 @@ SECTIONS
__bss_va = ABSOLUTE(.);
*(.bss*)
. = ALIGN(4K);
__bss_len = . - __bss_va;
__bss_va_end = .;
} >AXIWRAM
}

8
arm11/source/boot.s
View File

@ -76,10 +76,12 @@ __boot:
b 1b
corezero_start:
@ assume __bss_len is 128 byte aligned
@ assumes the .bss section size is 128 byte aligned (or zero)
ldr r0, =__bss_pa
ldr r1, =__bss_len
add r1, r0, r1
ldr r1, =__bss_va_end @ calculate the length of .bss using the VA start and end
ldr r2, =__bss_va
sub r1, r1, r2
add r1, r0, r1 @ fixup to be PA start and end
mov r2, #0
mov r3, #0
mov r4, #0

4
arm11/source/system/sections.h
View File

@ -20,7 +20,7 @@
#include <types.h>
#define DEF_SECT_(n) extern u32 __##n##_pa, __##n##_va, __##n##_len;
#define DEF_SECT_(n) extern u32 __##n##_pa, __##n##_va, __##n##_va_end;
DEF_SECT_(text)
DEF_SECT_(data)
DEF_SECT_(rodata)
@ -30,6 +30,6 @@ DEF_SECT_(shared)
#define SECTION_VA(n) ((u32)&__##n##_va)
#define SECTION_PA(n) ((u32)&__##n##_pa)
#define SECTION_LEN(n) ((u32)&__##n##_len)
#define SECTION_LEN(n) (((u32)(&__##n##_va_end) - (u32)(&__##n##_va)))
#define SECTION_TRI(n) SECTION_VA(n), SECTION_PA(n), SECTION_LEN(n)