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Prepare for supporting LBAs in persitent code

This commit is contained in:
Jaby 2023-01-25 20:46:26 +01:00 committed by Jaby
parent 5bc0b375c5
commit 647601d993
6 changed files with 44 additions and 23 deletions
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16
include/PSX/AutoLBA/auto_lba.hpp Normal file
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@ -0,0 +1,16 @@
#ifndef __JABYENGINE_AUTO_LBA_HPP__
#define __JABYENGINE_AUTO_LBA_HPP__
#include "../../stdint.h"
namespace JabyEngine {
#define __jabyengine_start_lba_request
#define __jabyengine_request_lba_for(name, file) name
#define __jabyengine_end_lba_request EndOfRequest
struct __attribute__((packed)) AutoLBAEntry {
uint16_t lba;
uint16_t size_words;
};
}
#endif //!__JABYENGINE_AUTO_LBA_HPP__

9
include/PSX/AutoLBA/auto_lba_declaration.hpp Normal file
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@ -0,0 +1,9 @@
#ifndef __JABYENGINE_AUTO_LBA_DECLARATION_HPP__
#define __JABYENGINE_AUTO_LBA_DECLARATION_HPP__
extern const JabyEngine::AutoLBAEntry overlay_lba[];
#define __declare_lba_header(enum_struct) \
[[gnu::used]] \
const JabyEngine::AutoLBAEntry __section(".header.lbas") overlay_lba[static_cast<int>(enum_struct::EndOfRequest)] = {0}
#endif //!__JABYENGINE_AUTO_LBA_DECLARATION_HPP__

8
include/PSX/Overlay/overlay.hpp
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@ -1,6 +1,6 @@
#ifndef __JABYENGINE_OVERLAY__HPP__
#define __JABYENGINE_OVERLAY__HPP__
#include "../../stdint.h"
#include "../AutoLBA/auto_lba.hpp"
namespace JabyEngine {
struct __attribute__((packed)) OverlayHeader {
@ -8,10 +8,6 @@ namespace JabyEngine {
uint16_t lba_size; //< The size of the OverlayLBA section
};
// Maybe encode attributes like "isLZ4" into size parameter
struct __attribute__((packed)) OverlayLBA {
uint16_t lba;
uint16_t size_words;
};
typedef AutoLBAEntry OverlayLBA;
}
#endif //!__JABYENGINE_OVERLAY__HPP__

7
include/PSX/Overlay/overlay_declaration.hpp
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@ -3,12 +3,11 @@
// No include here because this header should be included in a namespace and we don't want multiple namespace definitions of OverlayHeader and OverlayLBA
#include "../AutoLBA/auto_lba_declaration.hpp"
extern const JabyEngine::OverlayHeader overlay_header;
extern const JabyEngine::OverlayLBA overlay_lba[];
#define __declare_overlay_header(function, enum_struct) \
__declare_lba_header(enum_struct); \
[[gnu::used]] \
const JabyEngine::OverlayHeader __section(".header") overlay_header = {.execute = &function, .lba_size = static_cast<uint16_t>(enum_struct::EndOfRequest)}; \
[[gnu::used]] \
const JabyEngine::OverlayLBA __section(".header.lbas") overlay_lba[static_cast<int>(enum_struct::EndOfRequest)] = {0}
const JabyEngine::OverlayHeader __section(".header") overlay_header = {.execute = &function, .lba_size = static_cast<uint16_t>(enum_struct::EndOfRequest)};
#endif //!__JABYENGINE_OVERLAY_DECLARATION__HPP__

8
include/PSX/Overlay/overlay_lba.hpp
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@ -1,8 +0,0 @@
#ifndef __JABYENGINE_OVERLAY_LBA__HPP__
#define __JABYENGINE_OVERLAY_LBA__HPP__
#define __jabyengine_start_lba_request
#define __jabyengine_request_lba_for(name, file) name
#define __jabyengine_end_lba_request EndOfRequest
#endif //!__JABYENGINE_OVERLAY_LBA__HPP__

19
lib/psexe.ld
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@ -44,9 +44,10 @@ __sp = __ram_top - 0x100;
__dcache = ORIGIN(dcache);
__dcache_top = ORIGIN(dcache) + LENGTH(dcache);
__bss_len = (__bss_end - __bss_start);
__ftext_len = (__ftext_end - __ftext_start);
__fdata_len = (__planschi_end - __fdata_start);
__bss_len = (__bss_end - __bss_start);
__ftext_len = (__ftext_end - __ftext_start);
__fdata_len = (__planschi_end - __fdata_start);
__persistent_lbas_len = (__persistent_lbas_end - __persistent_lbas_start);
__stack_start = ORIGIN(ram) + LENGTH(ram);
@ -120,7 +121,7 @@ SECTIONS {
LONG(TLOAD_ADDR);
/* 0x001C - 0x001F : size, in bytes, of the "text" section. */
LONG(__ftext_len + __fdata_len);
LONG(__persistent_lbas_len + __ftext_len + __fdata_len);
/* 0x0020 - 0x002F :
Skip "data_addr", "data_size", "bss_addr" and "bss_size".
@ -140,8 +141,16 @@ SECTIONS {
. = . + 1992;
} > loader
__persistent_lbas_start = ABSOLUTE(.);
.persistent_lbas TLOAD_ADDR : {
__persistent_lbas = .;
KEEP(*(.header.lbas))
} > ram
. = ALIGN(4);
__persistent_lbas_end = ABSOLUTE(.);
__ftext_start = ABSOLUTE(.);
.text TLOAD_ADDR : {
.text : {
*(.start)
*(.init)
KEEP (*(SORT_NONE(.fini)))