Ports/perfect_dark
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Introduce preamble segment and disassemble preamble

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Ryan Dwyer committed 2021-10-05 23:24:25 +10:00
1 parent d6a0d4745a
commit d425d4f11c
12 files changed
+78 -74
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ld/pd.ld
+31 -7
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@@ -25,7 +25,8 @@
__rompos += SIZEOF(.name); \
__rampos = ADDR(.name) + SIZEOF(.name); \
_##name##SegmentEnd = ADDR(.name) + SIZEOF(.name); \
_##name##SegmentRomEnd = __rompos;
_##name##SegmentRomEnd = __rompos; \
_##name##SegmentLen = _##name##SegmentEnd - _##name##SegmentStart;
#define MPSTRINGS(lang) \
BEGIN_SEG(mpstrings##lang) \
@@ -75,11 +76,11 @@
*/
#if VERSION >= VERSION_PAL_FINAL
#define ROMALLOCATION_LIB 0x038850
#define ROMALLOCATION_LIB 0x038800
#define ROMALLOCATION_DATA 0x015000
#define ROMALLOCATION_GAME 0x13d180
#else
#define ROMALLOCATION_LIB 0x038850
#define ROMALLOCATION_LIB 0x038800
#define ROMALLOCATION_DATA 0x015000
#define ROMALLOCATION_GAME 0x151980
#endif
@@ -187,6 +188,29 @@ SECTIONS
}
END_SEG(bootloader)
/***************************************************************************
* preamble
* -------------------------------------------------------------------------
* ROM range: 0x00001000 - 0x00001050
* RAM range: 0x70001000 - 0x70001050
* -------------------------------------------------------------------------
* This segment contains the entry function.
*/
BEGIN_SEG(preamble)
{
build/ROMID/preamble/preamble.o (.text);
. = ALIGN(0x30);
}
END_SEG(preamble)
/**
/* boot()'s address is 0x70001050, but preamble calls it by 0x80001050 due
* to it not being TLB mapped yet. So we set up this variable to allow this
* to happen.
*/
bootFromPreamble = boot + 0x10000000;
/***************************************************************************
* lib
* -------------------------------------------------------------------------
@@ -195,10 +219,12 @@ SECTIONS
* -------------------------------------------------------------------------
*/
__rompos = 0x00001050;
PLACEHOLDER_SEGMENT(libzip)
__rompos = 0x02000000;
__rampos = 0x70001000;
__rampos = 0x70001050;
BEGIN_SEG(lib) SUBALIGN(16)
{
@@ -207,8 +233,6 @@ SECTIONS
}
END_SEG(lib)
_libSegmentStart = 0x70001050;
/***************************************************************************
* data
* -------------------------------------------------------------------------
@@ -224,7 +248,7 @@ SECTIONS
PLACEHOLDER_SEGMENT(datazip)
__rompos = __savedrompos;
__rampos = 0x80001000 + SIZEOF(.lib);
__rampos = 0x80001050 + SIZEOF(.lib);
BEGIN_SEG(data)
{