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arm-linux.kernel decompressor

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This commit is contained in:
John Reiser 2006-12-16 14:52:22 -08:00
parent 7e65938ca6
commit bf0086d7b5
3 changed files with 713 additions and 685 deletions
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21
src/p_vmlinx.cpp
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@ -740,9 +740,10 @@ void PackVmlinuxARM::pack(OutputFile *fo)
ibuf.alloc(file_size); ibuf.alloc(file_size);
obuf.allocForCompression(file_size); obuf.allocForCompression(file_size);
// .e_ident, .e_machine, .e_version, .e_flags // .e_ident, .e_machine, .e_version
memcpy(&ehdro, &ehdri, sizeof(ehdro)); memcpy(&ehdro, &ehdri, sizeof(ehdro));
ehdro.e_type = Elf32_Ehdr::ET_REL; ehdro.e_type = Elf32_Ehdr::ET_REL;
ehdro.e_flags = 0;
ehdro.e_entry = 0; ehdro.e_entry = 0;
ehdro.e_phoff = 0; ehdro.e_phoff = 0;
ehdro.e_shoff = sizeof(ehdro); // later ehdro.e_shoff = sizeof(ehdro); // later
@ -776,7 +777,7 @@ void PackVmlinuxARM::pack(OutputFile *fo)
if (0x40==(0xf0 & ft.id)) { if (0x40==(0xf0 & ft.id)) {
linker->defineSymbol("filter_length", ph.u_len); // redefine linker->defineSymbol("filter_length", ph.u_len); // redefine
} }
linker->defineSymbol("BYTE_ADJ", (3& -ph.c_len)); linker->defineSymbol("BYTE_ADJ", (3& -txt_c_len));
linker->defineSymbol("WORD_ADJ", 4); linker->defineSymbol("WORD_ADJ", 4);
defineDecompressorSymbols(); defineDecompressorSymbols();
relocateLoader(); relocateLoader();
@ -796,17 +797,17 @@ void PackVmlinuxARM::pack(OutputFile *fo)
shdro[1].sh_size = sizeof(stub_arm_linux_kernel_vmlinux_head) + ph.c_len + lsize; shdro[1].sh_size = sizeof(stub_arm_linux_kernel_vmlinux_head) + ph.c_len + lsize;
shdro[1].sh_addralign = 1; shdro[1].sh_addralign = 1;
// ENTRY_POINT // This ought to be a linker section (to handle the relocation of 'bl'),
// but buildLoader gets called from the middle of compressWithFilters
// so there is a circularity problem.
fo->write(&stub_arm_linux_kernel_vmlinux_head[0], sizeof(stub_arm_linux_kernel_vmlinux_head)-2*4); fo->write(&stub_arm_linux_kernel_vmlinux_head[0], sizeof(stub_arm_linux_kernel_vmlinux_head)-2*4);
tmp_le32 = ehdri.e_entry; fo->write(&tmp_le32, 4); tmp_le32 = get_le32(&stub_arm_linux_kernel_vmlinux_head[sizeof(stub_arm_linux_kernel_vmlinux_head)-2*4]);
tmp_le32 = (0xff000000 & tmp_le32) | (0x00ffffff & (-0+ ((3+ txt_c_len)>>2)));
// COMPRESSED_LENGTH fo->write(&tmp_le32, 4);
fo->write(&stub_arm_linux_kernel_vmlinux_head[sizeof(stub_arm_linux_kernel_vmlinux_head)-4], 0); fo->write(&stub_arm_linux_kernel_vmlinux_head[sizeof(stub_arm_linux_kernel_vmlinux_head)-4], 4);
tmp_le32 = ph.c_len; fo->write(&tmp_le32, 4);
fo_off += sizeof(stub_arm_linux_kernel_vmlinux_head); fo_off += sizeof(stub_arm_linux_kernel_vmlinux_head);
fo->write(obuf, ph.c_len); fo_off += ph.c_len; fo->write(obuf, ~3& (3+ txt_c_len)); fo_off += ~3& (3+ txt_c_len);
fo->write(loader, lsize); fo_off += lsize; fo->write(loader, lsize); fo_off += lsize;
#if 0 #if 0

1371
src/stub/arm-linux.kernel.vmlinux.h
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File diff suppressed because it is too large Load Diff

6
src/stub/src/arm-linux.kernel.vmlinux.S
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@ -77,9 +77,15 @@ section LXMOVEUP
// ============= DECOMPRESSION // ============= DECOMPRESSION
// ============= // =============
section NRV2B
#include "arch/arm/v5a/nrv2b_d8.S" #include "arch/arm/v5a/nrv2b_d8.S"
section NRV2D
#include "arch/arm/v5a/nrv2d_d8.S" #include "arch/arm/v5a/nrv2d_d8.S"
section NRV2E
#include "arch/arm/v5a/nrv2e_d8.S" #include "arch/arm/v5a/nrv2e_d8.S"
#include "arch/arm/v5a/lzma_d.S" #include "arch/arm/v5a/lzma_d.S"
// ============= // =============