Fix stack alignment to 16 bytes and save non-volatile registers.
This commit is contained in:
parent
d290d4101b
commit
dde77cdb0f
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@ -10,11 +10,13 @@
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# First four arguments are passed via registers rcx, rdx, r8, r9 (if they fit in 64-bits)
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# but we need to leave stack space
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# rax, rcx, rdx, r8, r9, r10 and r11 are volatile and can be changed by called function
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# Stack must be 16-byte aligned before UEFI calls.
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DEFINE add_eax,edi 01F8
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DEFINE add_rbx, 4883C3
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DEFINE add_rsp, 4883C4
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DEFINE add_rbx,[rdi+BYTE] 48035F
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DEFINE and_rsp, 4883E4
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DEFINE call E8
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DEFINE call_[rcx+BYTE] FF51
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DEFINE call_[r14+BYTE] 41FF56
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@ -39,18 +41,22 @@ DEFINE mov_rcx,r13 4C89E9
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DEFINE mov_rdx,rbx 4889DA
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DEFINE mov_rdx,rsp 4889E2
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DEFINE mov_rsp,rbp 4889EC
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DEFINE mov_rsp,r15 4C89FC
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DEFINE mov_r8,rsp 4989E0
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DEFINE mov_r8,r15 4D89F8
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DEFINE mov_r9,r15 4D89F9
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DEFINE mov_r13,rcx 4989CD
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DEFINE mov_r15,rcx 4989CF
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DEFINE mov_r15,rsp 4989E7
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DEFINE mov_al,[rbx] 8A03
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DEFINE mov_[rbx], C603
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DEFINE mov_rbx,[rdi+BYTE] 488B5F
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DEFINE mov_rcx,[rdi+BYTE] 488B4F
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DEFINE mov_rsp,[rsp+BYTE] 488B6424
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DEFINE mov_r14,[rdx+BYTE] 4C8B72
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DEFINE pop_rax 58
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DEFINE pop_rbx 5B
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DEFINE pop_rbp 5D
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DEFINE pop_rcx 59
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DEFINE pop_rdi 5F
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DEFINE pop_rsi 5E
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@ -62,12 +68,17 @@ DEFINE pop_r14 415E
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DEFINE pop_r15 415F
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DEFINE push 6A
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DEFINE push_rax 50
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DEFINE push_rbp 55
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DEFINE push_rbx 53
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DEFINE push_rdi 57
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DEFINE push_rdx 52
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DEFINE push_rsi 56
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DEFINE push_rsp 54
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DEFINE push_r12 4154
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DEFINE push_r13 4155
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DEFINE push_r14 4156
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DEFINE push_r15 4157
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DEFINE push_[rsp] FF3424
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DEFINE ret C3
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DEFINE ror_r9 49D1C9
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DEFINE shl_edi, C1E7
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@ -84,7 +95,17 @@ DEFINE xor_r9,r9 4D31C9
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# efi_main(void *image_handle, struct efi_system_table *system)
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:_start
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mov_rbp,rsp # save stack pointer
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# Save non-volatile registers
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push_rbp
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mov_rbp,rsp
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push_rbx
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push_rdi
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push_rsi
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push_r12
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push_r13
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push_r14
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push_r15
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mov_r15,rcx # save image_handle
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mov_r14,[rdx+BYTE] !96 # system->boot
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@ -144,6 +165,7 @@ DEFINE xor_r9,r9 4D31C9
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# Open file for reading
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pop_r8 # arg3 = in
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and_rsp, !-16 # align stack to 16 bytes
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push_rdx # allocate stack for fin
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mov_rdx,rsp # arg2 = &fin
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push !1 # arg5 = EFI_FILE_READ_ONLY
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@ -174,6 +196,7 @@ DEFINE xor_r9,r9 4D31C9
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push_r14 # save system->boot
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push_r15 # save image_handle
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push_rsi # save rootdir
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mov_r15,rsp # save stack location for cleanup
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# Our flag for byte processing
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push !-1
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@ -279,6 +302,10 @@ DEFINE xor_r9,r9 4D31C9
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# Writes byte stored in al
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:write_byte
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push_rsp # align stack to 16 bytes
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push_[rsp] # align stack to 16 bytes
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and_rsp, !-16 # align stack to 16 bytes
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push_rax # make sure next call is aligned to 16 bytes
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mov_rcx,r13 # arg1 = fout
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push !1 # size = 1
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mov_rdx,rsp # arg2 = &size
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@ -288,11 +315,15 @@ DEFINE xor_r9,r9 4D31C9
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push_rax # allocate shadow stack space for UEFI function
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push_rax # allocate shadow stack space for UEFI function
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call_[rcx+BYTE] !40 # fout->write()
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add_rsp, !40 # deallocate stack
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mov_rsp,[rsp+BYTE] !56 # deallocate stack
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ret # return
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:read_byte
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push_rsp # align stack to 16 bytes
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push_[rsp] # align stack to 16 bytes
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and_rsp, !-16 # align stack to 16 bytes
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push_rax # make sure next call is aligned to 16 bytes
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mov_rcx,r12 # arg1 = fin
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push !1 # size = 1
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mov_rdx,rsp # arg2 = &size
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@ -307,6 +338,7 @@ DEFINE xor_r9,r9 4D31C9
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pop_rax # deallocate stack
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pop_rax # save input to rax
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pop_rsi # save size to rsi
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mov_rsp,[rsp+BYTE] !16 # deallocate stack
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# If the file ended (0 bytes read) terminate
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test_esi,esi # if size = 0
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@ -315,7 +347,7 @@ DEFINE xor_r9,r9 4D31C9
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ret # return
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:terminate
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pop_rax # remove last return address from stack
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mov_rsp,r15 # restore stack location for cleanup
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pop_rsi # restore rootdir
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pop_r15 # restore image_handle
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pop_r14 # restore system->boot
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@ -342,7 +374,17 @@ DEFINE xor_r9,r9 4D31C9
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xor_r9,r9 # arg4 = NULL
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call_[r14+DWORD] %288 # system->boot->close_protocol(image_handle, &guid, image_handle, 0)
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# Restore non-volatile registers
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pop_r15
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pop_r14
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pop_r13
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pop_r12
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pop_rsi
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pop_rdi
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pop_rbx
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mov_rsp,rbp # restore stack
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pop_rbp
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ret # return to UEFI
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@ -10,6 +10,7 @@
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# First four arguments are passed via registers rcx, rdx, r8, r9 (if they fit in 64-bits)
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# but we need to leave stack space
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# rax, rcx, rdx, r8, r9, r10 and r11 are volatile and can be changed by called function
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# Stack must be 16-byte aligned before UEFI calls.
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.intel_syntax noprefix
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.global _start
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@ -17,7 +18,17 @@
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# efi_main(void *image_handle, struct efi_system_table *system)
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_start:
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mov rbp, rsp # save stack pointer
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# Save non-volatile registers
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push rbp
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mov rbp, rsp
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push rbx
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push rdi
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push rsi
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push r12
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push r13
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push r14
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push r15
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mov r15, rcx # save image_handle
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mov r14, [rdx+96] # system->boot
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@ -77,6 +88,7 @@ loop_options_done:
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# Open file for reading
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pop r8 # arg3 = in
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and rsp, -16 # align stack to 16 bytes
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push rdx # allocate stack for fin
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mov rdx, rsp # arg2 = &fin
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push 1 # arg5 = EFI_FILE_READ_ONLY
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@ -107,6 +119,7 @@ loop_options_done:
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push r14 # save system->boot
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push r15 # save image_handle
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push rsi # save rootdir
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mov r15, rsp # save stack location for cleanup
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# Our flag for byte processing
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push -1
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@ -212,6 +225,10 @@ ascii_high:
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# Writes byte stored in al
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write_byte:
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push rsp # align stack to 16 bytes
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push [rsp] # align stack to 16 bytes
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and rsp, -16 # align stack to 16 bytes
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push rax # make sure next call is aligned to 16 bytes
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mov rcx, r13 # arg1 = fout
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push 1 # size = 1
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mov rdx, rsp # arg2 = &size
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@ -221,11 +238,15 @@ write_byte:
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push rax # allocate shadow stack space for UEFI function
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push rax # allocate shadow stack space for UEFI function
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call [rcx+40] # fout->write()
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add rsp, 40 # deallocate stack
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mov rsp, [rsp+56] # deallocate stack
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ret # return
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read_byte:
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push rsp # align stack to 16 bytes
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push [rsp] # align stack to 16 bytes
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and rsp, -16 # align stack to 16 bytes
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push rax # make sure next call is aligned to 16 bytes
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mov rcx, r12 # arg1 = fin
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push 1 # size = 1
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mov rdx, rsp # arg2 = &size
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@ -241,6 +262,7 @@ read_byte:
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pop rax # deallocate stack
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pop rax # save input to rax
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pop rsi # save size to rsi
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mov rsp, [rsp+16] # deallocate stack
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# If the file ended (0 bytes read) terminate
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test esi, esi # if size == 0
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@ -249,7 +271,7 @@ read_byte:
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ret # return
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terminate:
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pop rax # remove last return address from stack
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mov rsp, r15 # restore stack location for cleanup
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pop rsi # restore rootdir
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pop r15 # restore image_handle
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pop r14 # restore system->boot
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@ -276,8 +298,18 @@ terminate:
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xor r9, r9 # arg4 = NULL
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call [r14+288] # system->boot->close_protocol(image_handle, &guid, image_handle, 0)
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# Restore non-volatile registers
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pop r15
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pop r14
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pop r13
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pop r12
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pop rsi
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pop rdi
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pop rbx
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abort: # used for debugging only
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mov rsp, rbp # restore stack
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pop rbp
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ret # return to UEFI
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@ -10,10 +10,21 @@
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# First four arguments are passed via registers rcx, rdx, r8, r9 (if they fit in 64-bits)
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# but we need to leave stack space
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# rax, rcx, rdx, r8, r9, r10 and r11 are volatile and can be changed by called function
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# Stack must be 16-byte aligned before UEFI calls.
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# efi_main(void *image_handle, struct efi_system_table *system)
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:_start
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4889E5 ; mov_rbp,rsp # save stack pointer
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# Save non-volatile registers
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55 ; push_rbp
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4889E5 ; mov_rbp,rsp
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53 ; push_rbx
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57 ; push_rdi
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56 ; push_rsi
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4154 ; push_r12
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4155 ; push_r13
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4156 ; push_r14
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4157 ; push_r15
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4989CF ; mov_r15,rcx # save image_handle
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4C8B72 60 ; mov_r14,[rdx+BYTE] !96 # system->boot
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@ -73,6 +84,7 @@
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# Open file for reading
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4158 ; pop_r8 # arg3 = in
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4883E4 F0 ; and_rsp, !-16 # align stack to 16 bytes
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52 ; push_rdx # allocate stack for fin
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4889E2 ; mov_rdx,rsp # arg2 = &fin
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6A 01 ; push !1 # arg5 = EFI_FILE_READ_ONLY
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@ -103,6 +115,7 @@
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4156 ; push_r14 # save system->boot
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4157 ; push_r15 # save image_handle
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56 ; push_rsi # save rootdir
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4989E7 ; mov_r15,rsp # save stack location for cleanup
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# Our flag for byte processing
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6A FF ; push !-1
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@ -208,6 +221,10 @@
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# Writes byte stored in al
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:write_byte
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54 ; push_rsp # align stack to 16 bytes
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FF3424 ; push_[rsp] # align stack to 16 bytes
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4883E4 F0 ; and_rsp, !-16 # align stack to 16 bytes
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50 ; push_rax # make sure next call is aligned to 16 bytes
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4C89E9 ; mov_rcx,r13 # arg1 = fout
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6A 01 ; push !1 # size = 1
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4889E2 ; mov_rdx,rsp # arg2 = &size
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@ -217,11 +234,15 @@
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50 ; push_rax # allocate shadow stack space for UEFI function
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50 ; push_rax # allocate shadow stack space for UEFI function
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FF51 28 ; call_[rcx+BYTE] !40 # fout->write()
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4883C4 28 ; add_rsp, !40 # deallocate stack
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488B6424 38 ; mov_rsp,[rsp+BYTE] !56 # deallocate stack
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C3 ; ret # return
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:read_byte
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54 ; push_rsp # align stack to 16 bytes
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FF3424 ; push_[rsp] # align stack to 16 bytes
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4883E4 F0 ; and_rsp, !-16 # align stack to 16 bytes
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50 ; push_rax # make sure next call is aligned to 16 bytes
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4C89E1 ; mov_rcx,r12 # arg1 = fin
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6A 01 ; push !1 # size = 1
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4889E2 ; mov_rdx,rsp # arg2 = &size
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@ -236,6 +257,7 @@
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58 ; pop_rax # deallocate stack
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58 ; pop_rax # save input to rax
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5E ; pop_rsi # save size to rsi
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488B6424 10 ; mov_rsp,[rsp+BYTE] !16 # deallocate stack
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# If the file ended (0 bytes read) terminate
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85F6 ; test_esi,esi # if size = 0
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@ -244,7 +266,7 @@
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C3 ; ret # return
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:terminate
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58 ; pop_rax # remove last return address from stack
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4C89FC ; mov_rsp,r15 # restore stack location for cleanup
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5E ; pop_rsi # restore rootdir
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415F ; pop_r15 # restore image_handle
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415E ; pop_r14 # restore system->boot
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@ -271,7 +293,17 @@
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4D31C9 ; xor_r9,r9 # arg4 = NULL
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41FF96 20010000 ; call_[r14+DWORD] %288 # system->boot->close_protocol(image_handle, &guid, image_handle, 0)
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# Restore non-volatile registers
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415F ; pop_r15
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415E ; pop_r14
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415D ; pop_r13
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415C ; pop_r12
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5E ; pop_rsi
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5F ; pop_rdi
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5B ; pop_rbx
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4889EC ; mov_rsp,rbp # restore stack
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5D ; pop_rbp
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C3 ; ret # return to UEFI
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@ -10,6 +10,7 @@
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# First four arguments are passed via registers rcx, rdx, r8, r9 (if they fit in 64-bits)
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# but we need to leave stack space
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# rax, rcx, rdx, r8, r9, r10 and r11 are volatile and can be changed by called function
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# Stack must be 16-byte aligned before UEFI calls.
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# DOS MZ header
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4D 5A # Signature
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@ -128,9 +129,9 @@ F0 00 # SizeOfOptionalHeader
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# [0x148]
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# Start of section headers
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00 00 00 00 00 00 00 00 ; Name of the section (empty) but could set to ".text"
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D0 01 00 00 ; VirtualSize
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09 02 00 00 ; VirtualSize
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00 10 00 00 ; VirtualAddress
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D0 01 00 00 ; SizeOfRawData
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09 02 00 00 ; SizeOfRawData
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70 01 00 00 ; PointerToRawData
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00 00 00 00 ; PointerToRelocations
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00 00 00 00 ; PointerToLinenumbers
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@ -142,13 +143,23 @@ D0 01 00 00 ; SizeOfRawData
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# Our actual program
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# efi_main(void *image_handle, struct efi_system_table *system)
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# :_start
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4889E5 ; mov_rbp,rsp # save stack pointer
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# Save non-volatile registers
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55 ; push_rbp
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4889E5 ; mov_rbp,rsp
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53 ; push_rbx
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57 ; push_rdi
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56 ; push_rsi
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4154 ; push_r12
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4155 ; push_r13
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4156 ; push_r14
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4157 ; push_r15
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4989CF ; mov_r15,rcx # save image_handle
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4C8B72 60 ; mov_r14,[rdx+BYTE] !96 # system->boot
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# Open Loaded Image protocol
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4D89F9 ; mov_r9,r15 # arg4 = image_handle
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488D15 9C010000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
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488D15 C9010000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
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4C89C9 ; mov_rcx,r9 # arg1 = image_handle
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50 ; push_rax # allocate stack for image
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4989E0 ; mov_r8,rsp # arg3 = &image
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@ -161,7 +172,7 @@ D0 01 00 00 ; SizeOfRawData
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# Get root file system
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4D89F9 ; mov_r9,r15 # arg4 = image_handle
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488D15 87010000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
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488D15 B4010000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
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488B4F 18 ; mov_rcx,[rdi+BYTE] !24 # arg1 = root_device = image->device
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4989CD ; mov_r13,rcx # save root_device
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50 ; push_rax # allocate stack for rootfs
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@ -187,7 +198,7 @@ D0 01 00 00 ; SizeOfRawData
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488B5F 38 ; mov_rbx,[rdi+BYTE] !56 # options = image->load_options
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4889DA ; mov_rdx,rbx # save beginning of load_options
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48035F 30 ; add_rbx,[rdi+BYTE] !48 # go to the end of load_options
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# :loop_options [_start + 0x6F]
|
||||
# :loop_options [_start + 0x7B]
|
||||
4839D3 ; cmp_rbx,rdx # Check if we are done
|
||||
74 14 ; je !loop_options_done # We are done
|
||||
4883EB 02 ; sub_rbx, !2 # --options
|
||||
|
|
@ -198,10 +209,11 @@ D0 01 00 00 ; SizeOfRawData
|
|||
4883C3 02 ; add_rbx, !2 # ++options
|
||||
53 ; push_rbx # push another argument onto stack
|
||||
EB E7 ; jmp !loop_options # next argument
|
||||
# :loop_options_done [_start + 0x88]
|
||||
# :loop_options_done [_start + 0x94]
|
||||
|
||||
# Open file for reading
|
||||
4158 ; pop_r8 # arg3 = in
|
||||
4883E4 F0 ; and_rsp, !-16 # align stack to 16 bytes
|
||||
52 ; push_rdx # allocate stack for fin
|
||||
4889E2 ; mov_rdx,rsp # arg2 = &fin
|
||||
6A 01 ; push !1 # arg5 = EFI_FILE_READ_ONLY
|
||||
|
|
@ -232,6 +244,7 @@ D0 01 00 00 ; SizeOfRawData
|
|||
4156 ; push_r14 # save system->boot
|
||||
4157 ; push_r15 # save image_handle
|
||||
56 ; push_rsi # save rootdir
|
||||
4989E7 ; mov_r15,rsp # save stack location for cleanup
|
||||
|
||||
# Our flag for byte processing
|
||||
6A FF ; push !-1
|
||||
|
|
@ -240,9 +253,9 @@ D0 01 00 00 ; SizeOfRawData
|
|||
# temp storage for the sum
|
||||
31FF ; xor_edi,edi # rdi = 0
|
||||
|
||||
# :loop [_start+0xCF]
|
||||
# :loop [_start+0xE2]
|
||||
# Read a byte
|
||||
E8 6F000000 ; call %read_byte
|
||||
E8 79000000 ; call %read_byte
|
||||
|
||||
# process byte
|
||||
E8 1C000000 ; call %hex
|
||||
|
|
@ -261,7 +274,7 @@ D0 01 00 00 ; SizeOfRawData
|
|||
EB E8 ; jmp !loop
|
||||
|
||||
# process second byte of pair
|
||||
# :print [_start+0xE7]
|
||||
# :print [_start+0xFA]
|
||||
# update the sum and store in output
|
||||
C1E7 04 ; shl_edi, !4
|
||||
01F8 ; add_eax,edi
|
||||
|
|
@ -273,7 +286,7 @@ D0 01 00 00 ; SizeOfRawData
|
|||
|
||||
EB DA ; jmp !loop
|
||||
|
||||
# :hex [_start+0xF5]
|
||||
# :hex [_start+0x108]
|
||||
# Purge Comment Lines (#)
|
||||
3C 23 ; cmp_al, !35
|
||||
74 1E ; je !purge_comment
|
||||
|
|
@ -309,9 +322,9 @@ D0 01 00 00 ; SizeOfRawData
|
|||
# The rest that remains needs to be ignored
|
||||
EB 09 ; jmp !ascii_other
|
||||
|
||||
# :purge_comment [_start+0x117]
|
||||
# :purge_comment [_start+0x12A]
|
||||
# Read a byte
|
||||
E8 27000000 ; call %read_byte
|
||||
E8 31000000 ; call %read_byte
|
||||
|
||||
# Loop if not LF
|
||||
3C 0A ; cmp_al, !10
|
||||
|
|
@ -319,24 +332,28 @@ D0 01 00 00 ; SizeOfRawData
|
|||
|
||||
# Otherwise return -1
|
||||
|
||||
# :ascii_other [_start+0x120]
|
||||
# :ascii_other [_start+0x133]
|
||||
6A FF ; push !-1
|
||||
58 ; pop_rax # return = -1
|
||||
C3 ; ret
|
||||
|
||||
# :ascii_num [_start+0x124]
|
||||
# :ascii_num [_start+0x137]
|
||||
2C 30 ; sub_al, !48
|
||||
C3 ; ret
|
||||
|
||||
# :ascii_low [_start+0x127]
|
||||
# :ascii_low [_start+0x13A]
|
||||
2C 20 ; sub_al, !32 # convert to uppercase
|
||||
|
||||
# :ascii_high [_start+0x129]
|
||||
# :ascii_high [_start+0x13C]
|
||||
2C 37 ; sub_al, !55
|
||||
C3 ; ret
|
||||
|
||||
# Writes byte stored in al
|
||||
# :write_byte [_start+0x12C]
|
||||
# :write_byte [_start+0x13F]
|
||||
54 ; push_rsp # align stack to 16 bytes
|
||||
FF3424 ; push_[rsp] # align stack to 16 bytes
|
||||
4883E4 F0 ; and_rsp, !-16 # align stack to 16 bytes
|
||||
50 ; push_rax # make sure next call is aligned to 16 bytes
|
||||
4C89E9 ; mov_rcx,r13 # arg1 = fout
|
||||
6A 01 ; push !1 # size = 1
|
||||
4889E2 ; mov_rdx,rsp # arg2 = &size
|
||||
|
|
@ -346,11 +363,15 @@ D0 01 00 00 ; SizeOfRawData
|
|||
50 ; push_rax # allocate shadow stack space for UEFI function
|
||||
50 ; push_rax # allocate shadow stack space for UEFI function
|
||||
FF51 28 ; call_[rcx+BYTE] !40 # fout->write()
|
||||
4883C4 28 ; add_rsp, !40 # deallocate stack
|
||||
488B6424 38 ; mov_rsp,[rsp+BYTE] !56 # deallocate stack
|
||||
|
||||
C3 ; ret # return
|
||||
|
||||
# :read_byte [_start+0x143]
|
||||
# :read_byte [_start+0x160]
|
||||
54 ; push_rsp # align stack to 16 bytes
|
||||
FF3424 ; push_[rsp] # align stack to 16 bytes
|
||||
4883E4 F0 ; and_rsp, !-16 # align stack to 16 bytes
|
||||
50 ; push_rax # make sure next call is aligned to 16 bytes
|
||||
4C89E1 ; mov_rcx,r12 # arg1 = fin
|
||||
6A 01 ; push !1 # size = 1
|
||||
4889E2 ; mov_rdx,rsp # arg2 = &size
|
||||
|
|
@ -365,6 +386,7 @@ D0 01 00 00 ; SizeOfRawData
|
|||
58 ; pop_rax # deallocate stack
|
||||
58 ; pop_rax # save input to rax
|
||||
5E ; pop_rsi # save size to rsi
|
||||
488B6424 10 ; mov_rsp,[rsp+BYTE] !16 # deallocate stack
|
||||
|
||||
# If the file ended (0 bytes read) terminate
|
||||
85F6 ; test_esi,esi # if size = 0
|
||||
|
|
@ -372,8 +394,8 @@ D0 01 00 00 ; SizeOfRawData
|
|||
|
||||
C3 ; ret # return
|
||||
|
||||
# :terminate [_start+0x160]
|
||||
58 ; pop_rax # remove last return address from stack
|
||||
# :terminate [_start+0x18B]
|
||||
4C89FC ; mov_rsp,r15 # restore stack location for cleanup
|
||||
5E ; pop_rsi # restore rootdir
|
||||
415F ; pop_r15 # restore image_handle
|
||||
415E ; pop_r14 # restore system->boot
|
||||
|
|
@ -388,33 +410,43 @@ D0 01 00 00 ; SizeOfRawData
|
|||
FF51 10 ; call_[rcx+BYTE] !16 # rootdir->close()
|
||||
|
||||
4D89F8 ; mov_r8,r15 # arg3 = image_handle
|
||||
488D15 3C000000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
|
||||
488D15 48000000 ; lea_rdx,[rip+DWORD] %SIMPLE_FS_PROTOCOL # guid = &SIMPLE_FS_PROTOCOL
|
||||
4889D9 ; mov_rcx,rbx # arg1 = root_device
|
||||
4D31C9 ; xor_r9,r9 # arg4 = NULL
|
||||
4883EC 20 ; sub_rsp, !32 # allocate shadow stack space for UEFI function
|
||||
41FF96 20010000 ; call_[r14+DWORD] %288 # system->boot->close_protocol(root_device, &guid, image_handle, 0)
|
||||
|
||||
4D89F8 ; mov_r8,r15 # arg3 = image_handle
|
||||
488D15 11000000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
|
||||
488D15 1D000000 ; lea_rdx,[rip+DWORD] %LOADED_IMAGE_PROTOCOL # guid = &LOADED_IMAGE_PROTOCOL
|
||||
4C89C1 ; mov_rcx,r8 # arg1 = image_handle
|
||||
4D31C9 ; xor_r9,r9 # arg4 = NULL
|
||||
41FF96 20010000 ; call_[r14+DWORD] %288 # system->boot->close_protocol(image_handle, &guid, image_handle, 0)
|
||||
|
||||
# Restore non-volatile registers
|
||||
415F ; pop_r15
|
||||
415E ; pop_r14
|
||||
415D ; pop_r13
|
||||
415C ; pop_r12
|
||||
5E ; pop_rsi
|
||||
5F ; pop_rdi
|
||||
5B ; pop_rbx
|
||||
|
||||
4889EC ; mov_rsp,rbp # restore stack
|
||||
5D ; pop_rbp
|
||||
C3 ; ret # return to UEFI
|
||||
|
||||
|
||||
# Protocol GUIDs
|
||||
# :LOADED_IMAGE_PROTOCOL [_start+0x1B0]
|
||||
# :LOADED_IMAGE_PROTOCOL [_start+0x1E9]
|
||||
A1 31 1B 5B ; %0x5b1b31a1
|
||||
62 95 ; @0x9562
|
||||
D2 11 ; @0x11d2
|
||||
8E 3F 00 A0 C9 69 72 3B ; !0x8e !0x3f !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
|
||||
|
||||
# :SIMPLE_FS_PROTOCOL [_start+0x1C0]
|
||||
# :SIMPLE_FS_PROTOCOL [_start+0x1F9]
|
||||
22 5B 4E 96 ; %0x964e5b22
|
||||
59 64 ; @0x6459
|
||||
D2 11 ; @0x11d2
|
||||
8E 39 00 A0 C9 69 72 3B ; !0x8e !0x39 !0 !0xa0 !0xc9 !0x69 !0x72 !0x3b
|
||||
|
||||
# :ELF_end [_start+0x1D0]
|
||||
# :ELF_end [_start+0x209]
|
||||
|
|
|
|||
Loading…
Reference in New Issue