From 0007bad95c3e519766fffe00c0dc61b0536fabb4 Mon Sep 17 00:00:00 2001 From: Liryna Date: Tue, 18 Jun 2024 15:10:02 +0000 Subject: [PATCH] Convert ARM64 armasm to armclang The armasm legacy assembler is deprecated. The code was migrated to the GNU syntax (used by armclang). https://developer.arm.com/documentation/100068/0621/Migrating-from-armasm-to-the-armclang-Integrated-Assembler --- src/asm/jump_arm64_aapcs_pe_armclang.S | 184 ++++++++++++----------- src/asm/make_arm64_aapcs_pe_armclang.S | 169 +++++++++++---------- src/asm/ontop_arm64_aapcs_pe_armclang.S | 186 ++++++++++++------------ 3 files changed, 283 insertions(+), 256 deletions(-) diff --git a/src/asm/jump_arm64_aapcs_pe_armclang.S b/src/asm/jump_arm64_aapcs_pe_armclang.S index 3100243d..0ad7ac1f 100644 --- a/src/asm/jump_arm64_aapcs_pe_armclang.S +++ b/src/asm/jump_arm64_aapcs_pe_armclang.S @@ -1,76 +1,82 @@ -; Copyright Edward Nevill + Oliver Kowalke 2015 -; Distributed under the Boost Software License, Version 1.0. -; (See accompanying file LICENSE_1_0.txt or copy at -; http://www.boost.org/LICENSE_1_0.txt) - -;******************************************************* -;* * -;* ------------------------------------------------- * -;* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * -;* ------------------------------------------------- * -;* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| * -;* ------------------------------------------------- * -;* | d8 | d9 | d10 | d11 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * -;* ------------------------------------------------- * -;* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| * -;* ------------------------------------------------- * -;* | d12 | d13 | d14 | d15 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | * -;* ------------------------------------------------- * -;* | 0x40| 0x44| 0x48| 0x4c| 0x50| 0x54| 0x58| 0x5c| * -;* ------------------------------------------------- * -;* | x19 | x20 | x21 | x22 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | * -;* ------------------------------------------------- * -;* | 0x60| 0x64| 0x68| 0x6c| 0x70| 0x74| 0x78| 0x7c| * -;* ------------------------------------------------- * -;* | x23 | x24 | x25 | x26 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | * -;* ------------------------------------------------- * -;* | 0x80| 0x84| 0x88| 0x8c| 0x90| 0x94| 0x98| 0x9c| * -;* ------------------------------------------------- * -;* | x27 | x28 | FP | LR | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | * -;* ------------------------------------------------- * -;* | 0xa0| 0xa4| 0xa8| 0xac| 0xb0| 0xb4| 0xb8| 0xbc| * -;* ------------------------------------------------- * -;* | fiber data| base | limit | dealloc | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 48 | 49 | 50 | 51 | | | * -;* ------------------------------------------------- * -;* | 0xc0| 0xc4| 0xc8| 0xcc| | | * -;* ------------------------------------------------- * -;* | PC | align | | | * -;* ------------------------------------------------- * -;* * -;******************************************************* - - AREA |.text|, CODE, READONLY, ALIGN=4, CODEALIGN - EXPORT jump_fcontext - -jump_fcontext proc - ; prepare stack for GP + FPU +/* + Copyright Edward Nevill + Oliver Kowalke 2015 + Distributed under the Boost Software License, Version 1.0. + (See accompanying file LICENSE_1_0.txt or copy at + http://www.boost.org/LICENSE_1_0.txt) +*/ + +/****************************************************** +* * +* ------------------------------------------------- * +* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * +* ------------------------------------------------- * +* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| * +* ------------------------------------------------- * +* | d8 | d9 | d10 | d11 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * +* ------------------------------------------------- * +* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| * +* ------------------------------------------------- * +* | d12 | d13 | d14 | d15 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | * +* ------------------------------------------------- * +* | 0x40| 0x44| 0x48| 0x4c| 0x50| 0x54| 0x58| 0x5c| * +* ------------------------------------------------- * +* | x19 | x20 | x21 | x22 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | * +* ------------------------------------------------- * +* | 0x60| 0x64| 0x68| 0x6c| 0x70| 0x74| 0x78| 0x7c| * +* ------------------------------------------------- * +* | x23 | x24 | x25 | x26 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | * +* ------------------------------------------------- * +* | 0x80| 0x84| 0x88| 0x8c| 0x90| 0x94| 0x98| 0x9c| * +* ------------------------------------------------- * +* | x27 | x28 | FP | LR | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | * +* ------------------------------------------------- * +* | 0xa0| 0xa4| 0xa8| 0xac| 0xb0| 0xb4| 0xb8| 0xbc| * +* ------------------------------------------------- * +* | fiber data| base | limit | dealloc | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 48 | 49 | 50 | 51 | | | * +* ------------------------------------------------- * +* | 0xc0| 0xc4| 0xc8| 0xcc| | | * +* ------------------------------------------------- * +* | PC | align | | | * +* ------------------------------------------------- * +* * +*******************************************************/ + +.file "jump_arm64_aapcs_pe_armclang.S" +.text +.balign 4 + +.def jump_fcontext; .scl 2; .type 32; .endef +.seh_proc jump_fcontext +jump_fcontext: +.seh_endprologue + // prepare stack for GP + FPU sub sp, sp, #0xd0 - ; save d8 - d15 + // save d8 - d15 stp d8, d9, [sp, #0x00] stp d10, d11, [sp, #0x10] stp d12, d13, [sp, #0x20] stp d14, d15, [sp, #0x30] - ; save x19-x30 + // save x19-x30 stp x19, x20, [sp, #0x40] stp x21, x22, [sp, #0x50] stp x23, x24, [sp, #0x60] @@ -78,38 +84,38 @@ jump_fcontext proc stp x27, x28, [sp, #0x80] stp x29, x30, [sp, #0x90] - ; save LR as PC + // save LR as PC str x30, [sp, #0xc0] - ; save current stack base and limit - ldp x5, x6, [x18, #0x08] ; TeStackBase and TeStackLimit at ksarm64.h + // save current stack base and limit + ldp x5, x6, [x18, #0x08] // TeStackBase and TeStackLimit at ksarm64.h stp x5, x6, [sp, #0xa0] - ; save current fiber data and deallocation stack - ldr x5, [x18, #0x1478] ; TeDeallocationStack at ksarm64.h - ldr x6, [x18, #0x20] ; TeFiberData at ksarm64.h + // save current fiber data and deallocation stack + ldr x5, [x18, #0x1478] // TeDeallocationStack at ksarm64.h + ldr x6, [x18, #0x20] // TeFiberData at ksarm64.h stp x5, x6, [sp, #0xb0] - ; store RSP (pointing to context-data) in X0 + // store RSP (pointing to context-data) in X0 mov x4, sp - ; restore RSP (pointing to context-data) from X1 + // restore RSP (pointing to context-data) from X1 mov sp, x0 - ; restore stack base and limit + // restore stack base and limit ldp x5, x6, [sp, #0xa0] - stp x5, x6, [x18, #0x08] ; TeStackBase and TeStackLimit at ksarm64.h - ; restore fiber data and deallocation stack + stp x5, x6, [x18, #0x08] // TeStackBase and TeStackLimit at ksarm64.h + // restore fiber data and deallocation stack ldp x5, x6, [sp, #0xb0] - str x5, [x18, #0x1478] ; TeDeallocationStack at ksarm64.h - str x6, [x18, #0x20] ; TeFiberData at ksarm64.h + str x5, [x18, #0x1478] // TeDeallocationStack at ksarm64.h + str x6, [x18, #0x20] // TeFiberData at ksarm64.h - ; load d8 - d15 + // load d8 - d15 ldp d8, d9, [sp, #0x00] ldp d10, d11, [sp, #0x10] ldp d12, d13, [sp, #0x20] ldp d14, d15, [sp, #0x30] - ; load x19-x30 + // load x19-x30 ldp x19, x20, [sp, #0x40] ldp x21, x22, [sp, #0x50] ldp x23, x24, [sp, #0x60] @@ -117,17 +123,19 @@ jump_fcontext proc ldp x27, x28, [sp, #0x80] ldp x29, x30, [sp, #0x90] - ; return transfer_t from jump - ; pass transfer_t as first arg in context function - ; X0 == FCTX, X1 == DATA + // return transfer_t from jump + // pass transfer_t as first arg in context function + // X0 == FCTX, X1 == DATA mov x0, x4 - ; load pc + // load pc ldr x4, [sp, #0xc0] - ; restore stack from GP + FPU + // restore stack from GP + FPU add sp, sp, #0xd0 ret x4 - ENDP - END \ No newline at end of file +.seh_endproc + +.section .drectve +.ascii " -export:\"jump_fcontext\"" diff --git a/src/asm/make_arm64_aapcs_pe_armclang.S b/src/asm/make_arm64_aapcs_pe_armclang.S index 50f9b698..cab00e92 100644 --- a/src/asm/make_arm64_aapcs_pe_armclang.S +++ b/src/asm/make_arm64_aapcs_pe_armclang.S @@ -1,107 +1,118 @@ -; Copyright Edward Nevill + Oliver Kowalke 2015 -; Distributed under the Boost Software License, Version 1.0. -; (See accompanying file LICENSE_1_0.txt or copy at -; http://www.boost.org/LICENSE_1_0.txt) +/* + Copyright Edward Nevill + Oliver Kowalke 2015 + Distributed under the Boost Software License, Version 1.0. + (See accompanying file LICENSE_1_0.txt or copy at + http://www.boost.org/LICENSE_1_0.txt) +*/ -;******************************************************* -;* * -;* ------------------------------------------------- * -;* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * -;* ------------------------------------------------- * -;* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| * -;* ------------------------------------------------- * -;* | d8 | d9 | d10 | d11 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * -;* ------------------------------------------------- * -;* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| * -;* ------------------------------------------------- * -;* | d12 | d13 | d14 | d15 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | * -;* ------------------------------------------------- * -;* | 0x40| 0x44| 0x48| 0x4c| 0x50| 0x54| 0x58| 0x5c| * -;* ------------------------------------------------- * -;* | x19 | x20 | x21 | x22 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | * -;* ------------------------------------------------- * -;* | 0x60| 0x64| 0x68| 0x6c| 0x70| 0x74| 0x78| 0x7c| * -;* ------------------------------------------------- * -;* | x23 | x24 | x25 | x26 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | * -;* ------------------------------------------------- * -;* | 0x80| 0x84| 0x88| 0x8c| 0x90| 0x94| 0x98| 0x9c| * -;* ------------------------------------------------- * -;* | x27 | x28 | FP | LR | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | * -;* ------------------------------------------------- * -;* | 0xa0| 0xa4| 0xa8| 0xac| 0xb0| 0xb4| 0xb8| 0xbc| * -;* ------------------------------------------------- * -;* | base | limit | dealloc | fiber data| * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 48 | 49 | 50 | 51 | | | * -;* ------------------------------------------------- * -;* | 0xc0| 0xc4| 0xc8| 0xcc| | | * -;* ------------------------------------------------- * -;* | PC | align | | | * -;* ------------------------------------------------- * -;* * -;******************************************************* +/****************************************************** +* * +* ------------------------------------------------- * +* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * +* ------------------------------------------------- * +* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| * +* ------------------------------------------------- * +* | d8 | d9 | d10 | d11 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * +* ------------------------------------------------- * +* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| * +* ------------------------------------------------- * +* | d12 | d13 | d14 | d15 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | * +* ------------------------------------------------- * +* | 0x40| 0x44| 0x48| 0x4c| 0x50| 0x54| 0x58| 0x5c| * +* ------------------------------------------------- * +* | x19 | x20 | x21 | x22 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | * +* ------------------------------------------------- * +* | 0x60| 0x64| 0x68| 0x6c| 0x70| 0x74| 0x78| 0x7c| * +* ------------------------------------------------- * +* | x23 | x24 | x25 | x26 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | * +* ------------------------------------------------- * +* | 0x80| 0x84| 0x88| 0x8c| 0x90| 0x94| 0x98| 0x9c| * +* ------------------------------------------------- * +* | x27 | x28 | FP | LR | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | * +* ------------------------------------------------- * +* | 0xa0| 0xa4| 0xa8| 0xac| 0xb0| 0xb4| 0xb8| 0xbc| * +* ------------------------------------------------- * +* | base | limit | dealloc | fiber data| * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 48 | 49 | 50 | 51 | | | * +* ------------------------------------------------- * +* | 0xc0| 0xc4| 0xc8| 0xcc| | | * +* ------------------------------------------------- * +* | PC | align | | | * +* ------------------------------------------------- * +* * +*******************************************************/ - AREA |.text|, CODE, READONLY, ALIGN=4, CODEALIGN - EXPORT make_fcontext - IMPORT _exit +.file "make_arm64_aapcs_pe_armclang.S" +.text +.balign 4 -make_fcontext proc - ; save stack top address to x3 +.globl make_fcontext +.def make_fcontext; .scl 2; .type 32; .endef +.seh_proc make_fcontext +make_fcontext: +.seh_endprologue + // save stack top address to x3 mov x3, x0 - ; shift address in x0 (allocated stack) to lower 16 byte boundary + // shift address in x0 (allocated stack) to lower 16 byte boundary and x0, x0, ~0xF - ; reserve space for context-data on context-stack + // reserve space for context-data on context-stack sub x0, x0, #0xd0 - ; save top address of context_stack as 'base' + // save top address of context_stack as 'base' str x3, [x0, #0xa0] - ; save bottom address of context-stack as 'limit' and 'dealloction stack' + // save bottom address of context-stack as 'limit' and 'dealloction stack' sub x3, x3, x1 stp x3, x3, [x0, #0xa8] - ; save 0 as 'fiber data' + // save 0 as 'fiber data' str xzr, [x0, #0xb8] - ; third arg of make_fcontext() == address of context-function - ; store address as x19 for trampoline + // third arg of make_fcontext() == address of context-function + // store address as x19 for trampoline str x2, [x0, #0x40] - ; store trampoline address as pc + // store trampoline address as pc adr x2, trampoline str x2, [x0, #0xc0] - ; save address of finish as return-address for context-function - ; will be entered after context-function returns (LR register) + // save address of finish as return-address for context-function + // will be entered after context-function returns (LR register) adr x1, finish str x1, [x0, #0x98] - ret x30 ; return pointer to context-data (x0) + ret x30 // return pointer to context-data (x0) -trampoline +trampoline: stp fp, lr, [sp, #-0x10]! mov fp, sp blr x19 -finish - ; exit code is zero +finish: + // exit code is zero mov x0, #0 - ; exit application + // exit application bl _exit - ENDP - END + +.seh_endproc + +.def _exit; .scl 2; .type 32; .endef /* standard C library function */ + +.section .drectve +.ascii " -export:\"make_fcontext\"" diff --git a/src/asm/ontop_arm64_aapcs_pe_armclang.S b/src/asm/ontop_arm64_aapcs_pe_armclang.S index dc522c0a..06889fdb 100644 --- a/src/asm/ontop_arm64_aapcs_pe_armclang.S +++ b/src/asm/ontop_arm64_aapcs_pe_armclang.S @@ -1,76 +1,82 @@ -; Copyright Edward Nevill + Oliver Kowalke 2015 -; Distributed under the Boost Software License, Version 1.0. -; (See accompanying file LICENSE_1_0.txt or copy at -; http://www.boost.org/LICENSE_1_0.txt) - -;******************************************************* -;* * -;* ------------------------------------------------- * -;* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * -;* ------------------------------------------------- * -;* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| * -;* ------------------------------------------------- * -;* | d8 | d9 | d10 | d11 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * -;* ------------------------------------------------- * -;* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| * -;* ------------------------------------------------- * -;* | d12 | d13 | d14 | d15 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | * -;* ------------------------------------------------- * -;* | 0x40| 0x44| 0x48| 0x4c| 0x50| 0x54| 0x58| 0x5c| * -;* ------------------------------------------------- * -;* | x19 | x20 | x21 | x22 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | * -;* ------------------------------------------------- * -;* | 0x60| 0x64| 0x68| 0x6c| 0x70| 0x74| 0x78| 0x7c| * -;* ------------------------------------------------- * -;* | x23 | x24 | x25 | x26 | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | * -;* ------------------------------------------------- * -;* | 0x80| 0x84| 0x88| 0x8c| 0x90| 0x94| 0x98| 0x9c| * -;* ------------------------------------------------- * -;* | x27 | x28 | FP | LR | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | * -;* ------------------------------------------------- * -;* | 0xa0| 0xa4| 0xa8| 0xac| 0xb0| 0xb4| 0xb8| 0xbc| * -;* ------------------------------------------------- * -;* | fiber data| base | limit | dealloc | * -;* ------------------------------------------------- * -;* ------------------------------------------------- * -;* | 48 | 49 | 50 | 51 | | | * -;* ------------------------------------------------- * -;* | 0xc0| 0xc4| 0xc8| 0xcc| | | * -;* ------------------------------------------------- * -;* | PC | align | | | * -;* ------------------------------------------------- * -;* * -;******************************************************* - - AREA |.text|, CODE, READONLY, ALIGN=4, CODEALIGN - EXPORT ontop_fcontext - -ontop_fcontext proc BOOST_CONTEXT_EXPORT - ; prepare stack for GP + FPU +/* + Copyright Edward Nevill + Oliver Kowalke 2015 + Distributed under the Boost Software License, Version 1.0. + (See accompanying file LICENSE_1_0.txt or copy at + http://www.boost.org/LICENSE_1_0.txt) +*/ + +/****************************************************** +* * +* ------------------------------------------------- * +* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | * +* ------------------------------------------------- * +* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| * +* ------------------------------------------------- * +* | d8 | d9 | d10 | d11 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * +* ------------------------------------------------- * +* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| * +* ------------------------------------------------- * +* | d12 | d13 | d14 | d15 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | * +* ------------------------------------------------- * +* | 0x40| 0x44| 0x48| 0x4c| 0x50| 0x54| 0x58| 0x5c| * +* ------------------------------------------------- * +* | x19 | x20 | x21 | x22 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | * +* ------------------------------------------------- * +* | 0x60| 0x64| 0x68| 0x6c| 0x70| 0x74| 0x78| 0x7c| * +* ------------------------------------------------- * +* | x23 | x24 | x25 | x26 | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | * +* ------------------------------------------------- * +* | 0x80| 0x84| 0x88| 0x8c| 0x90| 0x94| 0x98| 0x9c| * +* ------------------------------------------------- * +* | x27 | x28 | FP | LR | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | * +* ------------------------------------------------- * +* | 0xa0| 0xa4| 0xa8| 0xac| 0xb0| 0xb4| 0xb8| 0xbc| * +* ------------------------------------------------- * +* | fiber data| base | limit | dealloc | * +* ------------------------------------------------- * +* ------------------------------------------------- * +* | 48 | 49 | 50 | 51 | | | * +* ------------------------------------------------- * +* | 0xc0| 0xc4| 0xc8| 0xcc| | | * +* ------------------------------------------------- * +* | PC | align | | | * +* ------------------------------------------------- * +* * +*******************************************************/ + +.file "ontop_arm64_aapcs_pe_armclang.S" +.text +.balign 4 + +.def ontop_fcontext; .scl 2; .type 32; .endef +.seh_proc ontop_fcontext +ontop_fcontext: +.seh_endprologue + // prepare stack for GP + FPU sub sp, sp, #0xd0 - ; save d8 - d15 + // save d8 - d15 stp d8, d9, [sp, #0x00] stp d10, d11, [sp, #0x10] stp d12, d13, [sp, #0x20] stp d14, d15, [sp, #0x30] - ; save x19-x30 + // save x19-x30 stp x19, x20, [sp, #0x40] stp x21, x22, [sp, #0x50] stp x23, x24, [sp, #0x60] @@ -78,38 +84,38 @@ ontop_fcontext proc BOOST_CONTEXT_EXPORT stp x27, x28, [sp, #0x80] stp x29, x30, [sp, #0x90] - ; save LR as PC + // save LR as PC str x30, [sp, #0xc0] - ; save current stack base and limit - ldp x5, x6, [x18, #0x08] ; TeStackBase and TeStackLimit at ksarm64.h + // save current stack base and limit + ldp x5, x6, [x18, #0x08] // TeStackBase and TeStackLimit at ksarm64.h stp x5, x6, [sp, #0xa0] - ; save current fiber data and deallocation stack - ldr x5, [x18, #0x1478] ; TeDeallocationStack at ksarm64.h - ldr x6, [x18, #0x20] ; TeFiberData at ksarm64.h + // save current fiber data and deallocation stack + ldr x5, [x18, #0x1478] // TeDeallocationStack at ksarm64.h + ldr x6, [x18, #0x20] // TeFiberData at ksarm64.h stp x5, x6, [sp, #0xb0] - ; store RSP (pointing to context-data) in X5 + // store RSP (pointing to context-data) in X5 mov x4, sp - ; restore RSP (pointing to context-data) from X1 + // restore RSP (pointing to context-data) from X1 mov sp, x0 - ; restore stack base and limit + // restore stack base and limit ldp x5, x6, [sp, #0xa0] - stp x5, x6, [x18, #0x08] ; TeStackBase and TeStackLimit at ksarm64.h - ; restore fiber data and deallocation stack + stp x5, x6, [x18, #0x08] // TeStackBase and TeStackLimit at ksarm64.h + // restore fiber data and deallocation stack ldp x5, x6, [sp, #0xb0] - str x5, [x18, #0x1478] ; TeDeallocationStack at ksarm64.h - str x6, [x18, #0x20] ; TeFiberData at ksarm64.h + str x5, [x18, #0x1478] // TeDeallocationStack at ksarm64.h + str x6, [x18, #0x20] // TeFiberData at ksarm64.h - ; load d8 - d15 + // load d8 - d15 ldp d8, d9, [sp, #0x00] ldp d10, d11, [sp, #0x10] ldp d12, d13, [sp, #0x20] ldp d14, d15, [sp, #0x30] - ; load x19-x30 + // load x19-x30 ldp x19, x20, [sp, #0x40] ldp x21, x22, [sp, #0x50] ldp x23, x24, [sp, #0x60] @@ -117,16 +123,18 @@ ontop_fcontext proc BOOST_CONTEXT_EXPORT ldp x27, x28, [sp, #0x80] ldp x29, x30, [sp, #0x90] - ; return transfer_t from jump - ; pass transfer_t as first arg in context function - ; X0 == FCTX, X1 == DATA + // return transfer_t from jump + // pass transfer_t as first arg in context function + // X0 == FCTX, X1 == DATA mov x0, x4 - ; skip pc - ; restore stack from GP + FPU + // skip pc + // restore stack from GP + FPU add sp, sp, #0xc0 - ; jump to ontop-function + // jump to ontop-function ret x2 - ENDP - END +.seh_endproc + +.section .drectve +.ascii " -export:\"_ontop_fcontext\""