| /* ----------------------------------------------------------------------- |
| sysv.S - Copyright (c) 2000 Software AG |
| Copyright (c) 2008 Red Hat, Inc. |
| |
| S390 Foreign Function Interface |
| |
| Permission is hereby granted, free of charge, to any person obtaining |
| a copy of this software and associated documentation files (the |
| ``Software''), to deal in the Software without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Software, and to |
| permit persons to whom the Software is furnished to do so, subject to |
| the following conditions: |
| |
| The above copyright notice and this permission notice shall be included |
| in all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, |
| EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
| HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| DEALINGS IN THE SOFTWARE. |
| ----------------------------------------------------------------------- */ |
| |
| #define LIBFFI_ASM |
| #include <fficonfig.h> |
| #include <ffi.h> |
| |
| #ifndef __s390x__ |
| |
| .text |
| |
| # r2: cif->bytes |
| # r3: &ecif |
| # r4: ffi_prep_args |
| # r5: ret_type |
| # r6: ecif.rvalue |
| # ov: fn |
| |
| # This assumes we are using gas. |
| .globl ffi_call_SYSV |
| .type ffi_call_SYSV,%function |
| ffi_call_SYSV: |
| .LFB1: |
| stm %r6,%r15,24(%r15) # Save registers |
| .LCFI0: |
| basr %r13,0 # Set up base register |
| .Lbase: |
| lr %r11,%r15 # Set up frame pointer |
| .LCFI1: |
| sr %r15,%r2 |
| ahi %r15,-96-48 # Allocate stack |
| lr %r8,%r6 # Save ecif.rvalue |
| sr %r9,%r9 |
| ic %r9,.Ltable-.Lbase(%r13,%r5) # Load epilog address |
| l %r7,96(%r11) # Load function address |
| st %r11,0(%r15) # Set up back chain |
| ahi %r11,-48 # Register save area |
| .LCFI2: |
| |
| la %r2,96(%r15) # Save area |
| # r3 already holds &ecif |
| basr %r14,%r4 # Call ffi_prep_args |
| |
| lm %r2,%r6,0(%r11) # Load arguments |
| ld %f0,32(%r11) |
| ld %f2,40(%r11) |
| la %r14,0(%r13,%r9) # Set return address |
| br %r7 # ... and call function |
| |
| .LretNone: # Return void |
| l %r4,48+56(%r11) |
| lm %r6,%r15,48+24(%r11) |
| br %r4 |
| |
| .LretFloat: |
| l %r4,48+56(%r11) |
| ste %f0,0(%r8) # Return float |
| lm %r6,%r15,48+24(%r11) |
| br %r4 |
| |
| .LretDouble: |
| l %r4,48+56(%r11) |
| std %f0,0(%r8) # Return double |
| lm %r6,%r15,48+24(%r11) |
| br %r4 |
| |
| .LretInt32: |
| l %r4,48+56(%r11) |
| st %r2,0(%r8) # Return int |
| lm %r6,%r15,48+24(%r11) |
| br %r4 |
| |
| .LretInt64: |
| l %r4,48+56(%r11) |
| stm %r2,%r3,0(%r8) # Return long long |
| lm %r6,%r15,48+24(%r11) |
| br %r4 |
| |
| .Ltable: |
| .byte .LretNone-.Lbase # FFI390_RET_VOID |
| .byte .LretNone-.Lbase # FFI390_RET_STRUCT |
| .byte .LretFloat-.Lbase # FFI390_RET_FLOAT |
| .byte .LretDouble-.Lbase # FFI390_RET_DOUBLE |
| .byte .LretInt32-.Lbase # FFI390_RET_INT32 |
| .byte .LretInt64-.Lbase # FFI390_RET_INT64 |
| |
| .LFE1: |
| .ffi_call_SYSV_end: |
| .size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV |
| |
| |
| .globl ffi_closure_SYSV |
| .type ffi_closure_SYSV,%function |
| ffi_closure_SYSV: |
| .LFB2: |
| stm %r12,%r15,48(%r15) # Save registers |
| .LCFI10: |
| basr %r13,0 # Set up base register |
| .Lcbase: |
| stm %r2,%r6,8(%r15) # Save arguments |
| std %f0,64(%r15) |
| std %f2,72(%r15) |
| lr %r1,%r15 # Set up stack frame |
| ahi %r15,-96 |
| .LCFI11: |
| l %r12,.Lchelper-.Lcbase(%r13) # Get helper function |
| lr %r2,%r0 # Closure |
| la %r3,8(%r1) # GPRs |
| la %r4,64(%r1) # FPRs |
| la %r5,96(%r1) # Overflow |
| st %r1,0(%r15) # Set up back chain |
| |
| bas %r14,0(%r12,%r13) # Call helper |
| |
| l %r4,96+56(%r15) |
| ld %f0,96+64(%r15) # Load return registers |
| lm %r2,%r3,96+8(%r15) |
| lm %r12,%r15,96+48(%r15) |
| br %r4 |
| |
| .align 4 |
| .Lchelper: |
| .long ffi_closure_helper_SYSV-.Lcbase |
| |
| .LFE2: |
| |
| .ffi_closure_SYSV_end: |
| .size ffi_closure_SYSV,.ffi_closure_SYSV_end-ffi_closure_SYSV |
| |
| |
| .section .eh_frame,EH_FRAME_FLAGS,@progbits |
| .Lframe1: |
| .4byte .LECIE1-.LSCIE1 # Length of Common Information Entry |
| .LSCIE1: |
| .4byte 0x0 # CIE Identifier Tag |
| .byte 0x1 # CIE Version |
| .ascii "zR\0" # CIE Augmentation |
| .uleb128 0x1 # CIE Code Alignment Factor |
| .sleb128 -4 # CIE Data Alignment Factor |
| .byte 0xe # CIE RA Column |
| .uleb128 0x1 # Augmentation size |
| .byte 0x1b # FDE Encoding (pcrel sdata4) |
| .byte 0xc # DW_CFA_def_cfa |
| .uleb128 0xf |
| .uleb128 0x60 |
| .align 4 |
| .LECIE1: |
| .LSFDE1: |
| .4byte .LEFDE1-.LASFDE1 # FDE Length |
| .LASFDE1: |
| .4byte .LASFDE1-.Lframe1 # FDE CIE offset |
| .4byte .LFB1-. # FDE initial location |
| .4byte .LFE1-.LFB1 # FDE address range |
| .uleb128 0x0 # Augmentation size |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI0-.LFB1 |
| .byte 0x8f # DW_CFA_offset, column 0xf |
| .uleb128 0x9 |
| .byte 0x8e # DW_CFA_offset, column 0xe |
| .uleb128 0xa |
| .byte 0x8d # DW_CFA_offset, column 0xd |
| .uleb128 0xb |
| .byte 0x8c # DW_CFA_offset, column 0xc |
| .uleb128 0xc |
| .byte 0x8b # DW_CFA_offset, column 0xb |
| .uleb128 0xd |
| .byte 0x8a # DW_CFA_offset, column 0xa |
| .uleb128 0xe |
| .byte 0x89 # DW_CFA_offset, column 0x9 |
| .uleb128 0xf |
| .byte 0x88 # DW_CFA_offset, column 0x8 |
| .uleb128 0x10 |
| .byte 0x87 # DW_CFA_offset, column 0x7 |
| .uleb128 0x11 |
| .byte 0x86 # DW_CFA_offset, column 0x6 |
| .uleb128 0x12 |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI1-.LCFI0 |
| .byte 0xd # DW_CFA_def_cfa_register |
| .uleb128 0xb |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI2-.LCFI1 |
| .byte 0xe # DW_CFA_def_cfa_offset |
| .uleb128 0x90 |
| .align 4 |
| .LEFDE1: |
| .LSFDE2: |
| .4byte .LEFDE2-.LASFDE2 # FDE Length |
| .LASFDE2: |
| .4byte .LASFDE2-.Lframe1 # FDE CIE offset |
| .4byte .LFB2-. # FDE initial location |
| .4byte .LFE2-.LFB2 # FDE address range |
| .uleb128 0x0 # Augmentation size |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI10-.LFB2 |
| .byte 0x8f # DW_CFA_offset, column 0xf |
| .uleb128 0x9 |
| .byte 0x8e # DW_CFA_offset, column 0xe |
| .uleb128 0xa |
| .byte 0x8d # DW_CFA_offset, column 0xd |
| .uleb128 0xb |
| .byte 0x8c # DW_CFA_offset, column 0xc |
| .uleb128 0xc |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI11-.LCFI10 |
| .byte 0xe # DW_CFA_def_cfa_offset |
| .uleb128 0xc0 |
| .align 4 |
| .LEFDE2: |
| |
| #else |
| |
| .text |
| |
| # r2: cif->bytes |
| # r3: &ecif |
| # r4: ffi_prep_args |
| # r5: ret_type |
| # r6: ecif.rvalue |
| # ov: fn |
| |
| # This assumes we are using gas. |
| .globl ffi_call_SYSV |
| .type ffi_call_SYSV,%function |
| ffi_call_SYSV: |
| .LFB1: |
| stmg %r6,%r15,48(%r15) # Save registers |
| .LCFI0: |
| larl %r13,.Lbase # Set up base register |
| lgr %r11,%r15 # Set up frame pointer |
| .LCFI1: |
| sgr %r15,%r2 |
| aghi %r15,-160-80 # Allocate stack |
| lgr %r8,%r6 # Save ecif.rvalue |
| llgc %r9,.Ltable-.Lbase(%r13,%r5) # Load epilog address |
| lg %r7,160(%r11) # Load function address |
| stg %r11,0(%r15) # Set up back chain |
| aghi %r11,-80 # Register save area |
| .LCFI2: |
| |
| la %r2,160(%r15) # Save area |
| # r3 already holds &ecif |
| basr %r14,%r4 # Call ffi_prep_args |
| |
| lmg %r2,%r6,0(%r11) # Load arguments |
| ld %f0,48(%r11) |
| ld %f2,56(%r11) |
| ld %f4,64(%r11) |
| ld %f6,72(%r11) |
| la %r14,0(%r13,%r9) # Set return address |
| br %r7 # ... and call function |
| |
| .Lbase: |
| .LretNone: # Return void |
| lg %r4,80+112(%r11) |
| lmg %r6,%r15,80+48(%r11) |
| br %r4 |
| |
| .LretFloat: |
| lg %r4,80+112(%r11) |
| ste %f0,0(%r8) # Return float |
| lmg %r6,%r15,80+48(%r11) |
| br %r4 |
| |
| .LretDouble: |
| lg %r4,80+112(%r11) |
| std %f0,0(%r8) # Return double |
| lmg %r6,%r15,80+48(%r11) |
| br %r4 |
| |
| .LretInt32: |
| lg %r4,80+112(%r11) |
| st %r2,0(%r8) # Return int |
| lmg %r6,%r15,80+48(%r11) |
| br %r4 |
| |
| .LretInt64: |
| lg %r4,80+112(%r11) |
| stg %r2,0(%r8) # Return long |
| lmg %r6,%r15,80+48(%r11) |
| br %r4 |
| |
| .Ltable: |
| .byte .LretNone-.Lbase # FFI390_RET_VOID |
| .byte .LretNone-.Lbase # FFI390_RET_STRUCT |
| .byte .LretFloat-.Lbase # FFI390_RET_FLOAT |
| .byte .LretDouble-.Lbase # FFI390_RET_DOUBLE |
| .byte .LretInt32-.Lbase # FFI390_RET_INT32 |
| .byte .LretInt64-.Lbase # FFI390_RET_INT64 |
| |
| .LFE1: |
| .ffi_call_SYSV_end: |
| .size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV |
| |
| |
| .globl ffi_closure_SYSV |
| .type ffi_closure_SYSV,%function |
| ffi_closure_SYSV: |
| .LFB2: |
| stmg %r14,%r15,112(%r15) # Save registers |
| .LCFI10: |
| stmg %r2,%r6,16(%r15) # Save arguments |
| std %f0,128(%r15) |
| std %f2,136(%r15) |
| std %f4,144(%r15) |
| std %f6,152(%r15) |
| lgr %r1,%r15 # Set up stack frame |
| aghi %r15,-160 |
| .LCFI11: |
| lgr %r2,%r0 # Closure |
| la %r3,16(%r1) # GPRs |
| la %r4,128(%r1) # FPRs |
| la %r5,160(%r1) # Overflow |
| stg %r1,0(%r15) # Set up back chain |
| |
| brasl %r14,ffi_closure_helper_SYSV # Call helper |
| |
| lg %r14,160+112(%r15) |
| ld %f0,160+128(%r15) # Load return registers |
| lg %r2,160+16(%r15) |
| la %r15,160(%r15) |
| br %r14 |
| .LFE2: |
| |
| .ffi_closure_SYSV_end: |
| .size ffi_closure_SYSV,.ffi_closure_SYSV_end-ffi_closure_SYSV |
| |
| |
| |
| .section .eh_frame,EH_FRAME_FLAGS,@progbits |
| .Lframe1: |
| .4byte .LECIE1-.LSCIE1 # Length of Common Information Entry |
| .LSCIE1: |
| .4byte 0x0 # CIE Identifier Tag |
| .byte 0x1 # CIE Version |
| .ascii "zR\0" # CIE Augmentation |
| .uleb128 0x1 # CIE Code Alignment Factor |
| .sleb128 -8 # CIE Data Alignment Factor |
| .byte 0xe # CIE RA Column |
| .uleb128 0x1 # Augmentation size |
| .byte 0x1b # FDE Encoding (pcrel sdata4) |
| .byte 0xc # DW_CFA_def_cfa |
| .uleb128 0xf |
| .uleb128 0xa0 |
| .align 8 |
| .LECIE1: |
| .LSFDE1: |
| .4byte .LEFDE1-.LASFDE1 # FDE Length |
| .LASFDE1: |
| .4byte .LASFDE1-.Lframe1 # FDE CIE offset |
| .4byte .LFB1-. # FDE initial location |
| .4byte .LFE1-.LFB1 # FDE address range |
| .uleb128 0x0 # Augmentation size |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI0-.LFB1 |
| .byte 0x8f # DW_CFA_offset, column 0xf |
| .uleb128 0x5 |
| .byte 0x8e # DW_CFA_offset, column 0xe |
| .uleb128 0x6 |
| .byte 0x8d # DW_CFA_offset, column 0xd |
| .uleb128 0x7 |
| .byte 0x8c # DW_CFA_offset, column 0xc |
| .uleb128 0x8 |
| .byte 0x8b # DW_CFA_offset, column 0xb |
| .uleb128 0x9 |
| .byte 0x8a # DW_CFA_offset, column 0xa |
| .uleb128 0xa |
| .byte 0x89 # DW_CFA_offset, column 0x9 |
| .uleb128 0xb |
| .byte 0x88 # DW_CFA_offset, column 0x8 |
| .uleb128 0xc |
| .byte 0x87 # DW_CFA_offset, column 0x7 |
| .uleb128 0xd |
| .byte 0x86 # DW_CFA_offset, column 0x6 |
| .uleb128 0xe |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI1-.LCFI0 |
| .byte 0xd # DW_CFA_def_cfa_register |
| .uleb128 0xb |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI2-.LCFI1 |
| .byte 0xe # DW_CFA_def_cfa_offset |
| .uleb128 0xf0 |
| .align 8 |
| .LEFDE1: |
| .LSFDE2: |
| .4byte .LEFDE2-.LASFDE2 # FDE Length |
| .LASFDE2: |
| .4byte .LASFDE2-.Lframe1 # FDE CIE offset |
| .4byte .LFB2-. # FDE initial location |
| .4byte .LFE2-.LFB2 # FDE address range |
| .uleb128 0x0 # Augmentation size |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI10-.LFB2 |
| .byte 0x8f # DW_CFA_offset, column 0xf |
| .uleb128 0x5 |
| .byte 0x8e # DW_CFA_offset, column 0xe |
| .uleb128 0x6 |
| .byte 0x4 # DW_CFA_advance_loc4 |
| .4byte .LCFI11-.LCFI10 |
| .byte 0xe # DW_CFA_def_cfa_offset |
| .uleb128 0x140 |
| .align 8 |
| .LEFDE2: |
| |
| #endif |
| |
| #if defined __ELF__ && defined __linux__ |
| .section .note.GNU-stack,"",@progbits |
| #endif |
