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+ support i8086 far data memory models in fpc_longJmp

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git-svn-id: trunk@27413 -
This commit is contained in:
nickysn 2014-03-31 15:53:12 +00:00
parent 1643c175f2
commit c0cb3643f8
1 changed files with 26 additions and 7 deletions
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19
rtl/i8086/setjump.inc
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@ -42,17 +42,27 @@ Procedure fpc_longJmp (Var S : Jmp_buf; value : smallint); assembler;nostackfram
asm asm
mov si, sp mov si, sp
{$ifdef FPC_X86_DATA_NEAR}
mov bx, ss:[si + 4 + extra_param_offset] // S mov bx, ss:[si + 4 + extra_param_offset] // S
{$else FPC_X86_DATA_NEAR}
les bx, ss:[si + 4 + extra_param_offset] // S
{$endif FPC_X86_DATA_NEAR}
mov ax, ss:[si + 2 + extra_param_offset] // value mov ax, ss:[si + 2 + extra_param_offset] // value
test ax, ax test ax, ax
jnz @@L1 jnz @@L1
inc ax inc ax
@@L1: @@L1:
{$ifdef FPC_X86_DATA_NEAR}
mov bp, word [bx + Jmp_buf.bp] mov bp, word [bx + Jmp_buf.bp]
mov sp, word [bx + Jmp_buf.sp] mov sp, word [bx + Jmp_buf.sp]
{$else FPC_X86_DATA_NEAR}
mov bp, word es:[bx + Jmp_buf.bp]
mov sp, word es:[bx + Jmp_buf.sp]
{$endif FPC_X86_DATA_NEAR}
// we should also clear the fpu // we should also clear the fpu
// fninit no must be done elsewhere PM // fninit no must be done elsewhere PM
// or we should reset the control word also // or we should reset the control word also
{$ifdef FPC_X86_DATA_NEAR}
{$ifdef FPC_X86_CODE_NEAR} {$ifdef FPC_X86_CODE_NEAR}
jmp word [bx + Jmp_buf.ip] jmp word [bx + Jmp_buf.ip]
{$else FPC_X86_CODE_NEAR} {$else FPC_X86_CODE_NEAR}
@ -60,4 +70,13 @@ asm
// jmp far [bx + Jmp_buf.ip] // jmp far [bx + Jmp_buf.ip]
db 0FFh, 06Fh, Jmp_buf.ip db 0FFh, 06Fh, Jmp_buf.ip
{$endif FPC_X86_CODE_NEAR} {$endif FPC_X86_CODE_NEAR}
{$else FPC_X86_DATA_NEAR}
{$ifdef FPC_X86_CODE_NEAR}
jmp word es:[bx + Jmp_buf.ip]
{$else FPC_X86_CODE_NEAR}
// the inline asm doesn't support jmp far yet, so we use db for now
// jmp far es:[bx + Jmp_buf.ip]
db 026h, 0FFh, 06Fh, Jmp_buf.ip
{$endif FPC_X86_CODE_NEAR}
{$endif FPC_X86_DATA_NEAR}
end; end;