diff options
Diffstat (limited to 'c/src/exec/score/cpu/m68k/m68k.h')
| -rw-r--r-- | c/src/exec/score/cpu/m68k/m68k.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/c/src/exec/score/cpu/m68k/m68k.h b/c/src/exec/score/cpu/m68k/m68k.h index c46ff3fea1..2f935d53ab 100644 --- a/c/src/exec/score/cpu/m68k/m68k.h +++ b/c/src/exec/score/cpu/m68k/m68k.h @@ -76,8 +76,17 @@ extern "C" { * (cause an indeterminate result). The 68EC040 and 68LC040 do not * implement the DLE or multiplexed bus modes. The 68EC040 does not * implement the output buffer impedance selection mode of operation." + * + * M68K_HAS_EXTB_L is used to enable/disable usage of the extb.l instruction + * which is not available for 68000 or 68ec000 cores (68000, 68001, 68008, + * 68010, 68302, 68306, 68307). This instruction is available on the 68020 + * up and the cpu32 based models. + * + * NOTE: + * Eventually it would be nice to evaluate doing a lot of this section + * by having each model specigy which core it uses and then go from there. */ - + #if defined(m68000) #define CPU_MODEL_NAME "m68000" @@ -86,6 +95,7 @@ extern "C" { #define M68K_HAS_FPU 0 #define M68K_HAS_BFFFO 0 #define M68K_HAS_PREINDEXING 0 +#define M68K_HAS_EXTB_L 0 #elif defined(m68020) @@ -95,6 +105,7 @@ extern "C" { #define M68K_HAS_FPU 1 #define M68K_HAS_BFFFO 1 #define M68K_HAS_PREINDEXING 1 +#define M68K_HAS_EXTB_L 1 #elif defined(m68020_nofp) @@ -104,6 +115,7 @@ extern "C" { #define M68K_HAS_FPU 0 #define M68K_HAS_BFFFO 1 #define M68K_HAS_PREINDEXING 1 +#define M68K_HAS_EXTB_L 1 #elif defined(m68030) @@ -113,6 +125,7 @@ extern "C" { #define M68K_HAS_FPU 1 #define M68K_HAS_BFFFO 1 #define M68K_HAS_PREINDEXING 1 +#define M68K_HAS_EXTB_L 1 #elif defined(m68040) @@ -122,6 +135,7 @@ extern "C" { #define M68K_HAS_FPU 1 #define M68K_HAS_BFFFO 1 #define M68K_HAS_PREINDEXING 1 +#define M68K_HAS_EXTB_L 1 #elif defined(m68lc040) @@ -131,6 +145,7 @@ extern "C" { #define M68K_HAS_FPU 0 #define M68K_HAS_BFFFO 1 #define M68K_HAS_PREINDEXING 1 +#define M68K_HAS_EXTB_L 1 #elif defined(m68ec040) @@ -140,6 +155,7 @@ extern "C" { #define M68K_HAS_FPU 0 #define M68K_HAS_BFFFO 1 #define M68K_HAS_PREINDEXING 1 +#define M68K_HAS_EXTB_L 1 #elif defined(m68302) /* essentially a m68000 with onboard peripherals */ @@ -149,6 +165,7 @@ extern "C" { #define M68K_HAS_FPU 0 #define M68K_HAS_BFFFO 0 #define M68K_HAS_PREINDEXING 0 +#define M68K_HAS_EXTB_L 0 #elif defined(m68332) @@ -158,6 +175,7 @@ extern "C" { #define M68K_HAS_FPU 0 #define M68K_HAS_BFFFO 0 #define M68K_HAS_PREINDEXING 0 +#define M68K_HAS_EXTB_L 1 #elif defined(m68360) @@ -167,6 +185,7 @@ extern "C" { #define M68K_HAS_FPU 0 #define M68K_HAS_BFFFO 0 #define M68K_HAS_PREINDEXING 1 +#define M68K_HAS_EXTB_L 1 #else |