diff options
| author | Leon Alrae <leon.alrae@imgtec.com> | 2015-04-21 16:06:28 +0100 |
|---|---|---|
| committer | Leon Alrae <leon.alrae@imgtec.com> | 2015-06-11 10:13:28 +0100 |
| commit | 7c979afd11b09a16634699dd6344e3ba10c9677e (patch) | |
| tree | 2175a47d3d9f5a95406887a1b0e17c3c5c00b9d6 /target-mips/translate_init.c | |
| parent | eab9944c7801525737626fa45cddaf00932dd2c8 (diff) | |
target-mips: add Config5.FRE support allowing Status.FR=0 emulation
This relatively small architectural feature adds the following:
FIR.FREP: Read-only. If FREP=1, then Config5.FRE and Config5.UFE are
available.
Config5.FRE: When enabled all single-precision FP arithmetic instructions,
LWC1/LWXC1/MTC1, SWC1/SWXC1/MFC1 cause a Reserved Instructions
exception.
Config5.UFE: Allows user to write/read Config5.FRE using CTC1/CFC1
instructions.
Enable the feature in MIPS64R6-generic CPU.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Diffstat (limited to 'target-mips/translate_init.c')
| -rw-r--r-- | target-mips/translate_init.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c index 85a65e74b4..8e088c9195 100644 --- a/target-mips/translate_init.c +++ b/target-mips/translate_init.c @@ -622,7 +622,8 @@ static const mips_def_t mips_defs[] = (1 << CP0C3_BI) | (1 << CP0C3_ULRI) | (1U << CP0C3_M), .CP0_Config4 = MIPS_CONFIG4 | (0xfc << CP0C4_KScrExist) | (3 << CP0C4_IE) | (1 << CP0C4_M), - .CP0_Config5_rw_bitmask = (1 << CP0C5_SBRI), + .CP0_Config5_rw_bitmask = (1 << CP0C5_SBRI) | (1 << CP0C5_FRE) | + (1 << CP0C5_UFE), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, @@ -631,9 +632,9 @@ static const mips_def_t mips_defs[] = .CP0_PageGrain = (1 << CP0PG_IEC) | (1 << CP0PG_XIE) | (1U << CP0PG_RIE), .CP0_PageGrain_rw_bitmask = 0, - .CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | - (1 << FCR0_D) | (1 << FCR0_S) | (0x00 << FCR0_PRID) | - (0x0 << FCR0_REV), + .CP1_fcr0 = (1 << FCR0_FREP) | (1 << FCR0_F64) | (1 << FCR0_L) | + (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | + (0x00 << FCR0_PRID) | (0x0 << FCR0_REV), .SEGBITS = 42, /* The architectural limit is 59, but we have hardcoded 36 bit in some places... |